SAE Technical Paper Series 1995
DOI: 10.4271/952713
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An Evaluation of Pedal Cycle Helmet Performance Requirements

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Cited by 15 publications
(10 citation statements)
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“…The impact severity was increased beyond the 0.3 m drop tests, as it had been shown that concussive impacts in football occurred with impacts equivalent to a drop test of height about 1.0 m. 3 Increments in impact severity-that is, 0.1 m drop height-ceased when the headform acceleration approached 500 g, and no tests were conducted from drop heights greater than 0.8 m. Headform acceleration of about 500 g exceeds reasonable tolerance levels. [4][5][6][7][8][9] The foam samples were placed over a flat steel impact anvil. Foam test samples were square shaped (300 6 300 mm).…”
Section: Phase 1: Tests On Foam Samplesmentioning
confidence: 99%
“…The impact severity was increased beyond the 0.3 m drop tests, as it had been shown that concussive impacts in football occurred with impacts equivalent to a drop test of height about 1.0 m. 3 Increments in impact severity-that is, 0.1 m drop height-ceased when the headform acceleration approached 500 g, and no tests were conducted from drop heights greater than 0.8 m. Headform acceleration of about 500 g exceeds reasonable tolerance levels. [4][5][6][7][8][9] The foam samples were placed over a flat steel impact anvil. Foam test samples were square shaped (300 6 300 mm).…”
Section: Phase 1: Tests On Foam Samplesmentioning
confidence: 99%
“…Changes, such as those described above, arose from considering the implications of crash investigations on helmet performance. 8,[12][13][14][15][16] Unlike motor vehicle crashes, in typical motorcycle and pedal cycle crashes there are limited witness marks or interpretable vehicle damage patterns from which the head impact biomechanics, that is, the impact velocity, change in velocity or acceleration, can be estimated. Central to debates over helmet performance are the issues of impact severity (velocity, energy and profile of impact surface) and impact type (radial, tangential or oblique).…”
Section: Introductionmentioning
confidence: 99%
“…performance criteria The threshold value for the peak head acceleration D 1 is chosen to be 200 g for both impact energy levels. The use of this seemingly low value is based on a statistical analysis of head impact data [14], which showed that levels of acceleration of 300 g to 400 g currently allowed by helmet standards were too high from the standpoint of injury protection.…”
Section: Selection Of the Threshold Values Of Systemmentioning
confidence: 99%