Slobodnik B A
Aviat Space Environ Med. 1979 Feb;50(2):139-46.
Human tolerance to head impact was assessed by correlating the force levels required to duplicate damage seen in 14 SPH-4 aviator helmets retrieved from U.S. Army helicopter crashes with resulting head injury. Head injury occurred at peak acceleration levels far below 400 G, which is the value currently used by the U.S. Army as the pass-fail criterion in evaluating the impact attenuation performance of prospective aircrew helmets. Concussive head injuries occurred below Severity Index values of 1500 and below Head Injury Criterion values of 1000. These are considered concussive threshold values by the National Operating Committee on Standards for Athletic Equipment and by the Department of Transportation, respectively. Because peak transmitted force was the best estimator of the Abbreviated Injury Scale values assigned to the 14 cases, it may be a more effective criterion to use in the evaluation of helmet impact attenuation performance than is peak G, Severity Index, or Head Injury Criterion.
通过将从美国陆军直升机坠毁事故中找回的14顶SPH - 4飞行员头盔中造成损伤所需的力水平与由此导致的头部损伤进行关联，评估了人体对头部撞击的耐受性。头部损伤发生时的峰值加速度水平远低于400G，而400G是美国陆军目前在评估未来空勤人员头盔的冲击衰减性能时所采用的通过/不通过标准值。在严重程度指数值低于1500且头部损伤标准值低于1000时发生了脑震荡性头部损伤。这些分别被美国国家运动器材标准操作委员会和美国运输部视为脑震荡阈值。由于峰值传递力是这14个案例中所指定的简略损伤量表值的最佳估计指标，因此在评估头盔冲击衰减性能时，它可能是比峰值G、严重程度指数或头部损伤标准更有效的标准。
