Weisenbach Charles A, Logsdon Katie, Salzar Robert S, Chancey Valeta Carol, Brozoski Fredrick
Injury Biomechanics Division, U.S. Army Aeromedical Research Laboratory, 6901 Farrel Road, Fort Rucker, AL 36362.
Laulima Government Solutions LLC, 12565 Research Pkwy #300, Orlando, FL 32826.
Mil Med. 2018 Mar 1;183(suppl_1):287-293. doi: 10.1093/milmed/usx210.
Military combat helmets protect the wearer from a variety of battlefield threats, including projectiles. Helmet back-face deformation (BFD) is the result of the helmet defeating a projectile and deforming inward. Back-face deformation can result in localized blunt impacts to the head. A method was developed to investigate skull injury due to BFD behind-armor blunt trauma. A representative impactor was designed from the BFD profiles of modern combat helmets subjected to ballistic impacts. Three post-mortem human subject head specimens were each impacted using the representative impactor at three anatomical regions (frontal bone, right/left temporo-parietal regions) using a pneumatic projectile launcher. Thirty-six impacts were conducted at energy levels between 5 J and 25 J. Fractures were detected in two specimens. Two of the specimens experienced temporo-parietal fractures while the third specimen experienced no fractures. Biomechanical metrics, including impactor acceleration, were obtained for all tests. The work presented herein describes initial research utilizing a test method enabling the collection of dynamic exposure and biomechanical response data for the skull at the BFD-head interface.
军事作战头盔可保护佩戴者免受包括弹丸在内的各种战场威胁。头盔背面变形（BFD）是头盔抵御弹丸并向内变形的结果。背面变形可能导致头部局部钝击。开发了一种方法来研究装甲后钝性创伤导致的颅骨损伤。根据现代作战头盔在弹道冲击下的BFD轮廓设计了一个代表性撞击器。使用气动抛射器，在三个解剖区域（额骨、右/左颞顶区域）对三个尸体人类头部标本分别使用代表性撞击器进行撞击。在5焦耳至25焦耳的能量水平下进行了36次撞击。在两个标本中检测到骨折。其中两个标本发生了颞顶骨折，而第三个标本没有骨折。所有测试均获得了包括撞击器加速度在内的生物力学指标。本文介绍的工作描述了利用一种测试方法进行的初步研究，该方法能够收集BFD-头部界面处颅骨的动态暴露和生物力学响应数据。
