Standard study for motorcycle helmet against head injury in craniofacial impacts

L. T. Chang, Chih-Han Chang, G. L. Chang

Research output: Contribution to journalArticle

Abstract

The Chinese National Standard for motorcycle helmet requires the protective performance of helmet against head injuries in accidents. However, the helmet standard does not completely meet the requirements of the riders in the impact-absorbing capacity. This study presents the experimental models to evaluate the impact-absorbing capacity of chin bar and helmet, and establishes two finite element models to analyze the design parameters. The results showed that a chin bar consisted only of plastic shell and comfort foam offers inadequate protection, and a standard shock absorption test of the chin bar is needed to determine the essential capacity for preventing head injuries. The protective performance of the helmet approved from the standard shock absorption test is not sufficient. The testing velocity of 6 m/s and the upper limit of 300 G at the center of the headform are recommended to enhance the essential requirements of the impact-absorbing capacity in the standard. Head Injury Criterion (HIC) can be an evaluating index. To improve the protective performance of the chin bar and helmet, the design of a less-stiff shell and a less-dense liner would provide better protection, but the liner density in the chin bar should be denser than that of used in the helmet.

Original languageEnglish
Pages (from-to)151-158
Number of pages8
JournalChinese Journal of Medical and Biological Engineering
Volume20
Issue number3
Publication statusPublished - 2000

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Motorcycles
Head Protective Devices
Craniocerebral Trauma
Chin
Shock
Foams
Accidents
Plastics
Theoretical Models
Testing

All Science Journal Classification (ASJC) codes

  • Biophysics

Cite this

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Standard study for motorcycle helmet against head injury in craniofacial impacts. / Chang, L. T.; Chang, Chih-Han; Chang, G. L.

In: Chinese Journal of Medical and Biological Engineering, Vol. 20, No. 3, 2000, p. 151-158.

Research output: Contribution to journalArticle

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