Search

Your search keyword '"Hensel, J."' showing total 398 results
Start Over Author "Hensel, J."
398 results on '"Hensel, J."'

5. Thick-wire GMAW for fusion welding of high-strength steels.

Author

Neumann, M., Haelsig, A., Hoefer, K., and Hensel, J.

Abstract

The paper describes a high-current Gas Metal Arc Welding (GMAW) process using wire electrodes with diameters up to 4.0 mm for single-pass full penetration butt joint welding of 20 mm thick steel plates. Fundamental research aims to develop thick-wire GMAW into a high-efficiency method by identifying the limits of welding performance and achievable deposition rates. Current gaps in understanding include equipment requirements, process properties, application fields, and weld quality. The research project addresses these gaps through systematic investigations of basic technological analyses, application sample welding, and quality evaluations. The objective was to create a robust, cost-efficient gas-shielded high-performance welding technology with deposition rates comparable to Submerged Arc Welding. The fully mechanized, automatic welding setup included two parallel-connected welding power sources, one wire feeder and one high-power welding torch. Welding parameters and conditions were evaluated with the aim of achieving a high-quality weld. Optimal parameters were identified for one-sided single-pass welding on 20 mm thick plates. Validation of thick-wire GMAW for 20 mm thick high-strength steels was conducted via two-sided single-pass welding on S690Q grade plates. Testing of the weld joint included static tensile strength test (3x tensile specimen), a Charpy impact test at −40 °C (6x Charpy V-notch specimens respectively with notch position in weld metal, base material and heat-affected zone (HAZ)), microstructure examination and a hardness test. The lowest recorded impact energy was observed to be 50 J within the weld metal, in combination with hardness peaks in the HAZ reaching 415 HV1, and all tensile specimens failing outside the HAZ within the base material. The process achieved reliable, reproducible, and economical joint welding, meeting necessary mechanical-technological quality standards. The paper enhances the understanding of selected welding techniques tor thick plate joining and offers valuable industrial insights, demonstrating the technique's applicability and feasibility for high-strength applications. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

15. Lower Runtime Bounds for Integer Programs

Author

Frohn, F., Naaf, M., Hensel, J., Brockschmidt, M., Giesl, J., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Olivetti, Nicola, editor, and Tiwari, Ashish, editor

Published
2016
Full Text
View/download PDF

17. A Review of the 2018 U.S.-DOE CLEERS Conference: Trends and Deeper Insights in Reduction of NOxand Particulate in Diesel and Gasoline Engines and Advances in Catalyst Materials, Mechanisms, and Emission Control Technologies

Author

Masoudi, M., Hensel, J., and Tegeler, E.

Abstract

The annual CLEERS conference sponsored by the U.S. Department of Energy and organized by the Oak Ridge National Laboratory was held in Ann Arbor, MI, 18–20 September 2018. It brought together emission control scientists, engineers, and investigators from academia, national labs, and industry from across the U.S. and abroad, discussing the latest emission control technologies, trends, challenges, and regulations. Presentations, deliberations, exchanges, and panel discussions displayed a much-needed focus on the latest up-and-coming approaches to further advance NOxreduction, a major remaining challenge especially in diesel emission control, using further advances in selective catalytic reduction (SCR) of NOx, passive NOxadsorbers, lean NOxtraps, and SCR on particulate filter, amongst others. Discussions were further held on diesel oxidation catalysts, gasoline particulate filters, three-way catalysts, and hydrocarbon SCR, and also on the latest catalyst washcoat technologies, materials, and catalytic processes such as diffusion and kinetics, testing, and computer simulations.

Published
2024
Full Text
View/download PDF

18. Exposure to Client Aggression and Burnout among Community Staff Who Support Adults with Intellectual Disabilities in Ontario, Canada

Author

Hensel, J. M., Lunsky, Y., and Dewa, C. S.

Abstract

Background: Studies have shown that staff who support adults with intellectual disabilities (ID) are exposed to challenging behaviour in their work including client aggression. Exposure to aggressive behaviour has been associated with staff stress and burnout. Study samples have been small however, and there has been very little data exploring this issue among North American staff. Methods: A cross-sectional survey which included demographics, measures of frequency and severity (including perceived severity and a standardised severity score) of exposure to client aggression and the Maslach Burnout Inventory-Human Services Survey (MBI-HSS) was completed by 926 community staff who support adults with ID in Ontario, Canada. Relationships between demographic variables and exposure to aggression were examined with descriptive statistics. Pearson correlations were used to analyse exposure variables and MBI-HSS scores. Results: Nearly all staff reported being exposed to client aggression in the prior 6 months. Mean MBI-HSS scores were comparable to previously published data in similar populations with the exception of a higher score in the personal accomplishment domain. All measures of exposure to aggression were significantly positively correlated with MBI-HSS scores in the emotional exhaustion and depersonalisation dimensions of burnout. Conclusions: The prevalence of burnout in this North American sample is comparable to what has been reported in similar populations in other locations, although these staff may have a higher sense of accomplishment with regard to their work. Findings from this large sample support the evidence that exposure to client aggression affects staff emotional well-being but is by no means the only important factor. Further study is needed to explore the differences and similarities reported here as well as other contributing factors which will guide the implementation of effective strategies to improve staff well-being. (Contains 2 tables.)

Published
2012
Full Text
View/download PDF

23. Acute psychiatric care: approaches to increasing the range of services and improving access and quality of care

Author

Johnson, S, Dalton‐locke, C, Baker, J, Hanlon, C, Salisbury, T, Fossey, M, Newbigging, K, Carr, S, Hensel, J, Carrà, G, Hepp, U, Caneo, C, Needle, J, Lloyd‐evans, B, Johnson, Sonia, Dalton‐Locke, Christian, Baker, John, Hanlon, Charlotte, Salisbury, Tatiana Taylor, Fossey, Matt, Newbigging, Karen, Carr, Sarah E., Hensel, Jennifer, Carrà, Giuseppe, Hepp, Urs, Caneo, Constanza, Needle, Justin J., Lloyd‐Evans, Brynmor, Johnson, S, Dalton‐locke, C, Baker, J, Hanlon, C, Salisbury, T, Fossey, M, Newbigging, K, Carr, S, Hensel, J, Carrà, G, Hepp, U, Caneo, C, Needle, J, Lloyd‐evans, B, Johnson, Sonia, Dalton‐Locke, Christian, Baker, John, Hanlon, Charlotte, Salisbury, Tatiana Taylor, Fossey, Matt, Newbigging, Karen, Carr, Sarah E., Hensel, Jennifer, Carrà, Giuseppe, Hepp, Urs, Caneo, Constanza, Needle, Justin J., and Lloyd‐Evans, Brynmor

Abstract

Acute services for mental health crises are very important to service users and their supporters, and consume a substantial share of mental health resources in many countries. However, acute care is often unpopular and sometimes coercive, and the evidence on which models are best for patient experience and outcomes remains surprisingly limited, in part reflecting challenges in conducting studies with people in crisis. Evidence on best ap-proaches to initial assessment and immediate management is particularly lacking, but some innovative models involving extended assessment, brief interventions, and diversifying settings and strategies for providing support are potentially helpful. Acute wards continue to be central in the intensive treatment phase following a crisis, but new approaches need to be developed, evaluated and implemented to reducing coercion, addressing trauma, diversifying treatments and the inpatient workforce, and making decision-making and care collaborative. Intensive home treatment services, acute day units, and community crisis services have supporting evidence in diverting some service users from hospital admission: a greater understanding of how best to implement them in a wide range of contexts and what works best for which service users would be valuable. Approaches to crisis management in the voluntary sector are more flexible and informal: such services have potential to complement and provide valuable learning for statutory sector services, especially for groups who tend to be underserved or disengaged. Such approaches often involve staff with personal experience of mental health crises, who have important potential roles in improving quality of acute care across sectors. Large gaps exist in many low- and middle-income countries, fuelled by poor access to quality mental health care. Responses need to build on a foundation of existing community responses and contextually relevant evidence. The necessity of moving outside formal systems in lo

Published
2022

25. The Change Process in Education: A Selected and Annotated Bibliography. Final Report.

Author

Ohio State Univ., Columbus. Center for Vocational and Technical Education., Skelton, Gail J., and Hensel, J. W.

Abstract

This document was developed as a working paper by a research staff concerned with the change process in vocational and technical education. Works selected for inclusion treat: (1) the change process in education rather than in other fields, (2) the relationship between various types of communication processes, patterns, structures and high or low change orientation and/or adoption behavior in an educational organization, (3) decision-making process in an educational organization, and (4) communication behavior patterns of opinion leaders and isolates. Abstracts are arranged under the following headings: (1) Empirical Works on the Change Process, (2) Theoretical or Non-Empirical Works on the Change Process, (3) Collections of Readings on the Change Process, (4) Bibliographies on the Change Process, and (5) Works from Dissertation Abstracts. Titles which are available through the Educational Resourses Information Center (ERIC) list an ERIC document number, the issue of Research in Education (RIE) containing the ERIC resume, and microfiche and hard copy prices following the bibliographic citation. The 135 cited documents are arranged alphabetically in a bibliographic index. (DM)

Published
1970

28. Interaction between APOE ε4 genotype and educational attainment and its impact on mild cognitive impairment in the Heinz Nixdorf Recall Study

Author

Frank, M, Hensel, J, Dragano, N, Weimar, C, Jokisch, M, Jöckel, KH, and Schmidt, B

Subjects
mild cognitive impairment, ddc: 610, mental disorders, 610 Medical sciences, Medicine, gene-education interaction
Abstract

Background: Studies have identified the apolipoprotein E (APOE) ε4 genotype to be a genetic risk factor for mild cognitive impairment (MCI), an early stage of Alzheimer's disease. Research further indicated that environmental factors might modify the genetic effect on MCI, with high education[for full text, please go to the a.m. URL], 65th Annual Meeting of the German Association for Medical Informatics, Biometry and Epidemiology (GMDS), Meeting of the Central European Network (CEN: German Region, Austro-Swiss Region and Polish Region) of the International Biometric Society (IBS)

Published
2021
Full Text
View/download PDF

31. Comparative study of deposition patterns for DED-Arc additive manufacturing of Al-4046

Author

Köhler, M. (Markus), Sun, L. (Li), Hensel, J. (Jonas), Pallaspuro, S. (Sakari), Kömi, J. (Jukka), Dilger, K. (Klaus), Zhang, Z. (Zhiliang), Köhler, M. (Markus), Sun, L. (Li), Hensel, J. (Jonas), Pallaspuro, S. (Sakari), Kömi, J. (Jukka), Dilger, K. (Klaus), and Zhang, Z. (Zhiliang)

Abstract

Quality assurance is one of the largest challenges to the widespread adoption of metal additive manufacturing technology. Deposition pattern can significantly impact the temperature distribution during manufacturing process and thus the overall quality and residual stress formation of the manufactured components. In order to explore the intricate relationship, three different deposition patterns in DED-Arc additive manufacturing, the meander pattern, the spiral pattern and the newly developed S pattern, were experimentally and numerically scrutinized in terms of the resulting temperature distribution, grain size, porosity as well as residual stress formation. The study reveals that the variation of the deposition paths results in characteristic temperature fields and gradients with distinct local peak temperatures that determine the deposition quality, and simultaneously offers great degrees of freedom for optimal pattern design. Comparing the results with different deposition patterns, the S pattern leads to a more homogeneous temperature distribution, showing beneficial effects on the microstructure, porosity and residual stress formation in the deposited Al-4046 material, and is thus regarded as a promising alternative for improving additively manufactured parts quality.

Published
2021

38. Beeinflusst luftgeleiteter Ultraschall die kognitive Leistung?

Author

Bug, M, Brühl, R, Weichenberger, M, Hensel, J, Schöneweiß, R, Kühn, S, and Koch, C

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

In der heutigen Zeit existieren sowohl in Arbeitsumgebungen als auch im alltäglichen Umfeld Schallquellen, die luftgeleiteten Ultraschall emittieren. Die Exposition mit luftgeleitetem Ultraschall betrifft eine potentiell große Personenzahl und wirft die Frage auf, inwiefern dieser eine mögliche[zum vollständigen Text gelangen Sie über die oben angegebene URL], 22. Jahrestagung der Deutschen Gesellschaft für Audiologie

Published
2019
Full Text
View/download PDF

39. Innovationen

Author

Raschke, M., primary, Csimma, C., additional, Valentin-Opran, A., additional, Fabry, W., additional, Bettag, Ch., additional, Hirche, H., additional, Kock, H.-J., additional, Ditzen, W., additional, Börner, Martin, additional, Hensel, J., additional, Radebold, T., additional, Burchhardt, H., additional, Stürmer, K. M., additional, Esenwein, S. A., additional, Hopf, F., additional, Pommer, A., additional, Kutscha-Lissberg, F., additional, Kollig, E., additional, Muhr, G., additional, Berlemann, U., additional, Franz, T., additional, Heini, P. F., additional, Grotz, M., additional, Baur, H., additional, Pape, H.-C., additional, Krettek, C., additional, Neubert, T. R., additional, Baacke, M., additional, Stiletto, R., additional, Freyenhagen, E., additional, Gotzen, L., additional, Voeltz, P., additional, Hasse, W., additional, Faschingbauer, M., additional, Euler, E. A. H., additional, Wirth, S., additional, Linsenmaier, U., additional, Mutschler, W., additional, Kleinod, F., additional, Putzier, M., additional, Zippel, H., additional, Veigel, H., additional, Clasbrummel, B., additional, Reckwitz, N., additional, Bolz, A., additional, Schieri, M., additional, and Petermann, J., additional

Published
2001
Full Text
View/download PDF

40. Postersession VI-Soft Tissue/Knorpel

Author

Schwarz, W., primary, Friemert, B., additional, Oberländer, Y., additional, Danz, B., additional, Bähren, W., additional, Gerngroß, H., additional, Maier, G. M., additional, Weindel, S., additional, Müller-Rath, R., additional, Bolte, S., additional, Maier, V., additional, Mommsen, U., additional, Baacke, M. G., additional, Stiletto, R., additional, Leppek, R., additional, Bäthis, H., additional, Tingart, M., additional, Bouillon, B., additional, Gaitzsch, A., additional, Bogosi, T., additional, Merényi, G., additional, Atanaszov, T., additional, Schubert, S., additional, Piatek, S., additional, Westphal, T., additional, Bürger, T., additional, Winckler, S., additional, Scola, E., additional, Simanski, C., additional, Koch-Epping, G., additional, Tiling, T., additional, Rühmann, O., additional, Wirth, C., additional, Gossé, F., additional, Schmolke, S., additional, Dumont, C., additional, Stanković, P., additional, Fuchs, M., additional, Stürmer, K. M., additional, Jezussek, D., additional, Kleine, L., additional, Weber, O., additional, Schmidgen, A., additional, Wentzensen, A., additional, Hinsche, A. F., additional, Joseph, J., additional, Giannoudis, P. V., additional, Matthews, S. J., additional, Smith, R. M., additional, Mueller, J. E., additional, Ilchmann, T., additional, Lowatscheff, T., additional, Sterk, J., additional, Völker, H. U., additional, Willy, C., additional, Manak, P., additional, Drac, P., additional, Frebel, T., additional, Leidinger, B., additional, Joist, A., additional, Joosten, U., additional, Klever, P., additional, Siekmann, U. P. F., additional, Erli, H. J., additional, Haltern, C., additional, Rossaint, R., additional, Paar, O., additional, Niebauer, T., additional, Gehr, J., additional, Friedl, W., additional, Tóth, L., additional, Kovács, J., additional, Fierpasz, F., additional, Dósa, G., additional, Radebold, T., additional, Hensel, J., additional, Bischoff, M., additional, Grabensee, R., additional, Schmelz, A., additional, Kinzl, L., additional, Huber, F., additional, Scherer, M. A., additional, Metak, G., additional, v. Gumppenberg, S., additional, Fuchs, T., additional, Schmidmaier, G., additional, Hoffmann, J. E., additional, Raschke, M., additional, Betthäuser, A., additional, Raabe, K., additional, Hille, E., additional, Bickert, T., additional, Folgmann, J., additional, Kurten, K., additional, Kühne, C., additional, Klinger, O., additional, Gotzen, L., additional, Schnabel, M., additional, Wenski, M., additional, von Garrel, T., additional, Förtsch, M., additional, Prymka, M., additional, Zeller, R., additional, Schürmann, M., additional, Zaspel, J., additional, Wipfel, A., additional, Gradl, G., additional, Herzog, C., additional, Bauer, M., additional, Clemens, M. G., additional, Marzi, I., additional, Lehmann, W., additional, Linhart, W., additional, Schilling, A. F., additional, Schwarz, K., additional, Epple, M., additional, Rueger, J. M., additional, Blum, J., additional, Högner, M., additional, Baumgart, F., additional, Rommens, P. M., additional, Pszolla, M., additional, Keppler, P., additional, Strecker, W., additional, Dollriess, C., additional, Kollig, E., additional, Hopf, F., additional, Muhr, G., additional, Henke, T., additional, Gruber, S., additional, Schmidt, J., additional, Winker, K. H., additional, Degreif, J., additional, Müller, L. P., additional, Rudig, L., additional, Ewert, A., additional, Scheller, A., additional, Voigt, C., additional, Rahmanzadeh, R., additional, Kettler, M., additional, Trageiser, S., additional, Baumgart, R., additional, Mutschler, W., additional, Frosch, K.-H., additional, Schmid, A., additional, Altenvoerde, G., additional, Schiefer, U. R., additional, Nijs, J. B., additional, Broos, P. L. O., additional, Pape, D., additional, Fritsch, E., additional, Adam, A., additional, Kohn, D., additional, Thannheimer, A., additional, Ketterl, R., additional, Brüner, S., additional, Wittemann, M., additional, Karle, B., additional, Germann, G., additional, Gänsslen, A., additional, Pohlemann, T., additional, Pape, H. C., additional, Tscherne, H., additional, Grotz, M., additional, Kaufmann, U., additional, Danelia, N., additional, Wippermann, B. W., additional, Mahlke, L., additional, Winny, M., additional, Pape, H.-C., additional, Gonschorek, O., additional, Rüttinger, D., additional, Hofmann, G. O., additional, Bühren, V., additional, Liener, U. C., additional, Brückner, U. B., additional, Steinbach, G., additional, Gebhard, F., additional, Rummeny, M., additional, Fell, M., additional, Kottkamp, H. W., additional, Meißer, A., additional, Sarkar, M., additional, Billharz, E., additional, Andermahr, J., additional, Helling, H. J., additional, Hensler, T., additional, Greb, A., additional, Neugebauer, E., additional, Rehm, K. E., additional, Weinberg, A.-M., additional, Hawi, R., additional, Jablonski, M., additional, Hofmann, H., additional, Zdichavsky, M., additional, Bastian, L., additional, Knop, C., additional, Lange, U., additional, Lotz, J., additional, Blauth, M., additional, Grün, O., additional, Gössling, T., additional, Müller-Heine, A., additional, Schandelmaier, P., additional, Halder, A., additional, Drischmann, S., additional, Ludwig, S., additional, Kreusch-Brinker, R., additional, Karl, A., additional, Stumpf, M., additional, Jonas, F., additional, Neumann, C., additional, Nerlich, M., additional, Ohnsorge, J., additional, Wirtz, D.-C., additional, Birnbaum, K., additional, Heller, K.-D., additional, Langer, M., additional, Ziring, E., additional, Ishaque, B., additional, Petermann, J., additional, Szabo, Z., additional, Barany, I., additional, Chantes, M. E., additional, Mastrokalos, D., additional, Tibesku, C. O., additional, Pässler, H. H., additional, Jung, D., additional, Matussek, V., additional, Habermeyer, P., additional, Meier, R., additional, Thermann, H., additional, Schratt, H. E., additional, van Griensven, M., additional, van Schoonhoven, J., additional, Djalal, T., additional, Freitag, R., additional, Klüppel, D., additional, Hillrichs, B., additional, Echtermeyer, V., additional, Marlovits, S., additional, Stocker, R., additional, Vécsei, V., additional, Schabus, R. S., additional, Ankin, N. L., additional, Ankin, L. N., additional, Schmeling, A., additional, Kääb, M., additional, Wieling, R., additional, Ito, K., additional, Schütz, M., additional, Trentz, O. A., additional, Uhlschmid, G. K., additional, Weber, S., additional, Graser, C., additional, Fichtel, I., additional, Schlegel, J., additional, Hessmann, M. H., additional, Geiger, F., additional, Wendler, C., additional, Forkl, H., additional, Andress, H. J., additional, Brüning, R., additional, Grubwinkler, M., additional, Lob, G., additional, Weiβer, C., additional, Wagner, R., additional, Weckbach, A., additional, Schädel-Höpfner, M., additional, Giannadakis, K., additional, Fröhlich, J., additional, Dietrich, A., additional, Lill, H., additional, Engel, T., additional, Josten, C., additional, Richter, K., additional, Verheyden, P., additional, Martin, U., additional, and Beckert, M., additional

Published
2000
Full Text
View/download PDF

45. Fatigue and Fracture of Weldments

Author

Zerbst, U., Madia, M., Schork, B., Hensel, J., Kucharczyk, P., Ngoula, D., Tchuindjang, D., Bernhard, J., Beckmann, C., and Publica

Subjects
initial crack size, fatigue strength, short crack propagation, multiple crack propagation, fracture mechanic, weldment
Abstract

This book provides a comprehensive and thorough guide to those readers who are lost in the often-confusing context of weld fatigue. It presents straightforward information on the fracture mechanics and material background of weld fatigue, starting with fatigue crack initiation and short cracks, before moving on to long cracks, crack closure, crack growth and threshold, residual stress, stress concentration, the stress intensity factor, J-integral, multiple cracks, weld geometries and defects, microstructural parameters including HAZ, and cyclic stress-strain behavior. The book treats all of these essential and mutually interacting parameters using a unique form of analysis. This book provides a comprehensive and thorough guide to those readers who are lost in the often-confusing context of weld fatigue. It presents straightforward information on the fracture mechanics and material background of weld fatigue, starting with fatigue crack initiation and short cracks, before moving on to long cracks, crack closure, crack growth and threshold, residual stress, stress concentration, the stress intensity factor, J-integral, multiple cracks, weld geometries and defects, microstructural parameters including HAZ, and cyclic stress-strain behavior. The book treats all of these essential and mutually interacting parameters using a unique form of analysis.

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results