+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Experimental investigation of the effect of occupant characteristics on contemporary seat belt payout behavior in frontal impacts

Experimental investigation of the effect of occupant characteristics on contemporary seat belt payout behavior in frontal impacts

Traffic Injury Prevention 17(4): 374-380

The goal of this study was to investigate the influence of the occupant characteristics on seat belt force vs. payout behavior based on experiment data from different configurations in frontal impacts. The data set reviewed consists of 58 frontal sled tests using several anthropomorphic test devices (ATDs) and postmortem human subjects (PMHS), restrained by different belt systems (standard belt, SB; force-limiting belt, FLB) at 2 impact severities (48 and 29 km/h). The seat belt behavior was characterized in terms of the shoulder belt force vs. belt payout behavior. A univariate linear regression was used to assess the factor significance of the occupant body mass or stature on the peak tension force and gross belt payout. With the SB, the seat belt behavior obtained by the ATDs exhibited similar force slopes regardless of the occupant size and impact severities, whereas those obtained by the PMHS were varied. Under the 48 km/h impact, the peak tension force and gross belt payout obtained by ATDs was highly correlated to the occupant stature (P =.03, P =.02) and body mass (P =.05, P =.04), though no statistical difference with the stature or body mass were noticed for the PMHS (peak force: P =.09, P =.42; gross payout: P =.40, P =.48). With the FLB under the 48 km/h impact, highly linear relationships were noticed between the occupant body mass and the peak tension force (R(2) = 0.9782) and between the gross payout and stature (R(2) = 0.9232) regardless of the occupant types. The analysis indicated that the PMHS characteristics showed a significant influence on the belt response, whereas the belt response obtained with the ATDs was more reproducible. The potential cause included the occupant anthropometry, body mass distribution, and relative motion among body segments specific to the population variance. This study provided a primary data source to understand the biomechanical interaction of the occupant with the restraint system. Further research is necessary to consider these effects in the computational studies and optimized design of the restraint system in a more realistic manner.

(PDF emailed within 0-6 h: $19.90)

Accession: 057835519

Download citation: RISBibTeXText

PMID: 26376046

DOI: 10.1080/15389588.2015.1088944

Related references

Variations in occupant response with seat belt slack and anchor location during moderate frontal impacts. Traffic Injury Prevention 6(1): 38-43, 2005

Rear seat occupant safety: an investigation of a progressive force-limiting, pretensioning 3-point belt system using adult PMHS in frontal sled tests. Stapp Car Crash Journal 53: 49-74, 2010

Rear seat occupant safety: kinematics and injury of PMHS restrained by a standard 3-point belt in frontal crashes. Stapp Car Crash Journal 52: 295-325, 2009

Rear seat belt accessibility and occupant seat belt use in New York City taxicabs. American Journal of Public Health 88(12): 1878-1878, 1998

A simulation study on the efficacy of advanced belt restraints to mitigate the effects of obesity for rear-seat occupant protection in frontal crashes. Traffic Injury Prevention 16 Suppl 1(): S75-S83, 2015

Influence of seat characteristics on occupant motion in low-speed rear impacts. Accident Analysis & Prevention 32(2): 243-250, March, 2000

An inflatable belt system in the rear seat occupant environment: investigating feasibility and benefit in frontal impact sled tests with a 50(th) percentile male ATD. Annals of Advances in Automotive Medicine. Association for the Advancement of Automotive Medicine. Scientific Conference 54: 111-126, 2016

Protection of rear seat occupants in frontal crashes, controlling for occupant and crash characteristics. Stapp Car Crash Journal 53: 75-91, 2010

Biomechanics of 4-point seat belt systems in frontal impacts. Stapp Car Crash Journal 47: 367-399, 2006

Computational investigation of the effects of knee airbag design on the interaction with occupant lower extremity in frontal and oblique impacts. Traffic Injury Prevention (): 0-0, 2016

Seat belt use laws and occupant crash protection in the usa. American Journal of Public Health 76(12): 1438-1442, 1986

Potential moderating role of seat belt law on the relationship between seat belt use and adverse health behavior. American Journal of Health Behavior 36(1): 44-55, 2012

Rear seat occupant thorax protection in near side impacts. Annals of Advances in Automotive Medicine. Association for the Advancement of Automotive Medicine. Scientific Conference 53: 3-12, 2011

An experimental approach towards the evaluation of a seat belt campaign with an inside view on the psychology behind seat belt use. Transportation Research Part F: Traffic Psychology and Behaviour 14(6): 0-613, 2011

Seat belt use and accident involvement: a comparison of driving behavior before and after a seat belt law. Accident; Analysis and Prevention 25(6): 757-763, 1993