A test method based upon a Hybrid-III head and neck assembly that includes measurement of both linear and angular acceleration is investigated for potential use in impact testing of protective headgear. The test apparatus is based upon a twin wire drop test system modified with the head/neck assembly and associated flyarm components. This study represents a preliminary assessment of the test apparatus for use in the development of protective headgear designed to prevent injury due to falls. By including angular acceleration in the test protocol it becomes possible to assess and intentionally reduce this component of acceleration. Comparisons of standard and reduced durometer necks, various anvils, front, rear, and side drop orientations, and response data on performance of the apparatus are provided. Injury measures summarized for an unprotected drop include maximum linear and angular acceleration, head injury criteria (HIC), rotational injury criteria (RIC), and power rotational head injury criteria (PRHIC). Coefficient of variation for multiple drops ranged from 0.4 to 6.7% for linear acceleration. Angular acceleration recorded in a side drop orientation resulted in highest coefficient of variation of 16.3%. The drop test apparatus results in a reasonably repeatable test method that has potential to be used in studies of headgear designed to reduce head impact injury.

中文翻译：

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使用 Hybrid-III 头/颈组件进行坠落防护头盔测试的冲击测试设备的响应

研究了一种基于 Hybrid-III 头颈部组件的测试方法，该方法包括测量线性和角加速度，以用于保护头盔的冲击测试中的潜在用途。该测试设备基于双线跌落测试系统，该系统通过头部/颈部组件和相关的飞臂组件进行了修改。本研究代表了对用于开发旨在防止跌倒造成伤害的防护头带的测试设备的初步评估。通过在测试协议中包含角加速度，可以评估并有意减少加速度的这一分量。提供了标准和降低硬度的颈部、各种砧座、前、后和侧跌落方向的比较，以及设备性能的响应数据。为无保护跌落总结的损伤措施包括最大线性和角加速度、头部损伤标准 (HIC)、旋转损伤标准 (RIC) 和动力旋转头部损伤标准 (PRHIC)。对于线性加速度，多次液滴的变异系数范围为 0.4% 至 6.7%。以侧向下降方向记录的角加速度导致最高的变异系数为 16.3%。跌落测试设备产生了一种合理可重复的测试方法，该方法有可能用于旨在减少头部撞击伤害的头盔研究中。以侧向下降方向记录的角加速度导致最高的变异系数为 16.3%。跌落测试设备产生了一种合理可重复的测试方法，该方法有可能用于旨在减少头部撞击伤害的头盔研究中。以侧向下降方向记录的角加速度导致最高的变异系数为 16.3%。跌落测试设备产生了一种合理可重复的测试方法，该方法有可能用于旨在减少头部撞击伤害的头盔研究中。