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Svensson, Erik
Publications (4 of 4) Show all publications
Svensson, E., Bertilsson, E., Högberg, D. & Hanson, L. (2011). Anthropometrics and Ergonomics Assessment in the IMMA Manikin (1ed.). In: Vincent Duffy (Ed.), Gavriel Salvendy; Waldemar Karwowski (Ed.), Advances in Applied Digital Human Modeling: . Paper presented at 3rd Applied Human Factors and Ergonomics (AHFE) International Conference, Miami, July 17-20, 2010 (pp. 139-144). Paper presented at 3rd Applied Human Factors and Ergonomics (AHFE) International Conference, Miami, July 17-20, 2010. Boca Raton: CRC Press
Open this publication in new window or tab >>Anthropometrics and Ergonomics Assessment in the IMMA Manikin
2011 (English)In: Advances in Applied Digital Human Modeling / [ed] Vincent Duffy, Boca Raton: CRC Press, 2011, 1, p. 139-144Chapter in book (Refereed)
Abstract [en]

In earlier verification and validation studies for digital Human Modeling Systems (HMSs) in an F-16 cockpit application, the initial positioning and posturing of the manikins were found to be the greatest source of error in calculations of manikin reach and clearance (Oudenhuijzen et al. 2002). The goal for this project was to develop a method to reduce these errors based on "training" the HMSs. In essence, this training enables the manikins to assume realistic postures by employing 3D body scans of real people in an actual F-16 ACES II ejection seat. This was the starting point for defining manikin initial position, and posture during reach, as well as to quantify the effects of the restraint system and the protective equipment in an F-16 cockpit environment. The Safework HMS was chosen as the modeling system to be "trained." Fourteen subjects with a considerable range in body dimensions were selected for the modeling activities in this project. Their scan data were collected under two conditions while seated in the F-16 ACES II ejection seat: 1) wearing stretch shorts (and sports bras for females) to serve as baseline data; and 2) wearing a full pilot cold water immersion ensemble (small subjects only). The resulting subject data were used to produce 15 reach posture libraries for the Safework HMS. These libraries can be considered as a kind of fidelity profile that quantified, and simultaneously accounted for, the effects of the restraint system, protective equipment, and tissue deformation in this seated cockpit environment. The average difference between the small subject reach envelopes and their corresponding manikin envelopes (compared at the radial styloid on the wrist for all 15 reach directions) had an error range of +/ - 7 mm. Hence, the library is considered to be highly accurate and verified for anthropometric accommodation studies on the F-16 when using the HMS Safework and the resulting posture libraries. The positioning accuracy for accommodation tasks was also found to be accurate. Manikin eye location, during positioning in accommodation tasks, lies between +/- 6 mm in the vertical Z direction, and much smaller (+/- 2 to 7 mm) in the horizontal directions.

Place, publisher, year, edition, pages
Boca Raton: CRC Press, 2011 Edition: 1
Keywords
Digital Human Modeling, Ergonomics, Evaluation, Simulation, Work Process, Anthropometry
National Category
Production Engineering, Human Work Science and Ergonomics Information Systems Computer Sciences
Research subject
Technology; User Centred Product Design
Identifiers
urn:nbn:se:his:diva-22530 (URN)10.1201/EBK1439835111-4 (DOI)2-s2.0-85054700373 (Scopus ID)9780429151842 (ISBN)9781439835128 (ISBN)9781439835111 (ISBN)
Conference
3rd Applied Human Factors and Ergonomics (AHFE) International Conference, Miami, July 17-20, 2010
Available from: 2023-05-16 Created: 2023-05-16 Last updated: 2024-03-14Bibliographically approved
Svensson, E., Bertilsson, E., Högberg, D. & Hanson, L. (2010). Anthropometrics and Ergonomics Assessment in the IMMA Manikin. In: Gavriel Salvendy; Waldemar Karwowski (Ed.), Proceedings of the 3rd Applied Human Factors and Ergonomics (AHFE) International Conference: . Paper presented at 3rd Applied Human Factors and Ergonomics (AHFE) International Conference, Miami, July 17-20, 2010. Louisville: AHFE International
Open this publication in new window or tab >>Anthropometrics and Ergonomics Assessment in the IMMA Manikin
2010 (English)In: Proceedings of the 3rd Applied Human Factors and Ergonomics (AHFE) International Conference / [ed] Gavriel Salvendy; Waldemar Karwowski, Louisville: AHFE International , 2010Conference paper, Published paper (Refereed)
Abstract [en]

Digital Human Modeling (DHM) tools are useful for simulating human work and proactively evaluating ergonomic conditions. IMMA (Intelligently Moving Manikin) is a project that aims to develop software that combines digital human modeling and path planning. The work in the IMMA project is divided into a number of work packages that gradually increases the complexity of the problem. This poster paper regards both the functionality for ergonomics assessment and consideration of anthropometric diversity in the DHM tool being developed. Reviews of current DHM tools and interviews with DHM users and ergonomics specialists were done to clarify problems, needs and opportunities when working with anthropometrics and ergonomics evaluations. Interviews showed that simulations and following evaluations are almost solely based on static postures and with few human models. The main reason for this is claimed to be complex and time consuming processes when creating and evaluating simulations. Both the review of current DHM tools and the interviews confirmed that there is an evident need for more time-dependant evaluation methods and a better coverage of the intended users’ diversity. Attained knowledge from the analysis of current DHM tools and interviews are used to create work processes and two specific modules intended to be implemented in the new IMMA DHM tool. Key issues for the modules are ease of use and flexibility. The overall objective with the IMMA DHM system is to offer a tool that support faster and more correct ergonomics analyses.

Place, publisher, year, edition, pages
Louisville: AHFE International, 2010
Keywords
Digital Human Modeling, Ergonomics, Evaluation, Simulation, Work Process, Anthropometry
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Technology
Identifiers
urn:nbn:se:his:diva-4544 (URN)978-0-9796435-4-5 (ISBN)0-9796435-4-6 (ISBN)
Conference
3rd Applied Human Factors and Ergonomics (AHFE) International Conference, Miami, July 17-20, 2010
Available from: 2011-01-05 Created: 2011-01-05 Last updated: 2023-12-27Bibliographically approved
Svensson, E., Bertilsson, E., Högberg, D. & Hanson, L. (2010). Review of the incorporation, utilization and future demands of ergonomic evaluation methods in Digital Human Modelling. In: Proceedings of the 42nd annual Nordic Ergonomic Society Conference: Proactive Ergonomics - implementation of ergonomics in planning of jobs, tasks, systems and environments. Paper presented at 42nd annual Nordic Ergonomic Society Conference, NES2010, Stavanger, Norway, 6th-8th of September, 2010 (pp. D1-6-D1-10).
Open this publication in new window or tab >>Review of the incorporation, utilization and future demands of ergonomic evaluation methods in Digital Human Modelling
2010 (English)In: Proceedings of the 42nd annual Nordic Ergonomic Society Conference: Proactive Ergonomics - implementation of ergonomics in planning of jobs, tasks, systems and environments, 2010, p. D1-6-D1-10Conference paper, Published paper (Refereed)
Abstract [en]

This study reviews assessment methods in DHM tools and explore the utilization of these methods in  industry. Interviews  with  DHM  users  and  ergonomics  specialists  within the Swedish  automotive  industry  showed  that  simulations  and  following  evaluations  are almost  solely  based  on  static  postures.  Integrated  evaluation  tools  in  current  DHM systems are seldom utilized; instead they use company specific evaluation methods. Both the  review  of current  DHM  tools and  the  interviews  confirmed that  there is  an  evident need  for  more  time-dependant  evaluation  methods.  The  results  are  used  to  present  a conceptual DHM module dealing with time-dependant ergonomics assessment. 

National Category
Engineering and Technology
Research subject
Technology
Identifiers
urn:nbn:se:his:diva-4545 (URN)978-82-995747-2-3 (ISBN)
Conference
42nd annual Nordic Ergonomic Society Conference, NES2010, Stavanger, Norway, 6th-8th of September, 2010
Available from: 2011-01-05 Created: 2011-01-05 Last updated: 2023-05-16Bibliographically approved
Bertilsson, E., Svensson, E., Högberg, D. & Hanson, L. (2010). Use of digital human modelling and consideration of anthropometric diversity in Swedish industry. In: Proceedings of the 42nd annual Nordic Ergonomic Society Conference: . Paper presented at 42nd annual Nordic Ergonomic Society Conference, Stavanger, Norway, September 6-8.
Open this publication in new window or tab >>Use of digital human modelling and consideration of anthropometric diversity in Swedish industry
2010 (English)In: Proceedings of the 42nd annual Nordic Ergonomic Society Conference, 2010Conference paper, Published paper (Refereed)
Abstract [en]

This  paper  study  and  clarify  problems,  needs  and  opportunities  when  working  with anthropometric  diversity  in  digital  human  modelling  (DHM)  systems.  A  comparison between  product  development  and  production  development  in  Swedish  automotive industry is made. Interviews with DHM users and ergonomics specialists about their way of working with anthropometric diversity confirmed that simulations are often done with only one or  a  few  human models.  The reason for  this  is  claimed  to  be  time  consuming processes, both at the creation of the human model but mainly when correctly positioning the model in the CAD environment.

National Category
Engineering and Technology
Research subject
Technology; User Centred Product Design
Identifiers
urn:nbn:se:his:diva-4547 (URN)978-82-995747-2-3 (ISBN)
Conference
42nd annual Nordic Ergonomic Society Conference, Stavanger, Norway, September 6-8
Available from: 2011-01-05 Created: 2011-01-05 Last updated: 2020-11-26Bibliographically approved
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