Influence of headform mass and inertia on the response to oblique impacts

Current standard headforms used for sport and automotive helmet certification have poor biofidelity in terms of their mass and moments of inertia (MOI) and may not be suitable for evaluating helmet performance in oblique impacts. In this study, a novel inertially correct headform is designed and built and is compared with the HIII 50th percentile male and two standard (EN960:2006) headforms. Oblique impact response of both un-helmeted and helmeted headforms is investigated. This study shows that current standard headforms are unsuitable for oblique impact tests. For example, it has been shown that for helmeted impacts, differences in headform inertia of 98, 81 and 15% result in differences of 71, 68 and 29% in the peak rotational acceleration impact response about the x-, y- and z-axes rotation, respectively. Future certification tests that include oblique impacts will have to use more biofidelic headforms based on an appropriate population.

Record URL:
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/13588265
Supplemental Notes:
- © 2018 Informa UK Limited, trading as Taylor & Francis Group. Abstract republished with permission of Taylor & Francis.
Authors:
- Connor, Thomas A
- Stewart, Matt
- Burek, Roy
- Gilchrist, Michael D
Publication Date: 2019-11

Language

English

Media Info

Media Type: Web
Features: Figures; References;
Pagination: pp 677-698
Serial:
- International Journal of Crashworthiness
- Volume: 24
- Issue Number: 6
- Publisher: Taylor & Francis
- ISSN: 1358-8265
- Serial URL: http://www.tandfonline.com/loi/tcrs20

Subject/Index Terms

TRT Terms: Crash tests; Crash victim simulation; Head; Helmets; Mass; Moments of inertia
Subject Areas: Highways; Safety and Human Factors;

Filing Info

Accession Number: 01719444
Record Type: Publication
Files: TRIS
Created Date: Oct 17 2019 4:09PM