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Effects of Headform Friction on Ejection Mitigation Testing
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 01, 2014 by SAE International in United States
Annotation ability available
Ejection Mitigation testing is now required by the U.S. government through FMVSS 226 . FMVSS 226 contains the requirement of using a linear guided headform in a horizontal impact test into the inflated curtain, or other ejection mitigation countermeasure that deploys in the event of a rollover. The specification provides dimensions for a featureless headform  but there are limited specifications for the headform skin surface condition. In the “Response to Petitions” of the 2011 Final Rule for FMVSS 226 , the NHTSA declined the option to include a headform cleaning procedure. This research presents a case study to quantify the effect of changes in the friction between the headform and curtain on the measured excursion. The study presented here shows that a change in friction between the headform and curtain can affect excursion values by up to 135 millimeters (mm).
|Technical Paper||Curtain Airbag Linear Impact Simulation Method for FMVSS 226 and NCAP Side Impact|
|Technical Paper||A Study for Analysis Technique for Ensuring the Head Injury Criterion and Ejection Mitigation Performance of Curtain Airbag|
CitationHeading, M., Stein, D., and Dix, J., "Effects of Headform Friction on Ejection Mitigation Testing," SAE Technical Paper 2014-01-0533, 2014, https://doi.org/10.4271/2014-01-0533.
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