This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
An Examination of the Factors that Affect Testing Variation in Pedestrian Head Impact Equipment
Technical Paper
2012-01-0278
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
With many vehicles now achieving high marks in NCAP frontal and side impact, many countries around the world are considering or have already implemented pedestrian impact protocols to help address these types of crashes, due to the incidence rate of pedestrian injuries and fatalities. The leading global protocol put forth by the working party No. 29 (WP29) of the United Nations is the Global Technical Regulation (GTR) [1], which includes testing that simulates a pedestrian's head impacting a vehicle's hood through the use of a free flight head form. In conducting this test, it is important to be aware of the sources of variation inherent in the testing equipment and testing methodology so that steps can be taken to mitigate their influence. Testing facilities that can maintain high standards of repeatability can be relied on for producing valid tests that meet the GTR tolerances as well as maintaining reasonable costs and testing throughput. This paper will present a study of the various factors in the test setup and method that can introduce variation to the head form speed and impact point accuracy. Furthermore, the authors will present a novel design for the impactor arm that dampens the recoil that occurs during the launching of the pedestrian head form to improve the test accuracy and long term durability of the equipment.
Recommended Content
Authors
Topic
Citation
Grattan, P., Dix, J., and Nastovski, J., "An Examination of the Factors that Affect Testing Variation in Pedestrian Head Impact Equipment," SAE Technical Paper 2012-01-0278, 2012, https://doi.org/10.4271/2012-01-0278.Also In
References
- Global Technical Regulation No. 9, Pedestrian Safety, Established in the Global Registry on 12 November 2008
- NHTSA 2006 “Traffic Safety Facts 2005, Pedestrians.” NCSA, DOT HS 810 624
- Whiteside, D. “A Comprehensive Overview of the Pedestrian Protection Requirements and Test Methodology,” SAE Technical Paper 2010-01-1012 2010 10.4271/2010-01-1012
- “Impact Test Fixture” US Pat. App. No. 13/214,755 (filing date Aug. 22, 2011) (Bonathan et al., applicants)