Dos Santos Arthur Alves, Sorce James, Schonning Alexandra, Bevill Grant
University of North Florida.
J Appl Biomech. 2021 Apr 1;37(2):80-86. doi: 10.1123/jab.2020-0182. Epub 2020 Dec 29.
This study evaluated the performance of 6 commercially available hard hat designs-differentiated by shell design, number of suspension points, and suspension tightening system-in regard to their ability to attenuate accelerations during vertical impacts to the head. Tests were conducted with impactor materials of steel, wood, and lead shot (resembling commonly seen materials in a construction site), weighing 1.8 and 3.6 kg and dropped from 1.83 m onto a Hybrid III head/neck assembly. All hard hats appreciably reduced head acceleration to the unprotected condition. However, neither the addition of extra suspension points nor variations in suspension tightening mechanism appreciably influenced performance. Therefore, these results indicate that additional features available in current hard hat designs do not improve protective capacity as related to head acceleration metrics.
本研究评估了6种市售安全帽设计的性能，这些设计在外壳设计、悬挂点数量和悬挂收紧系统方面存在差异，旨在考察它们在垂直撞击头部时衰减加速度的能力。测试使用了钢、木材和铅丸（类似于建筑工地常见材料）作为撞击材料，重量分别为1.8千克和3.6千克，从1.83米高度掉落至Hybrid III头颈部组件上。与未佩戴安全帽的情况相比，所有安全帽均显著降低了头部加速度。然而，增加额外的悬挂点或改变悬挂收紧机制均未对性能产生显著影响。因此，这些结果表明，当前安全帽设计中的附加功能并不能提高与头部加速度指标相关的防护能力。
