Effects of pre-impact swerving/steering on physical motion of the volunteer in the low-speed side-impact sled test

S. Ejima, D. Ito, F. Satou, K. Mikami, Koshiro Ono, Koji Kaneoka, I. Shiina

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

In order to simulate the actual pre-crash condition of a car that occurs when the drivers avoid an accident in an emergency situation, low-speed lateral sled tests on human volunteers were conducted using a sled-mounted rigid seat. It was observed that when the subject's muscles were initially relaxed, Sternoclaidomastoid and Rectus Abdominis started activation at around 100ms after the onset of acceleration and reached its maximum value at around 200-400ms. During this time period, most of the individual body region acceleration responses and restraint system reaction forces also peaked. Furthermore, the lateral flexion of head-neck-torso kinematics was strongly influenced by the muscle activity in the muscle tensed case and the posture-control effect of the lateral flexion due to the muscle tension was around 20-40%. This experiment indicates that muscles can control the occupant's behavior significantly during the low-speed impact, relating to the occupant's posture at the pre-crash phase.

Original languageEnglish
Title of host publication2012 IRCOBI Conference Proceedings - International Research Council on the Biomechanics of Injury
Pages352-366
Number of pages15
Publication statusPublished - 2012
Event2012 International Research Council on the Biomechanics of Injury Conference, IRCOBI 2012 - Dublin
Duration: 2012 Sep 122012 Sep 14

Other

Other2012 International Research Council on the Biomechanics of Injury Conference, IRCOBI 2012
CityDublin
Period12/9/1212/9/14

Fingerprint

Muscle
activation
accident
driver
experiment
Seats
Accidents
Kinematics
Railroad cars
Chemical activation
Experiments
time

Keywords

  • Kinematics
  • Muscle
  • Occupants
  • Pre-crash
  • Side impacts
  • Volunteers

ASJC Scopus subject areas

  • Biomedical Engineering
  • Human Factors and Ergonomics

Cite this

Ejima, S., Ito, D., Satou, F., Mikami, K., Ono, K., Kaneoka, K., & Shiina, I. (2012). Effects of pre-impact swerving/steering on physical motion of the volunteer in the low-speed side-impact sled test. In 2012 IRCOBI Conference Proceedings - International Research Council on the Biomechanics of Injury (pp. 352-366)

Effects of pre-impact swerving/steering on physical motion of the volunteer in the low-speed side-impact sled test. / Ejima, S.; Ito, D.; Satou, F.; Mikami, K.; Ono, Koshiro; Kaneoka, Koji; Shiina, I.

2012 IRCOBI Conference Proceedings - International Research Council on the Biomechanics of Injury. 2012. p. 352-366.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ejima, S, Ito, D, Satou, F, Mikami, K, Ono, K, Kaneoka, K & Shiina, I 2012, Effects of pre-impact swerving/steering on physical motion of the volunteer in the low-speed side-impact sled test. in 2012 IRCOBI Conference Proceedings - International Research Council on the Biomechanics of Injury. pp. 352-366, 2012 International Research Council on the Biomechanics of Injury Conference, IRCOBI 2012, Dublin, 12/9/12.
Ejima S, Ito D, Satou F, Mikami K, Ono K, Kaneoka K et al. Effects of pre-impact swerving/steering on physical motion of the volunteer in the low-speed side-impact sled test. In 2012 IRCOBI Conference Proceedings - International Research Council on the Biomechanics of Injury. 2012. p. 352-366
Ejima, S. ; Ito, D. ; Satou, F. ; Mikami, K. ; Ono, Koshiro ; Kaneoka, Koji ; Shiina, I. / Effects of pre-impact swerving/steering on physical motion of the volunteer in the low-speed side-impact sled test. 2012 IRCOBI Conference Proceedings - International Research Council on the Biomechanics of Injury. 2012. pp. 352-366
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