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39 results on '"Mac Thi Bich"'

1. Influence of Blank Holder Force and Limiting Drawing Ratio on Fracture Height During Cup—Drawing Process of SECC Sheet Metal

Author

Mac, Thi-Bich, Ly, Ngoc-Quyet, Luyen, The-Thanh, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Long, Banh Tien, editor, Ishizaki, Kozo, editor, Kim, Hyung Sun, editor, Kim, Yun-Hae, editor, Toan, Nguyen Duc, editor, Minh, Nguyen Thi Hong, editor, and Duc An, Pham, editor

Published
2024
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2. Experimental Study on the Forming Limit Curve of SECC Sheet Material

Author

Luyen, The-Thanh, Nguyen, Minh-Tan, Banh, Tien-Long, Nguyen, Duc-Toan, Mac, Thi-Bich, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Long, Banh Tien, editor, Ishizaki, Kozo, editor, Kim, Hyung Sun, editor, Kim, Yun-Hae, editor, Toan, Nguyen Duc, editor, Minh, Nguyen Thi Hong, editor, and Duc An, Pham, editor

Published
2024
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4. Performance Analysis of Copper Coated Aluminum Tool in Electrode Discharge Machining of Ti-6Al-4V Alloy

Author

Nguyen, Huu-Phan, Banh, Tien-Long, Shirguppikar, Shailesh S., Patil, Maharudra S., Mac, Thi-Bich, Le, Quang-Dung, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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5. Cooling Effect Analysis of Equipment Cabinets in Mid-range 3D Radar Systems by Experimental Study and Numerical Simulation

Author

Cao, Van Doan, Le, Duc Dung, Dang, Anh Quang, Nguyen, Van Nghia, Mac, Thi Bich, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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6. Multi Response Optimization on Machining Process Using Taguchi-DEAR Analysis in Powder Mixed EDM Process

Author

Le, Quang-Dung, Nguyen, Huu-Phan, Banh, Tien-Long, Duong-Vu, Mac, Thi-Bich, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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7. A Study on Mechanical Properties of SKD11 Steel at Elevated Temperatures

Author

Mac, Thi-Bich, Luyen, The-Thanh, Vuong, Gia-Hai, Banh, Tien-Long, Nguyen, Duc-Toan, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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8. Thinning Prediction of Sheet Metal in Deep Drawing Process of a Cylindrical Cup Made of SPCC Material

Author

Luyen, The-Thanh, Mac, Thi-Bich, Banh, Tien-Long, Nguyen, Duc-Toan, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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9. Combined Simulation and Experimental Study on the Fracture Heights of the Cylinder Cup to Predict Forming Limit Curves of SPCC Material at Warm Temperatures

Author

Luyen, The-Thanh, Mac, Thi–Bich, Banh, Tien–Long, Nguyen, Duc-Toan, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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10. Multi-objective Optimization of Cutting Force, Surface Roughness and Vibration Amplitude During End Milling SKD11 Steel

Author

Mac, Thi-Bich, Tran, Vinh-Hung, Luyen, The-Thanh, Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, di Mare, Francesca, Series Editor, Long, Banh Tien, editor, Kim, Yun-Hae, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Vu, Ngoc Pi, editor

Published
2021
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11. A Study on Vibration During Heat Assisted End Milling of SKD11 Tool Steel

Author

Mac, Thi-Bich, Luyen, The-Thanh, Banh, Tien-Long, Nguyen, Duc-Toan, Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, di Mare, Francesca, Series Editor, Long, Banh Tien, editor, Kim, Yun-Hae, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Vu, Ngoc Pi, editor

Published
2021
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12. Optimization of Surface Roughness and Vibration During Thermal—Assisted Milling SKD11 Steel Using Taguchi Method

Author

Mac, Thi-Bich, Long, Banh Tien, Nguyen, Duc-Toan, Ghosh, Arindam, Series Editor, Chua, Daniel, Series Editor, de Souza, Flavio Leandro, Series Editor, Aktas, Oral Cenk, Series Editor, Han, Yafang, Series Editor, Gong, Jianghong, Series Editor, Jawaid, Mohammad, Series Editor, Parinov, Ivan A., editor, Chang, Shun-Hsyung, editor, and Long, Banh Tien, editor

Published
2020
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14. Macroscopic models of collective motion with repulsion

Author

Degond, Pierre, Dimarco, Giacomo, Mac, Thi Bich Ngoc, and Wang, Nan

Subjects
Mathematical Physics
Abstract

We study a system of self-propelled particles which interact with their neighbors via alignment and repulsion. The particle velocities result from self-propulsion and repulsion by close neighbors. The direction of self-propulsion is continuously aligned to that of the neighbors, up to some noise. A continuum model is derived starting from a mean-field kinetic description of the particle system. It leads to a set of non conservative hydrodynamic equations. We provide a numerical validation of the continuum model by comparison with the particle model. We also provide comparisons with other self-propelled particle models with alignment and repulsion.

Published
2014

15. Hydrodynamics of the Kuramoto-Vicsek model of rotating self-propelled particles

Author

Degond, Pierre, Dimarco, Giacomo, and Mac, Thi Bich Ngoc

Subjects
Mathematical Physics
Abstract

We consider an Individual-Based Model for self-rotating particles interacting through local alignment and investigate its macroscopic limit. This model describes self-propelled particles moving in the plane and trying to synchronize their rotation motion with their neighbors. It combines the Kuramoto model of synchronization and the Vicsek model of swarm formation. We study the mean-field kinetic and hydrodynamic limits of this system within two different scalings. In the small angular velocity regime, the resulting model is a slight modification of the 'Self-Organized Hydrodynamic' model which has been previously introduced by the first author. In the large angular velocity case, a new type of hydrodynamic model is obtained. A preliminary study of the linearized stability is proposed.

Published
2013

18. Analyzing cutting force and vibration amplitude in high-speed milling of SKD11 steel with thermal assistance.

Author

Luyen, The-Thanh, Mac, Thi-Bich, and Nguyen, Duc-Toan

Abstract

In the realm of machining, the optimization of cutting conditions stands as a paramount pursuit for enhancing both efficiency and precision. This study embarks on a pioneering investigation delving into the intricate interplay among workpiece temperature, Thermal-Assisted High-Speed Machining (TA-HSM), cutting force dynamics, and vibration amplitudes during the milling process of SKD11 steel. Beyond a mere exploration, this research endeavors to unveil not only the impact of temperature and velocity on machining dynamics but also to delineate regions characterized by elevated temperature and velocity that exhibit the potential to mitigate cutting forces and vibrations, thereby refining machining methodologies. Experimental inquiries encompassing diverse temperature regimes, coupled with variations in cutting speeds, offer valuable insights into the nexus among temperature, cutting force and vibration amplitude. Of particular significance are the high-speed milling trials conducted under the most elevated admissible support temperature, which furnish elucidation on the ramifications of high speeds on cutting forces and vibrations. This inquiry constitutes a substantive contribution to the field by elucidating the correlation between cutting force and vibration amplitude under the thermal influence and high-speed milling within thermally demanding environments. Moreover, this study extends practical utility by proffering actionable insights into the optimal temperature range and cutting speeds requisite for effecting desired enhancements in machining productivity. By discerning and delineating these optimal parameters, this research endeavors to furnish tangible guidelines for practitioners seeking to optimize their machining processes, thus fostering advancements in both efficiency and precision within the machining domain. [ABSTRACT FROM AUTHOR]

Published
2024
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23. A comparative investigation on theoretical models for forming limit diagram prediction of automotive sheet metals.

Author

Pham, Quoc Tuan, Mac, Thi Bich, Kim, Young-Suk, and Nguyen, Duc Toan

Subjects
*SHEET metal, *METAL formability, *AUTOMOTIVE engineering, *ENGINEERING design, *ALUMINUM alloys
Abstract

Determination of sheet metal formability, which is commonly evaluated through a forming limit curve (FLC), is an essential task for part designs in the automotive engineering community. This study provides a coherent comparison among four theoretical FLC criteria including Swift's instability, Hill's localized neck, Storen–Rice bifurcation analysis, and Hora's MMFC. Within these criteria, closed-form solutions for FLC are available for fast and expensiveness explicitly estimating the forming limit diagram (FLD) of sheet metals. According to their closed-form solutions, an empirical suggestion is proposed to improve the accuracy of the theoretical FLC. Quantitative comparisons are then made to evaluate the performance of these criteria for numerous aluminum alloys and steel sheets which are frequently used in automotive industries. Based on the comparisons, the advantages and limitations of each model are discussed from a physical point of view, which appears to be a useful suggestion for selecting a proper theoretical model to evaluate the FLD of sheet metals without conducting experimental tests. [ABSTRACT FROM AUTHOR]

Published
2023
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26. Experimental Researching of Thermal - Assisted Milling with Induction on Surface Roughness of SKD11 Steel

Author

Banh Tien Long, Mac Thi Bich, Nguyen Duc Toan, and Pham Thi Hoa

Subjects
Materials science, Induction heating, Thermal, Surface roughness, General Medicine, Composite material
Abstract

This paper presents experimental studied results about surface roughness during end milling SKD11 steel under room temperature and work-piece preheated condition. Conventional samples were first performed. The samples which are same technical parameters were then performed at elevated temperatures to evaluate effective of heating process on the surface roughness. Orthogonal array Taguchi method was used to experimental design. The results showed that the surface quality of product was significantly improved under thermal - assisted milling. The surface roughness model during machining at room and elevated temperatures were evaluated and showed a good agreement with result of experiments.

Published
2019

28. A Comparison Study by Simulation/Experiment to Verify the Effect of Predicted Forming Limit Diagram Based on Graphical Method at Elevated Temperature for SPCC Sheet Material

Author

Luyen The-Thanh, Nguyen Duc-Toan, Mac Thi-Bich, and Banh Tien-Long

Subjects
Materials science, Forming limit diagram, Computer simulation, Position (vector), visual_art, Hardening (metallurgy), Fracture (geology), visual_art.visual_art_medium, Composite material, Deformation (engineering), Sheet metal, Finite element method
Abstract

Sheet metal forming processing based on the deformation of materials has taken an important position with an increasing proportion in mechanical manufacturing and metallurgy. In this study, in order to predict more accuracy forming limit curve (FLC) at elevated temperature, the uniaxial tensile test of SPCC sheet material at 150 °C was first performed to obtain the stress-strain curve at 150 °C. The graphical method based on the Modified Maximum Force Criterion (MMFC) was then applied to estimate the FLCs according to the hardening law of Swift at 150 °C elevated temperature. After that, the obtained FLCs data were used for numerical simulation using the finite element method (FEM) to predict the fracture heights of the SPCC sheet material cup by deep-drawing process and compare with corresponding experimental results. Comparison results between simulation and experiments show that Swift’s hardening model presents good predictions for fracture height compared to experimental data.

Published
2021

30. A study on the cutting force and chip shrinkage coefficient in high-speed milling of A6061 aluminum alloy

Author

Nguyen Duc-Toan, Mac Thi-Bich, Pham Thi-Hoa, Tong Van-Canh, and Banh Tien-Long

Subjects
0209 industrial biotechnology, Materials science, Cutting tool, Mechanical Engineering, Metallurgy, chemistry.chemical_element, 02 engineering and technology, Strain rate, Industrial and Manufacturing Engineering, Finite element method, Computer Science Applications, Taguchi methods, Rake angle, 020303 mechanical engineering & transports, 020901 industrial engineering & automation, 0203 mechanical engineering, chemistry, Control and Systems Engineering, Aluminium, Fracture (geology), Composite material, Software, Shrinkage
Abstract

In this paper, finite element (FE) simulation for high-speed milling of aluminum alloy was performed using a ductile fracture model with Mohr–Coulomb criterion proposed by Bai and Wierzbicki (BW). To verify the model, predicted cutting forces were compared to experimental results in the same cutting conditions. Then, further simulations were performed to estimate the cutting forces and chip shrinkage coefficients subjected to different cutting parameters such as cutting speeds, cutting depths, and clearance angles of a cutting tool. The obtained results were also used to determine optimal cutting parameters using the Taguchi method. The analysis of variance (ANOVA) was employed to investigate the influence percentage of each cutting parameter on cutting force and chip shrinkage coefficient. The simulation results showed that inclusion of strain rate in numerical model significantly improved the accuracy of estimated cutting force in comparison to experiment. The optimum values obtained for high-milling process were cutting speed 1000 m/min, cutting depth 1 mm, clearance angle 15°, and rake angle 4°.

Published
2017

36. Modélisation des suspensions de particules actives : application à la motilité séminale

Author

Mac, Thi-Bich-Ngoc and Mac, Thi-Bich-Ngoc

Abstract

Dans cette thèse, nous étudions le comportement collectif de particules auto-propulsées. Ce travail comporte trois parties. Dans la première partie, nous considérons un modèle individu-centré pour les particules d'auto rotation interagissant par une règle d'alignement et étudions leurs limites macroscopiques. Deux cas de sealing ont été étudiés. Dans le cas de petite vitesse angulaire, le modèle obtenu est une légère modification du modèle " Hydrodynamique auto-organisé " qui avait été introduit précédemment par Degond et Mostch. Dans le cas de grande vitesse angulaire, le modèle obtenu est plus compliqué. Une étude préliminaire de la stabilité linéaire a été également proposée. Dans la deuxième partie, nous étudions un modèle macroscopique du système de particules auto-propulsées interagissant avec leurs voisins par une règle d'alignement et de répulsion. Nous fournissons une validation numérique de ce modèle en le comparant avec le modèle individu centré. L'existence de solutions du modèle macroscopique à deux dimensions est prouvée. La dernière partie est consacrée à l'étude expérimentale du comportement collectif de robots auto-propulsés dans une enceinte annulaire confinée., In this thesis wc study collective motions of self-propelled particles. This work consists of three parts. In the first part, we consider an lndividual-Based Model for self-rotating particles interacting through local alignment and investigate its macroscopic Iimit. We study the mean-field kinetic and hydrodynamic limits of this system within two different scalings. In the small angular velocity regime, the resulting model is a slight modification of the " Self-Organised Hydrodynamic " model which has been previously inltroduced by Degond and Motsch. In the large angular velocity Case, the macroscopic model obtained is more complex. A preliminary study of the linearized stability is proposed. In the second part, we study a macroscopic model for a system of self-propelled particles which interact with their neighbors via alignment and repulsion. We provide a numerical validation of the continuum model by comparison with the particle model. The existence of local solutions of this macroscopic model is also studied. The last part concerns experimental investigation of collective behavior of simple robots in a confined ring.

Published
2014

38. HYDRODYNAMICS OF THE KURAMOTO-VICSEK MODEL OF ROTATING SELF-PROPELLED PARTICLES.

Author

DEGOND, PIERRE, DIMARCO, GIACOMO, and MAC, THI BICH NGOC

Subjects
HYDRODYNAMICS, MATHEMATICAL models, PARTICLES, SYNCHRONIZATION, FOKKER-Planck equation, PARAMETER estimation, DISPERSION relations
Abstract

We consider an Individual-Based Model for self-rotating particles interacting through local alignment and investigate its macroscopic limit. This model describes self-propelled particles moving in the plane and trying to synchronize their rotation motion with their neighbors. It combines the Kuramoto model of synchronization and the Vicsek model of swarm formation. We study the mean-field kinetic and hydrodynamic limits of this system within two different scalings. In the small angular velocity regime, the resulting model is a slight modification of the "Self-Organized Hydrodynamic" model which has been previously introduced by the first author. In the large angular velocity case, a new type of hydrodynamic model is obtained. A preliminary study of the linearized stability is proposed. [ABSTRACT FROM AUTHOR]

Published
2014
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39. Cutting Force Model for Thermal-Assisted Machining of Tool Steel Based on the Taguchi Method.

Author

Mac, Thi-Bich, Dinh, Van-Chien, Banh, Tien-Long, and Nguyen, Duc-Toan

Subjects
MACHINING, CUTTING (Materials), TAGUCHI methods, QUALITY control, INDUCTION heating, ELECTRIC heating
Abstract

This paper investigates cutting force in thermal-assisted machining (TAM) by induction heating for SKD11 tool steel which is widely used in the mold industry. Experimental studies were first conducted at room and elevated temperatures to evaluate the effectiveness of the heating process on chip morphology and the cutting forces during the thermal-assisted machining and comparing with conventional machining method. The Taguchi method based on orthogonal array and analysis of variance ANOVA method was then used to design the number of experiments and evaluate the influence of cutting speed, feed rate, cutting depth, and elevated temperature on the cutting force. Study results showed a decrease in the cutting force in the TAM process. The optimal condition of parameters obtained for thermal-assisted machining were cutting speed 280 m/min, feed rate 230 mm/min, cutting depth 0.5 mm and temperature 400 °C. Finally, a proposed equation was established to determine the cutting force that was presented as a function of elevated temperatures when milling SKD11 material. A proposed cutting force model was compared, evaluated and confirmed to be in good agreement with experimental results. [ABSTRACT FROM AUTHOR]

Published
2018
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