Determination of Peak Deflections from Human Surrogates using Chestbands in Side Impact Tests

To understand the biomechanics of the human body in motor vehicle environments, physical models including anthropomorphic test devices (ATD) and biological models (postmortem human surrogates) are used, and sled tests are conducted. Deflection is often used as a biomechanical variable to characterize the effects of impact loading and derive injury criteria. The objective of the present study was to evaluate different techniques and recommend a methodology to determine the peak thorax and abdominal deflections from temporal contours using chestbands in oblique lateral impacts. The side impact ATD WorldSID representing human surrogates was positioned on a seat. The seat was rigidly fixed to the platform of an acceleration sled. The oblique load-wall fixed to the sled consisted of separate and adjustable plates to contact the shoulder, thorax, abdomen, and pelvis. Two 59-gage chestbands were wrapped on the thorax and abdomen. Tests were conducted at low, medium, and high velocities (3.4, 6.7, and 7.5 m/s) and three methods, termed the spine-sternum, bilateral, and spine-box, were used to determine the global peak deflection and its angulation. Results indicated that all three methods produced very similar angulations, for all velocity tests, and at both thorax and abdominal regions. However, maximum deflections were the lowest in the spine-sternum, followed by bilateral and spine-box methods, with one exception. Based on the development of deflection contours, locations used in the definitions of the origin, and accuracy in identifying critical locations/points in time-varying contours, results of the present study indicate that the bilateral method is the optimum procedure to determine the oblique peak deflection vector in biomechanical tests.

• Record URL:
  https://doi.org/10.1016/j.medengphy.2012.12.012
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S1350453313000064
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/13504533
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier.
• Authors:
  • Yoganandan, Narayan
  • Humm, John R
  • Pintar, Frank A
  • Maiman, Dennis J
• Publication Date: 2013-8

Language

• English

Media Info

• Media Type: Digital/other
• Features: References;
• Pagination: pp 1181-1187
• Serial:
  • Medical Engineering & Physics
  • Volume: 35
  • Issue Number: 8
  • Publisher: Elsevier
  • ISSN: 1350-4533
  • Serial URL: http://www.sciencedirect.com/science/journal/13504533

Subject/Index Terms

• TRT Terms: Abdomen; Biophysics; Injuries; Occupant kinetics; Side crashes; Thorax
• Subject Areas: Highways; Safety and Human Factors; I84: Personal Injuries;

Filing Info

• Accession Number: 01491840
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 21 2013 11:34AM