97 results on '"CONCEPT engineering"'
Search Results
2. New combination of methods for supporting a simplified set-based design approach.
- Author
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Ström, Mikael, Gustafsson, Göran, and Hans, Johannesson
- Subjects
AXIOMATIC design ,SYSTEMS design ,CONCEPTUAL design ,CONCEPT engineering ,EVALUATION - Abstract
This work presents a Set-Based Design inspired approach for generation, evaluation and reduction of a solution space of alternative product concepts. Also, the aspect of how to implement the process in an industrial environment was investigated. The hypothesis, confirmed by case studies, is that it can be done using existing methods like Enhanced functional modelling, brainwriting, the Gallery method, Axiomatic Design, causal diagrams and Pugh matrices. The method can be successfully introduced in a timeframe of a few working days and support development engineers in the concept design phase. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. UTILIZING THE EMBODIMENT FUNCTION RELATION AND TOLERANCE MODEL FOR ROBUST CONCEPT DESIGN.
- Author
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Li, Jiahang, Horber, Dennis, Keller, Christoph, Grauberger, Patric, Goetz, Stefan, Wartzack, Sandro, and Matthiesen, Sven
- Subjects
CONCEPTUAL design ,CONCEPT engineering ,ROBUST statistics ,TOLERATION ,IDENTIFICATION - Abstract
The early use of Robust Design (RD) supports the development of product concepts with low sensitivity to variation, which offers advantages for reducing the risk of costly iterations. Due to the lack of approaches for early evaluation of product robustness, the embodiment-function-relation and tolerance (EFRT-) model was developed, which combines the contact and channel approach and tolerance graphs. The information exchange of both approaches offers a high potential for reliable robustness evaluation results. However, that potential currently relies unused, since the link between applicable robustness criteria and the extended information is missing. To solve this problem, four research steps were determined: (1) understanding of robustness, (2) collection of RD principles, (3) identification of EFRT-model information and (4) mapping of RD principles and information. The results show nine adapted RD principles, the identified model information for the robustness evaluation, the evaluation criteria as well as their mapping. Utilizing the mapping and the proposed criteria in this contribution, a more comprehensive robustness evaluation in early stages is enabled. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
4. THE STUDY OF COGNITIVE DIFFERENCES BETWEEN DESIGNERS AND USERS BASED ON SCHEMA THEORY.
- Author
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Guo, Su, Fan, Shengxi, and Meng, Yichen
- Subjects
SCHEMA therapy ,DESIGN education ,CONCEPTUAL design ,CONCEPT engineering ,INDUSTRIAL designers - Abstract
This study is grounded upon the cognitive process and knowledge representation, analyzes the differences in perceptions between designers and users by applying schema theory. Per design process, we disassembled the semantic words that represent the design concept, and re-construct the representative visual imagery library. We experimented the imagery library with selective designers and users, and through their selections of the images, we uncovered: 1. The differences largely exist in concept interpretation and imagery selection between designers and users, which has strong relationship with their different schema; 2. The experiment revealed the fact that designers are inclined to understand the concept by disassembling the elements, and have obvious tendency of professionalism, while users' interpretation prefers complete forms and life-oriented; 3. As compared with users, designers relatively prefer brand-new, creative elements in selecting visualized representation. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
5. LET ME FINISH MY THOUGHT: PROCESS INTERVENTIONS TO CHANGE TEAM BEHAVIOR DURING REMOTE DESIGN COLLABORATION.
- Author
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Domingo, Lawrence, Leifer, Larry, and Auernhammer, Jan
- Subjects
CONCEPTUAL design ,HUMAN-computer interaction ,COMMUNICATION ,TEAMS ,CONCEPT engineering ,GESTURE - Abstract
This research investigates changes in team behavior and communication through interruptions and gestures, due to design process strategies in pre-formed remote teams for conceptual design tasks. Understanding creative remote team behavior is important due to the increase of remote communication in knowledge work. Teams were given a creative or analytical condition intervention to facilitate their conceptual design team process. The research contributes to the human-computing interaction literature by characterizing changes in distributed team behavior due to process method interventions. The creative condition exhibited a decrease in interruptions. The analytical condition exhibited a decrease in gestures and an increase in problem characterization at the cost of ideation discussion. Remote team members can better gauge which meetings or work tasks are best to be done in person or remotely by gauging not just the task but also the team behavior. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. FUNCTION INTEGRATION IN ADDITIVE MANUFACTURING: A REVIEW OF APPROACHES.
- Author
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Tüzün, Gregory-Jamie, Roth, Daniel, and Kreimeyer, Matthias
- Subjects
THREE-dimensional printing ,PRODUCT design ,CONCEPTUAL design ,CONCEPT engineering ,RAPID prototyping - Abstract
This paper provides an overview of established approaches for function integration in additive manufacturing and critically compares their capabilities. One of the decisive factors is how functions and structures are addressed. This is necessary because function integration - among many others - affects material decisions and the manufacturing process chain. It is one of many reasons to rethink the product architecture and a way to support the design of resource-efficient products. Various strategies for function integration exist. However, there are currently no approaches in additive manufacturing that provide systematic support for early function integration. A systematic literature review identified 21 unique approaches. All approaches were categorized according to their abstraction level within a product architecture and their design type to be supported. They were then compared on the basis of their categorization, design objective and strategy for function integration to allow for a better understanding of when to use the approaches in research and practice. Key findings and considerations for adapting function integration approaches to early design stages are presented. In addition, several research gaps were identified. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
7. DEVELOPMENT OF A DESIGN SUPPORT TOOL FOR SYNTHESISING MULTI-STATE MECHANICAL DEVICE CONCEPTS.
- Author
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Majumder, Anubhab and Chakrabarti, Amaresh
- Subjects
PRODUCT quality ,CONCEPTUAL design ,CONCEPT engineering ,PRODUCT design ,SYSTEMS design - Abstract
Conceptual design synthesis, which focuses on generating solution alternatives, has a significant impact on the cost and quality of the final product. The development of radically new and significantly better solutions requires the generation and exploration of a large solution space. This work deals with the conceptual design synthesis of multi-state mechanical devices (MSMD). A scheme for representing a MSMD design task is described. Empirical studies have been carried out to develop a common understanding of the MSMD design synthesis process and use this knowledge for developing a prescriptive model. In order to support the effective and efficient use of the proposed prescriptive model, a web-based computational tool is developed. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
8. Harnessing the Complexity for Vehicle System Design at the Concept Design Phase of an Aircraft.
- Author
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Drego, A. D.
- Subjects
AIRCRAFT industry ,VEHICLES ,ARCHITECTURE ,CONCEPTUAL design ,CONCEPT engineering - Abstract
Aircraft vehicle systems enable an aircraft to fly safely throughout a mission. Generating feasible vehicle system architectures at the aircraft concept design phase is complex. Aspects from various complex systems theories are used to provide different insights into this complexity. To address this complexity, a framework based on industrial reality that can used recursively is presented. The framework employs various design theories to harness the complexity of vehicle system design at the concept design phase of an aircraft. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
9. Influences and Effects on Scaling the Pressure Stiffness of Additively Manufactured Meso Structures.
- Author
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Schulte, F., Sauerzapf, L., and Kirchner, E.
- Subjects
TRIATHLON ,CONCEPTUAL design ,CONCEPT engineering ,FIBERS ,THREE-dimensional printing - Abstract
AM-meso structures offer a high potential for adapted properties combined with lightweight design. To utilize the potential a purposeful design of the meso structures is required. Therefore, this contribution presents an approach for modelling their properties depending on design parameters by scaling relationships. The relationships are investigated based on grey box and axiomatic models of elementary cells. Exemplary the pressure stiffness is determined using FEM in comparison to an analytical approximation. The comparison reveals effects and influences occurring within the elementary cell. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
10. Rethinking System Boundaries for Better Utilisation of Additive Manufacturing Potentials - A Case Study.
- Author
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Schmitt, P. F., Schnödewind, L., and Gericke, K.
- Subjects
THREE-dimensional printing ,TRIATHLON ,CONCEPTUAL design ,CONCEPT engineering ,FIBERS - Abstract
The potentials of additive manufacturing for objectives such as lightweight construction are not yet fully exploited. In this paper, the possibilities of integrative function and system modelling for this challenge will be discussed. In a design study, a triathlon trailer is designed considering the constraints of AM. A suitable system boundary is to be detected using the one-part device method. The findings of the study will help to understand in which form methods such as functional modelling can be applied or adapted for the application of additive manufacturing. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
11. Statistical Analysis of an Adaptive Concept Inventory in Introductory Electric Circuits for Students and Instructors.
- Author
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Espera, Alejandro H. and Pitterson, Nicole P.
- Subjects
- *
ELECTRIC circuit design & construction , *ELECTRICAL engineering education , *CONCEPT engineering , *RELIABILITY in engineering , *EDUCATION research - Abstract
Concept assessment instruments utilized in electrical engineering education are primarily designed for students by teaching faculty or assessors of the course. Due to the need for identifying inaccurate understanding early at the introductory level, creating a concept inventory that assesses not just students for their knowledge in fundamental electric circuits but also helps novice teaching faculty identify potential inaccuracies in their assumed correct conceptual understanding. This adaptive mechanism is deemed useful for teaching fundamental concepts effectively. Forty-four undergraduate students and teaching faculty from four academic institutions participated in this study. The collected data were analyzed through descriptive and inferential statistical approaches: item-wise difficulty and discriminatory analysis, inter-item correlations, internal consistency reliability using Kuder-Richardson 20 (KR-20) metric, and exploratory factor analysis. Initial findings from the analysis suggested that the instrument attained acceptable validity, yet its reliability could be further improved. The only significant predictor of the scores was the type of participant (faculty or student). In due course, the outcomes of this study will identify which of the test items significantly contribute to achieving the learning of the instrument's electric circuit concept groups and which of the items need to be improved and supplemented. The set of statistical methods selected for this study offers promising means to enhance concept inventories and make them valid and usable for improving the teaching of fundamentals of electric circuits. [ABSTRACT FROM AUTHOR]
- Published
- 2022
12. Concept Development—From Academia to Industry: A Journey Motivated by the Design of Portable Thermal Slippers.
- Author
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Duarte, Belmiro P. M., Carvalho, Ana M. F., Lima, Daniela S. B., Costa, Diana I. S., Nunes, Inês R., Batista, João P. S. C., Gomes, Paulo J. S., and Bernardo, Fernando P.
- Subjects
ECONOMIC uncertainty ,FOOTWEAR industry ,NEW product development ,DECISION making ,TEAMS in the workplace - Abstract
Concept design is an early and crucial phase in product development where the general concept of a product is created. In this stage, various aspects of the product are considered, such as usability and technical performance, among others. Product design and development are currently a well-established area of knowledge, and academia is increasingly including its fundamentals in regular curricula, especially in the areas of engineering, design, and marketing. At the same time, industrial players recognize the potential of the method for i. responding successfully to market uncertainty and speed; ii. improving the knowledge available and the systematization of creative processes; and iii. ensuring that the decision process is explicit and well documented. Nevertheless, only a few studies demonstrating the concept design procedure in detail are available in the literature. In this paper, we thus present a detailed case study concerning the design of portable thermal slippers, so as to demonstrate the application of structured procedures and systematic approaches to concept design, and providing a pedagogical review of methods and tools to support the analysis and decisions along the several steps of the concept design procedure. The particular case study here addressed resulted from the collaboration between an academic institution and a company operating in the home footwear industry, with the design team including elements from both sides. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
13. A computational approach for the optimal conceptual design synthesis based on the distributed resource environment.
- Author
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Chen, Bin and Xie, Youbai
- Subjects
CONCEPTUAL design ,CONCEPT engineering ,PRODUCT design ,NEW product development ,ALGORITHMS ,REFUSE as fuel - Abstract
Optimal conceptual design synthesis is the very starting and key phase in the product design. Its result is the optimal alternative in the solution space, and will be further completed and improved into the final product design scheme in the next detailed design works. With the progress of the Internet technology, a large number of design resources actually construct an increasingly growing distributed resource environment. If these rich resources can be fully introduced into the optimal conceptual design synthesis, the design efficiency and product innovation will be promoted largely. Therefore, a computational approach was proposed for the optimal conceptual design synthesis based on the distributed resource environment. In this approach, the distributed resource environment is modelled as a set of numerous functional units (FUs), and the optimal conceptual design synthesis is concluded into a process of generating the optimal objective FU chain. Here, the main workload is completed by a proposed computer algorithm. To prove the feasibility of this approach, a computer programme called Optimal Conceptual Design Synthesis System (OCDSS) was established. A garbage-powered lighting system was designed with OCDSS as an illustration. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
- Full Text
- View/download PDF
14. Concept Development—From Academia to Industry: A Journey Motivated by the Design of Portable Thermal Slippers
- Author
-
Belmiro P. M. Duarte, Ana M. F. Carvalho, Daniela S. B. Lima, Diana I. S. Costa, Inês R. Nunes, João P. S. C. Batista, Paulo J. S. Gomes, and Fernando P. Bernardo
- Subjects
concept design ,concept engineering ,product development ,footwear industry ,thermal slippers ,Technology ,Engineering design ,TA174 - Abstract
Concept design is an early and crucial phase in product development where the general concept of a product is created. In this stage, various aspects of the product are considered, such as usability and technical performance, among others. Product design and development are currently a well-established area of knowledge, and academia is increasingly including its fundamentals in regular curricula, especially in the areas of engineering, design, and marketing. At the same time, industrial players recognize the potential of the method for i. responding successfully to market uncertainty and speed; ii. improving the knowledge available and the systematization of creative processes; and iii. ensuring that the decision process is explicit and well documented. Nevertheless, only a few studies demonstrating the concept design procedure in detail are available in the literature. In this paper, we thus present a detailed case study concerning the design of portable thermal slippers, so as to demonstrate the application of structured procedures and systematic approaches to concept design, and providing a pedagogical review of methods and tools to support the analysis and decisions along the several steps of the concept design procedure. The particular case study here addressed resulted from the collaboration between an academic institution and a company operating in the home footwear industry, with the design team including elements from both sides.
- Published
- 2022
- Full Text
- View/download PDF
15. Choosing Values? Williams Contra Nietzsche.
- Author
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Queloz, Matthieu
- Subjects
- *
CONCEPTUAL design , *CONCEPT engineering - Abstract
Amplifying Bernard Williams' critique of the Nietzschean project of a revaluation of values, this paper mounts a critique of the idea that whether values will help us to live can serve as a criterion for choosing which values to live by. I explore why it might not serve as a criterion and highlight a number of further difficulties faced by the Nietzschean project. I then come to Nietzsche's defence, arguing that if we distinguish valuations from values, there is at least one form of the project which overcomes those difficulties. Finally, however, I show that even on this reading, the project must either fall prey to 'Saint-Just's illusion' or fall back into the problems it was supposed to escape. This highlights important difficulties faced by the Nietzschean project and its descendants while also explaining why Williams, who was so Nietzschean in other respects, remained wary of the revaluation of values as a project. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
16. Design for Action.
- Author
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Brown, Tim and Martin, Roger
- Subjects
ORGANIZATIONAL change ,DESIGN ,BUSINESS models ,INDUSTRIAL management ,STAKEHOLDER theory ,CONCEPT engineering - Abstract
Ever since it became clear that smart design led to the success of many products, companies have been employing it in other areas, from customer experiences, to strategy, to business ecosystems. But as design is used in increasingly complex contexts, a new hurdle has emerged: gaining acceptance of the “designed artifact” into the status quo. In fact, the more innovative a new design is, the more resistance it’s likely to meet. The solution, say the CEO of IDEO and the Rotman School’s former dean, is to also apply design thinking to the introduction of the innovation itself. This process, intervention design, grew organically out of the iterative prototyping that designers did to help understand customers’ reactions to new products. Not only did iterative prototyping create better offerings, but it was a great way to get organizational funding and commitment, because it improved the chances of success and reduced fear of the unknown. Intervention design uses iterative prototyping to get buy-in too, but extends it to interactions with all the principal stakeholders—not just customers. When Intercorp Group devised a revolutionary concept for Peru’s schools, it needed to win acceptance for corporate-run education and for a very different role for teachers. Thanks to intervention design, it now has 29 schools in operation and is rapidly growing. INSETS: Idea in Brief.;The Launch Is Just One Step in the Process.. [ABSTRACT FROM AUTHOR]
- Published
- 2015
17. Early prediction of reliability and availability of combined hardware-software systems based on functional failures.
- Author
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Sinha, Sourav, Kumar Goyal, Neeraj, and Mall, Rajib
- Subjects
- *
COMPUTER reliability , *SOFTWARE reliability , *SOFTWARE failures , *CONCEPTUAL design , *CONCEPT engineering - Abstract
Abstract Interactions among software and hardware components play an important role in successful operation of a system. Researchers have identified two types of interaction failures: software failure influenced by hardware breakdown (hardware-driven software failure) and hardware failure influenced by software malfunction (software-driven hardware failure). The existing research in this domain either has not considered the entire spectrum of interaction failures or limited their work to mere failure analysis rather than reliability/availability modeling. In this paper, we are proposing a unified model to predict the worst case achievable reliability/availability of hardware-software combined system at early design phases. The proposed model identifies system functions from the requirements specification document. Then, these functions are mapped to corresponding conceptual design components. Subsequently, the functional design is simulated for sets of input data that have been randomly generated for different operation modes (failure/working) of the components. We also simulate system state transition due to the component operation modes. Finally, reliability and availability is predicted from simulation results. In this context, we address four important aspects: i) proposing a conceptual design based early reliability/availability prediction model, ii) apart from individual hardware-software component failure, the proposed model addresses different interaction failures such as, hardware-driven software and software-driven hardware failures, iii) implementing the proposed model through a case study, and iv) validating the model by comparing the obtained reliability/availability value using the proposed approach with an established method. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
18. Conceptual design synthesis based on series-parallel functional unit structure.
- Author
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Chen, Bin
- Subjects
- *
CONCEPTUAL design , *COMPUTER programming , *MECHANICAL abrasion , *FRICTION , *CONCEPT engineering - Abstract
Conceptual design synthesis is the core and starting phase of the design process. During this phase, the designers should deal with a large number of design resources to construct conceptual systems which meet the functional requirement. Therefore, a conceptual design synthesis approach based on series-parallel function unit structure is proposed as an assistant tool for the designers. This approach can help the designers completing the conceptual design synthesis of simple design missions or elementary functional modules of complex design missions with series-parallel-structured synthesis results. A corresponding computer programme is established as an implementation, and the conceptual design synthesis of the mechanical part of a friction-abrasion testing machine is completed with this programme to prove the practicability of this proposed approach. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
19. ConceptVector: Text Visual Analytics via Interactive Lexicon Building Using Word Embedding.
- Author
-
Park, Deokgun, Kim, Seungyeon, Lee, Jurim, Choo, Jaegul, Diakopoulos, Nicholas, and Elmqvist, Niklas
- Subjects
VISUAL analytics ,LEXICON ,CONCEPT engineering ,SEMANTIC networks (Information theory) ,QUANTITATIVE research - Abstract
Central to many text analysis methods is the notion of a concept: a set of semantically related keywords characterizing a specific object, phenomenon, or theme. Advances in word embedding allow building a concept from a small set of seed terms. However, naive application of such techniques may result in false positive errors because of the polysemy of natural language. To mitigate this problem, we present a visual analytics system called ConceptVector that guides a user in building such concepts and then using them to analyze documents. Document-analysis case studies with real-world datasets demonstrate the fine-grained analysis provided by ConceptVector. To support the elaborate modeling of concepts, we introduce a bipolar concept model and support for specifying irrelevant words. We validate the interactive lexicon building interface by a user study and expert reviews. Quantitative evaluation shows that the bipolar lexicon generated with our methods is comparable to human-generated ones. [ABSTRACT FROM PUBLISHER]
- Published
- 2018
- Full Text
- View/download PDF
20. Propuesta de diseño del proceso de obtención de CBD a partir de la planta de cannabis Charlotte’s Angel
- Author
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Mesa Gómez, Adriana María, Soler Ramírez, David Alejandro, Mesa Gómez, Adriana María, and Soler Ramírez, David Alejandro
- Abstract
Este trabajo desarrolla como objetivo principal la propuesta de diseño del proceso de obtención de CBD a partir de la planta de cannabis Charlotte ́s Angel. Previamente; con el análisis de los diferentes métodos de extracción planteados en este trabajo, se realizó la selección del método de extracción con disolventes y se desarrolló la propuesta de ingeniería conceptual. El análisis de los métodos de extracción sirvió para corroborar que las condiciones de operación varían según el método y el compuesto de interés, es importante mencionar que en todos los estudios se tiene en cuenta la afectación al medio ambiente.
- Published
- 2022
21. Proposing an ex-ante framework for the emergence of a dominant design: the case of electronic displays.
- Author
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Inhwan Yoon, Yoongun Min, Myeong Yong Lee, and Heesang Lee
- Subjects
INFORMATION display systems ,CONCEPT engineering ,CONCEPTUAL design ,NEXT generation networks ,DELPHI method - Abstract
This paper uses a dominant design concept to explore the characteristics of a next-generation electronic display and proposes an ex-ante framework for identifying the determinants of its appearance. To ensure validity and reliability, we employ multiple methods, including in-depth interview and the Delphi method, with the participation of display experts. The results indicate that organic light-emitting diode (OLED) displays are more likely to become a mainstay in next-generation displays. The findings also highlight the importance of rapid technological innovation toward future displays and cost leadership to secure market share. We suggest an ex-ante framework to complement the existing literature and provide practical implications to establish a competition strategy. [ABSTRACT FROM AUTHOR]
- Published
- 2016
22. Comparing novelty of designs from biological-inspiration with those from brainstorming.
- Author
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Keshwani, Sonal, Lenau, Torben Anker, Ahmed-Kristensen, Saeema, and Chakrabarti, Amaresh
- Subjects
- *
CONCEPTUAL design , *CONCEPT engineering , *ENGINEERING design , *BIOMIMETIC chemicals , *INDUSTRIAL engineering - Abstract
This research aims to understand the significance of biological-analogies in fostering novelty by comparing biological-analogies with other design methods for idea generation. Among other design methods, brainstorming was chosen here as benchmark. Four studies were conducted to compare: (i) the levels of abstraction at which concepts were ideated using biological inspiration (represented using biocards) with that using traditional brainstorming; and (ii) the novelty of concepts produced by using these two design methods. Concepts produced in these studies were evaluated for levels of abstraction at which they were ideated, average novelty, and proportion of high-novelty concepts. Results suggest that concepts generated using biocards were ideated at higher abstraction levels than those using brainstorming, but neither were at the highest abstraction levels. The average novelty of concepts produced using biocards was found to be greater than that using brainstorming; however, no statistically significant difference was found in the proportion of high-novelty concepts. We suspect the lack of biological knowledge and cultural difference among the subjects involved in our studies as the two reasons behind the results. The results demonstrate that the design methods substantially influence the novelty of concepts generated, while indicating the need for better training in effective use of biological-analogies. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
23. Categorizing biological information based on function–morphology for bioinspired conceptual design.
- Author
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Ghanem, Roger, Du, Xiaoping, Lee, Sooyeon, McAdams, Daniel A., and Morris, Elissa
- Subjects
- *
CONCEPTUAL design , *CONCEPT engineering , *ENGINEERING design , *MACHINE design , *ALGORITHMS - Abstract
A function-based keyword search is a concept generation methodology studied in the bioinspired design area that conveys textual biological inspiration for engineering design. Current keyword search methods are inefficient primarily due to the knowledge gap between engineering and biology domains. To improve current keyword search methods, we propose an algorithm that extracts and organizes morphology-based solutions from biological text. WordNet is utilized to discover morphological solutions in biological text. The novel algorithm also adapts latent semantic analysis and the expectation–maximization algorithm to categorize morphological solutions and group biological text. We introduce a novel penalty function that reflects the distance between functions (problems) and morphologies (solutions). The penalty function allows the algorithm to extract morphological solutions directly related to a design problem. We compare the output of the algorithm to manually extracted solutions for validation. A case study is included to exemplify the utility of the developed algorithm. Upon implementation of the algorithm, engineering designers can discover innovative solutions in biological text in a straightforward, efficient manner. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
- Full Text
- View/download PDF
24. Designing techniques for systemic impact: lessons from C-K theory and matroid structures.
- Author
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Le Masson, Pascal, Hatchuel, Armand, Kokshagina, Olga, and Weil, Benoit
- Subjects
- *
CONCEPT engineering , *MATROIDS , *STRUCTURAL engineering , *ENGINEERING design , *TECHNOLOGICAL innovations - Abstract
As underlined in Arthur's book 'the nature of technology', we are very knowledgeable on the design of objects, services or technical systems, but we don't know much on the dynamics of technologies. Still contemporary innovation often consists in designing techniques with systemic impact. They are pervasive-both invasive and perturbing-and they recompose the family of techniques. Can we model the impact and the design of such techniques? More specifically: how can one design generic technology, i.e. a single technology that provokes a complete reordering of families of techniques? Advances in design theories open new possibilities to answer these questions. In this paper, we use C-K design theory and a matroid-based model of the set of techniques to propose a new model (C-K/Ma) of the dynamics of techniques, accounting for the design of generic technologies. We show that: (1) C-K/Ma accounts for basic phenomena in the design of pervasive (and non-pervasive) techniques, in particular for generic techniques. (2) C-K/Ma, when applied iteratively, helps to propose new laws for the dynamics of techniques and helps to build strategic alternatives in the design of techniques. Moreover, C-K/Ma contributes to design theory since it provides some basic quantifiers and operations that could lead to a computational model of the process of designing techniques with systemic impact. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
25. A site-specific traffic load model for long-span multi-pylon cable-stayed bridges.
- Author
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Ruan, Xin, Zhou, Junyong, Shi, Xuefei, and Caprani, Colin C.
- Subjects
- *
TRAFFIC engineering , *CABLE-stayed bridge design & construction , *BRIDGE design & construction , *CONCEPTUAL design , *CONCEPT engineering , *INFRASTRUCTURE (Economics) - Abstract
This paper proposes a site-specific traffic load model for long-span multi-pylon cable-stayed bridge. Structural effects are primarily investigated based on influence lines, which are identified as either global effect (GE) or partial effect (PE) depending on the effective influenced region. GEs are further categorised as sensitive effect (SE), insensitive effect (ISE) or less sensitive effect (LSE), considering sensitivity to unbalanced traffic loading. Three on-bridge traffic states are simulated, and Weibull extrapolations are utilised to predict the extreme responses. These responses are analysed and compared with several design codes. Results indicate the maximum response is only 75% of the value calculated based on the design code of China (D60), and even lower than other codes. The responses show strong positive correlation with traffic parameters of annual average daily traffic volume and heavy vehicle proportion, and the on-bridge traffic states have significant influence on the responses. Further, the identified effects of ISE, SE and LSE present different responses, which indicate specific load models are needed accordingly. Finally, a site-specific traffic load model consisting of load form, loading pattern, multi-lane factor and load value is recommended, which gives an accurate illustration on the structural effects and traffic responses. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
- Full Text
- View/download PDF
26. Conceptual design of bridges.
- Author
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Tang, Man-Chung
- Subjects
- *
BRIDGE design & construction , *CONCEPTUAL design , *CONCEPT engineering , *STRUCTURAL engineering , *INFRASTRUCTURE (Economics) - Abstract
The design process of a bridge can be divided into four basic stages: conceptual design, preliminary design, detailed design and construction design. The purpose of the conceptual design is to come up with various feasible bridge schemes and to decide on one or more final concepts for further consideration. The purpose of the preliminary design is to select the best scheme from these proposed concepts and then to ascertain the feasibility of the selected concept and finally to refine its cost estimates. The purpose of the detailed design is to finalise all the details of the bridge structure so that the document is sufficient for tendering and construction. Finally, the purpose of the construction design is to provide step-by-step procedures for the building of the bridge. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
- Full Text
- View/download PDF
27. Recent trends of new product development and production management in Japanese electronics industries
- Author
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Itoh, Toshio, Okino, Norio, editor, Tamura, Hiroyuki, editor, and Fujii, Susumu, editor
- Published
- 1998
- Full Text
- View/download PDF
28. Operational Challenges for Biosimilar Studies.
- Author
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Gorham, Hazel and Challand, Rodeina
- Subjects
- *
SIMILARITY (Physics) , *BIOLOGICAL research , *THEORY of knowledge , *CONCEPT engineering , *REGULATORY approval , *GOVERNMENT policy - Abstract
The article discusses on the operational challenges faced by biosimilar development. Topics mentioned include the specific regulatory requirements, the lack of understanding on the biosimilarity concept among patients and physicians, and the difficulty in obtaining certificate of analysis (CoA) for commercial reference product supplies.
- Published
- 2016
29. Conceptual Design of Wireless DAQ System for Vehicle Blast Testing.
- Author
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Zuraida, A.B. Zurin, Fairuz, S.D. Syed, and Risby, M.S.
- Subjects
CONCEPTUAL design ,CONCEPT engineering ,ARMORED vehicles ,DATA acquisition systems ,INFORMATION storage & retrieval systems - Abstract
In modern warfare, anti-vehicular mine attack is a critical parameter in the design of an armored personnel vehicle. In order to acquire vital engineering data such as shock, load and pressure of these vehicles under extreme condition, a suitable data acquisition system (DAQ) is required. Conventional wired transmission provides a secure and faster connectivity but is limited in its operation distance and creates unwanted noise. Wireless transmission offers greater flexibility and robustness whereby data can be transmitted and received at equivalent high speed rate as offered in conventional wired transmission. In this paper, a conceptual design of wireless DAQ system is proposed for blast testing in accordance to NATO AEP-55 Procedure. The Wi-Fi with IEEE 802.11n protocol was employed along with a selection of sensors, instrumentation hardware and instrumented anthropometric test dummy (ATD) in order to suit to the test requirements. The challenge here is to design a wireless system which will acquire the data remotely prior to signal conditioning and in real-time. Although real-time DAQ strategies have been adequately explored, challenges of implementing a cost effective higher throughput of data that matched with specific requirements of the sensors within very tight timing window still remain due to the reliability issue related to the wireless approach. The conceptual design can be a useful reference in future development of a cost efficient measurement tools for evaluating the protection level of armored vehicles. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
30. System Code Analysis of HELIAS-Type Fusion Reactor and Economic Comparison With Tokamaks.
- Author
-
Warmer, F., Torrisi, S. B., Beidler, C. D., Dinklage, A., Feng, Y., Geiger, J., Schauer, F., Turkin, Y., Wolf, R., Xanthopoulos, P., Kemp, R., Knight, P., Lux, H., and Ward, D.
- Subjects
- *
FUSION reactors , *TOKAMAKS , *STELLARATORS , *CONCEPTUAL design , *CONCEPT engineering - Abstract
System codes are commonly employed for the analysis and conceptual design of fusion reactors. For the helical-axis advanced stellarator (HELIAS) line, a new set of system code models have been developed to account for the stellarator-specific 3-D aspects. The models have recently been implemented in the systems code PROCESS and verified with respect to different test cases. After having established confidence in the stellarator models, system studies were carried out for the five-field-period HELIAS case to define the accessible reactor design window. In the multidimensional physics and engineering parameter space, sensitivity studies are carried out for the reactor regime to ascertain tradeoffs between different parameters and costs. Exemplary design points are analyzed in more detail using the plasma operation contour approach, which, for example, can be used to determine the optimum start-up path to ignition. Finally, with a common set of nondevice-specific models, the PROCESS framework allows a direct comparison of tokamaks and stellarators. Although the five-period HELIAS is a larger machine in terms of major radius, the required mass for both concepts is comparable leading to similar construction costs. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
31. A Systems Design Exploration Approach that Illuminates Tradespaces Using Statistical Experimental Designs.
- Author
-
MacCalman, Alex D., Beery, Paul T., and Paulo, Eugene P.
- Subjects
- *
COMPUTER simulation , *CONCEPTUAL design , *CONCEPT engineering , *SURROGATE-based optimization , *SIMULATION methods & models - Abstract
ABSTRACT This paper describes an approach that leverages computer simulation models and statistical experimental designs for exploration studies during the early conceptual design of a system. We apply the approach to a naval ship design problem and demonstrate how we can illuminate trade decisions among multiple design decisions and evaluation measures using a dynamic dashboard. After performing experimental designs on a collection of simulation models, we can fit statistical models that act as surrogates to these simulations. These surrogate models allow us to explore a wider variety of system alternatives rather than fixating on a narrow set of alternatives. The purpose of the approach is to simultaneously explore the operational and physical domains using statistical surrogate models in order to illuminate trade decisions between the system's operational effectiveness and physical design considerations. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
32. Conceptual design of sleeve rotor synchronous reluctance motor for traction applications.
- Author
-
Reddy, Patel Bhageerath, Grace, Kevin, and El-Refaie, Ayman
- Subjects
- *
BRUSHLESS electric motors , *MAGNETIC reluctance generators , *SYNCHRONOUS electric motors , *CONCEPT engineering , *RELUCTANCE motors - Abstract
Synchronous reluctance machines are very appealing for high speed traction motor design due to their robustness, simple structure, absence of magnets, and simple control. The absence of magnets means that synchronous reluctance (SynRel) machines are not susceptible to price variability and sustainability of rare-earth materials. Moreover, there are no concerns about demagnetisation or uncontrolled generation mode. However, the challenge of achieving a good constant power to speed ratio is dependent on the mechanical aspects of the design. Conventional SynRel designs perform poorly compared with the permanent magnet machines due to the presence of bridges and/or centre posts in absence of the magnets to help saturate these regions. In this case, the challenge of rotor mechanical retention is addressed with the help of a sleeve on the rotor to reduce the need for bridges and/or centre posts. Design optimisation including the mechanical aspects of the sleeve is presented in this study. The final design with a sleeve will be shown to be superior to a conventional design in terms of power density, rotor losses, saliency and torque ripple. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
33. A Multicriteria Decision-Making Application to the Conceptual Design of Mechanical Components.
- Author
-
Renzi, Cristina and Leali, Francesco
- Subjects
CONCEPTUAL design ,DECISION making ,CONCEPT engineering ,PARTICLE swarm optimization ,ALGORITHMS - Abstract
Early design is crucial for the success of the final product. In the conceptual design phase, several constraints, criteria, objectives and disciplines have to be considered. To this aim, multidisciplinary optimization has proven effective for the solution of engineering design problems, even in the industrial every-day practice, to improve and simplify the work of designers in a successful quest of the best compromise solution. In this paper, a multicriteria decision-making (MCDM)-based design platform for early optimal design of industrial components is proposed. In a group decision-making context, the selection of the most suitable component among several possible layouts is performed by means of a group Fuzzy Technique for Order of Preference by Similarity to Ideal Solution approach. Hence, a multi-objective optimization is performed on the selected component by applying a multi-objective particle swarm optimization for finding optimal component dimensions. An industrial case study is presented for showing the efficiency of the multicriteria decision-making-based design platform, regarding an innovative and low-cost solution to increase the duration of heel tips in women's shoes. Copyright © 2016 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
34. Integration Analysis of Conceptual Design and Stealth-Aerodynamic Characteristics of Combat Aircraft.
- Author
-
Cheng Liangliang, Yue Kuizhi, Guo Weigang, and Yu Dazhao
- Subjects
- *
GEOMETRICAL optics , *CONCEPT engineering - Abstract
In order to study stealth strike-fighter, an analysis on stealth-aerodynamic integration and conceptual design is conducted. A conceptual 3-D digital model with internal antiship missiles and air-to-air missiles is designed in CATIA software. Based on the physical optics and equivalent electromagnetic current methods, using the self-programmed RCSAnsys software, the Radar Cross Section (RCS) characteristics and characteristics of scattering intensity distribution of the model are numerically simulated. Based on the turbulence theory of standard k-ε equations, using Fluent software, the pressure, velocity and lift-to-drag characteristics of the conceptual aircraft are numerically simulated. The simulation results show that the stealth and aerodynamic characteristics of the conceptual aircraft can be designed through integration analysis process, which can provide technical support to the design of the advanced operational aircrafts. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
35. Current state and prospects of manufacturing and operation of methane-based fuel cells (review).
- Author
-
Ponomareva, A., Ivanova, A., Shilova, O., and Kruchinina, I.
- Subjects
- *
METHANE as fuel , *ELECTROCHEMISTRY , *FUEL cells , *CONCEPT engineering - Abstract
This paper is a review of the current state of the problem of the development and manufacturing of fuel cells (FCs). The technical features of FCs that are promising for the use of methane as a fuel are considered. The physico-chemical characteristics of the materials for the basic FC components applicable for the use of methane are analyzed. In this review, information on the FCs developed, their electrophysical characteristics, and production technologies is presented. The basic problems that occur during the operation of FCs are described. Promising trends for the development of methane-based FCs are discussed and evaluated. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
36. Comparison of Questioning-based and Reasoning-based Design Approaches.
- Author
-
Ang Liu and Lu, Stephen Y.
- Subjects
- *
CONCEPTUAL design , *CONCEPT engineering , *NEW product development , *ENGINEERING design , *ENGINEERING - Abstract
The article introduces two conceptual design methods for engineering, extraordinary breakthrough thinking (EBT) and innovative design thinking (IDT). It cites that EBT is an empirical approach that guides the designers to carry out conceptual design by means of asking a set of smart questions in a particular sequence. It notes that IDT adopts the principles in logic to guide the designers to follow a systemic reasoning process to accomplish conceptual design.
- Published
- 2014
37. Calder Road.
- Author
-
CAMPBELL, BILL
- Subjects
BUILDINGS & structures for model railroads ,MODEL railroad design & construction ,LOCOMOTIVE models -- Design & construction ,VEHICLE models ,CONCEPT engineering - Abstract
The article discusses the concept of the Calder Road layout as the setting for the East Kilbride MRC OO gauge locomotive model in Central Scotland. Information about the composition and detailed models of the concept for the modern railway model, is provided. Also emphasized is the geographical setting of the layout as well as its location and passenger station.
- Published
- 2017
38. ECO-EVALUATION IN CONCEPTUAL DESIGN PHASE -- A CASE STUDY.
- Author
-
Midžić, Ida, Štorga, Mario, and Marjanović, Dorian
- Subjects
- *
CONCEPTUAL design , *CONCEPT engineering , *MECHANICAL engineers , *MATHEMATICAL variables , *GUIDELINES - Abstract
The use of qualitative eco-evaluation methods for product concept eco-evaluation is explored in a case study where mechanical engineers performed an eco-evaluation of product concepts in a two-stage evaluation process. In the first stage of the case study, the evaluators were asked to evaluate the environmental friendliness of the product concepts and to rank the concepts accordingly. The obtained rankings were based upon subjective preferences of the evaluators and their subjective interpretation of the eco-value of the considered concepts. In the second stage of the case study, the evaluators eco-evaluated the same concepts, but this time they used ecodesign guidelines as eco-criteria. The evaluators have obtained different rankings of the concepts, so the results of the two sets of rankings are compared. Findings are analysed in the context of confounding variables of the case study design. [ABSTRACT FROM AUTHOR]
- Published
- 2015
39. Conceptual design of nano-robotics for carrying the radioisotope material in nuclear industry.
- Author
-
Cho, Hyo Sung and Woo, Tae Ho
- Subjects
- *
NUCLEAR fuel manufacturing , *CONCEPT engineering , *AUTOMATION , *NUCLEAR energy , *MACHINE theory - Abstract
Nano-robotics is introduced for the nuclear industry for radiation treatment as a complete cure of cancer because it leads to the removal of cancerous cells. In order to ensure the reliability of treatment, one needs to control the radiation behavior of the therapy. The omni-directional cancer treatment program (OCTP) is suggested for the therapy planning in which all cancerous cells are killed without damage to normal cells. This is one of the most important issues in the conventional radiation therapy planning. The clinical cancer therapy planning is performed by nanorobots. The tiny machine treats the cancer cells effectively. The collision event occurs approximately over 35 nm. Therefore, if the diameter of tumor is 1 cm, the curable length is about 5 nm. Thus, one movement of nanorobot radiates about 10 nm in two dimensional planning. The example organ in this study is the breast. Nanorobots enter from the upper side of breast and exit from the lower side of the breast in the clinical example. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
40. Cost analysis of a commercial pyroprocess facility on the basis of a conceptual design in Korea.
- Author
-
Kim, S.K., Ko, W.I., Youn, S.R., and Gao, Ruxing
- Subjects
- *
CONCEPT engineering , *WEIGHT-based pricing , *ELECTROMECHANICAL technology , *READY-reckoners - Abstract
This study postulated a commercial pyroprocess facility (KAPF+: Korea Advanced Pyroprocess Facility Plus) with a processing capacity of 400 tons/year as a cost object, and utilized an engineering cost estimation method based on a conceptual design to present the results of the total cost and unit cost estimation. According to the calculation results, the total cost and unit cost were calculated with k$779,386 and $781/kgHM, respectively. Moreover, the key cost driver was manifested as the operating and maintenance costs. In particular, equipment replacement cost was identified as an important cost driver. In addition, for an increasingly accurate cost estimation, the calculation results and allocation method of the indirect cost were reanalyzed. Finally the pyroprocess unit cost increased $5 when calculated the indirect cost using the labor time as the allocation standard. Meanwhile, the pyroprocess unit cost increased $22 as a result of allocating the indirect cost using the uniform labor cost as the cost allocation standard. Accordingly, an indirect cost allocation standard was manifested as the factor that exerts a significant effect on the pyroprocess unit cost. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
41. Combining structural performance and designer preferences in evolutionary design space exploration.
- Author
-
Mueller, Caitlin T. and Ochsendorf, John A.
- Subjects
- *
CONCEPTUAL design , *CONCEPT engineering , *EVOLUTIONARY algorithms , *NUMERICAL analysis , *PARAMETER estimation , *STRUCTURAL optimization - Abstract
This paper addresses the need to consider both quantitative performance goals and qualitative requirements in conceptual design. A new computational approach for design space exploration is proposed that extends existing interactive evolutionary algorithms for increased inclusion of designer preferences, overcoming the weaknesses of traditional optimization that have limited its use in practice. This approach allows designers to set the evolutionary parameters of mutation rate and generation size, in addition to parent selection, in order to steer design space exploration. This paper demonstrates the potential of this approach through a numerical parametric study, a software implementation, and series of case studies. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
42. A method for analysing conceptual design process of product-service systems.
- Author
-
Shimomura, Yoshiki, Nemoto, Yutaro, and Kimita, Koji
- Subjects
DESIGN ,CONCEPT engineering ,CONCEPTUAL design ,GUIDELINES ,PRODUCT design - Abstract
One of the major features of product-service systems (PSS) design is a variety of design elements. This makes its design process complex and obscure. This study aims to develop a method for analysing how the design process influences the features of design solutions in the conceptual design of PSS. In this study, protocol analysis is applied to plural PSS design sessions. Simultaneously, their design solutions are evaluated relatively based on several aspects. Their design processes are analysed in connection with the above evaluation results. The findings obtained by using the proposed method will contribute to creating practical design guidelines for superior PSS development. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
43. A new coevolution process for conceptual design.
- Author
-
Liu, Ang and Lu, Stephen C.-Y.
- Subjects
CONCEPTUAL design ,CONCEPT engineering ,NEW product development ,GEOMETRICAL drawing ,AXIOMATIC design - Abstract
Conceptual design involves coevolution of decisions between functional and physical domains. Different methods prescribe different processes to achieve coevolution, hence are suitable for different kinds of design practices. Analytical Target Cascading (ATC) features successive decompositions followed by coordinated optimizations to improve existing systems. Axiomatic Design Theory (ADT) follows a back-and-forth zigzagging process to create completely new systems. A new coevolution process, which is a hybrid between ATC and ADT, is developed from our Innovative Design thinking (IDT) research. This paper explains its theoretical underpinnings and illustrates its suitability for practices between the two extremes, e.g., innovative design on existing systems. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
44. An Exploratory Model for Understanding Culture in Student Design Team Idea Generation.
- Author
-
Wodehouse, Andrew and Maclachlan, Ross
- Subjects
CONCEPTUAL design ,CONCEPT engineering ,DESIGN students ,DESIGN education ,CULTURAL values - Abstract
This paper explores the relationship between measures within Hofstede's cultural framework and performance in concept design by setting out a methodology for evaluating the conceptual design output of student design teams from a cultural perspective. Economic globalization has meant that the management of global teams has become of strategic importance in product development. cultural diversity is a key factor in such teams, and this work seeks to better understand the effect this can have on two key aspects of the concept design process: concept generation and concept selection. three different measures were utilized in the analysis of a design study: aggregate cultural values, calculated individual cultural values and personality traits. the effectiveness of these is reviewed, and a methodology presented that provides a basis for more tangible consideration of how culture impacts upon active concept design teams. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
45. Representing Sampled Pareto Frontiers as Parameterized Continuous Manifolds Using Self-Organizing Maps.
- Author
-
Daskilewicz, Matthew J. and German, Brian J.
- Subjects
- *
PARETO analysis , *BARYCENTRIC dynamical time , *AIRPLANE wing design , *CONCEPTUAL design , *CONCEPT engineering - Abstract
This paper describes a method for defining a coordinate system to parameterize a sampled Pareto frontier of a continuous multi-attribute design problem using a modified self-organizing map. By defining such a coordinate system, the design problem may be reformulated from y = f (x) to (y,x) = g(ψ), where x is a vector of design variables, y is a vector of attributes, and ψ is a vector of barycentric coordinates. Exploration of the design problem using yr as the independent variables has the following desirable properties: 1) Every vector yr corresponds to a Pareto efficient design, and every Pareto efficient design has a corresponding ψ. 2) The number of ψ coordinates is equal to the number of attributes, regardless of the number of design variables. 3) Each attribute yi has a corresponding coordinate ψ, such that the sign of ∂yi/∂ψi is positive if the objective is to maximize y, and negative if the objective is to minimize yi (i.e., the attributes improve monotonically as their corresponding coordinates increase). This approach, named the "Pareto simplex self-organizing map" is easily implemented as a postprocessing step to sampling a Pareto frontier with multi-objective optimization. The construction of the coordinates and their use in design space exploration is demonstrated on a conceptual wing design problem. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
46. A Preliminary study on the seismic conceptual design.
- Author
-
Zhao, Zhen and Xie, Lili
- Subjects
- *
SEISMOLOGY , *CONCEPTUAL design , *CONCEPT engineering , *EARTHQUAKE damage , *PLATE tectonics , *CIVIL engineering - Abstract
The seismic conceptual design is an essential part of seismic design codes. It points out that the term 'seismic conceptual design' should imply three aspects, i.e., the given concept itself, the specific provisions related to the given concept and the designing following the provisions. Seismic conceptual design can be classified into two categories: the strict or traditional seismic conceptual design and the generalized seismic conceptual design. The authors are trying to define for both conceptual designs their connotations and study their characteristics, in particular, the differences between them. Authors emphasize that both conceptual designs sound very close, however, their differences are apparent. The strict conceptual designs are usually worked out directly from engineering practice and/or lessons learnt from earthquake damage, while the generalized conceptual designs are resulted in a series of visions aiming to realize the general objectives of the seismic codes. The strict conceptual designs, (traditional conceptual designs) are indispensable elements of seismic codes in assuring designed structures safer and the generalized conceptual designs are playing key roles in directing to a more advanced and effective seismic codes. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
47. Alternation of analysis and synthesis for concept generation.
- Author
-
Liu, Ang and Lu, Stephen C.-Y.
- Subjects
CONCEPT engineering ,NEW product development ,PRODUCT life cycle ,BRAINSTORMING ,MANUFACTURING processes - Abstract
Abstract: Concept generation involves both analysis and synthesis activities interchangeably. In current practice, these two activities are often loosely defined and randomly performed. This paper presents a new method, called the Analysis Synthesis Alternation (ASA) approach, which treats concept generation as a proposition-making process and adapts the formal logic definitions of analytic and synthetic propositions to generate new concepts via two stages: ideation and validation. Both stages involve systemic alternations between analytic and synthetic propositions, but the alterations are performed in reverse reasoning directions. Experiment shows that ASA outperforms traditional brainstorming technique in both novelty and functionality. [Copyright &y& Elsevier]
- Published
- 2014
- Full Text
- View/download PDF
48. CONCEPTION OF MECHANICAL PRODUCTS IN A MODERN PARAMETRIC MANNER.
- Author
-
Ghionea, Ionuţ Gabriel
- Subjects
- *
PARAMETRIC modeling , *COMPUTER-aided design , *GEAR pumps , *CONCEPT engineering , *NEW product development - Abstract
In the last years, a modern interest in the conception of products is to use parametric modeling of their parts and assemblies applying a modern and complex CAD system. The engineer is able to consider a wide choice of possible variants in the early design phases. These CAD systems have PLM support, offering a competitive and intuitive working environment in which the product's model is conceived. Using the 3D geometric modeling capabilities, the engineer creates models, by operations applied to the product's parts. The 3D CAD model of the product is completed by mathematical description, parameters and constraints. These conditions imposed in the design phase will modify and influence the product conception in any modeling phase. The resulted solution can be tested in various ways to prove its correctitude. Some theoretical aspects about the design process of the mechanical products in a modem parametric manner are presented in this paper including two case studies for gear pumps. These parameterizations offer many possibilities in obtaining assemblies and families of parts using the CATIA v5 software. [ABSTRACT FROM AUTHOR]
- Published
- 2014
49. The Habitation Lab: Using a Design Approach to Foster Innovation for Sustainable Living.
- Author
-
Femenías, Paula and Hagbert, Pernilla
- Subjects
SUSTAINABLE living ,SUSTAINABILITY & society ,TECHNOLOGICAL innovations ,ENERGY consumption ,ARCHITECTURE & the environment ,CONCEPT engineering - Abstract
This article describes a first step towards a strategy for using living labs as a means to foster innovation and develop new concepts of sustainable living from an architectural point of view. The overall aim is to enable truly sustainable living through radically reduced energy and resource use thus addressing both environmental and social aspects of sustainability. Earlier research has shown that contemporary housing developments, including those with a sustainable profile, do not profoundly question modern lifestyles and consumption, which is a necessity to overcome limitations of a technological focus on environmental efficiency in construction. Thus, we see an opportunity for the discipline of architecture to engage in current investments in living lab facilities in order to push innovation in the field of sustainable housing. We introduce the concept of a "Habitation Lab", which will provide an arena for radical and high-risk design experimentation between users, building-sector actors, and academia, and we describe a case study of a planned Habitation Lab within a living lab facility where traditional solutions for daily living and habitation are questioned and new architectural innovations are explored and evaluated. The idea of using experimental activities in the field of housing is not new, and we argue that new investments should build on earlier experiences to avoid perpetuating misconceptions and repeating past failures. Furthermore, to ensure the dissemination and uptake of results, the design of the Habitation Lab should consider the innovation and learning trajectories of the building sector. We propose a transdisciplinary setting to provide a neutral arena for value creation and to increase the distribution of experiences. [ABSTRACT FROM AUTHOR]
- Published
- 2013
50. JPL Innovation Foundry.
- Author
-
Sherwood, Brent and McCleese, Daniel
- Subjects
- *
SPACE sciences , *SPACE flight , *AERONAUTICS , *AEROSPACE engineering , *FORCE ratio , *ASTRONAUTICS - Abstract
Abstract: Space science missions are increasingly challenged today: in ambition, by increasingly sophisticated hypotheses tested; in development, by the increasing complexity of advanced technologies; in budgeting, by the decline of flagship-class mission opportunities; in management, by expectations for breakthrough science despite a risk-averse programmatic climate; and in planning, by increasing competition for scarce resources. How are the space-science missions of tomorrow being formulated? The paper describes the JPL Innovation Foundry, created in 2011, to respond to this evolving context. The Foundry integrates methods, tools, and experts that span the mission concept lifecycle. Grounded in JPL's heritage of missions, flight instruments, mission proposals, and concept innovation, the Foundry seeks to provide continuity of support and cost-effective, on-call access to the right domain experts at the right time, as science definition teams and Principal Investigators mature mission ideas from “cocktail napkin” to PDR. The Foundry blends JPL capabilities in proposal development and concurrent engineering, including Team X, with new approaches for open-ended concept exploration in earlier, cost-constrained phases, and with ongoing research and technology projects. It applies complexity and cost models, project-formulation lessons learned, and strategy analyses appropriate to each level of concept maturity. The Foundry is organizationally integrated with JPL formulation program offices; staffed by JPL's line organizations for engineering, science, and costing; and overseen by senior Laboratory leaders to assure experienced coordination and review. Incubation of each concept is tailored depending on its maturity and proposal history, and its highest-leverage modeling and analysis needs. [Copyright &y& Elsevier]
- Published
- 2013
- Full Text
- View/download PDF
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