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首页> 外文会议>Terahertz Physics, Devices, and Systems IX: Advanced Applications in Industry and Defense >Laminated helmet materials characterization by terahertz kinetics spectroscopy
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Laminated helmet materials characterization by terahertz kinetics spectroscopy

机译：太赫兹动力学光谱表征层压头盔材料

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摘要

High speed acquisition of reflected terahertz energy constitutes a kinetics spectrum that is an effective tool for layered materials' deformation characterization under ballistic impact. Here we describe utilizing the kinetics spectrum for quantifying a deformation event due to impact in material used for Soldier's helmet. The same technique may be utilized for real-time assessment of trauma by measuring the helmet wore by athletes. The deformation of a laminated material (e.g., a helmet) is dependent on the nature of impact and projectile; thus can uniquely characterize the impact condition leading to a diagnostic procedure based on the energy received by an athlete during an impact. We outline the calibration process for a given material under ballistic impact and then utilize the calibration for extracting physical parameters from the measured kinetics spectrum. Measured kinetics spectra are used to outline the method and rationale for extending the concept to a diagnosis tool. In particular, captured kinetics spectra from multilayered plates subjected to ballistic hit under experimental conditions by high speed digital acquisition system. An algorithm was devised to extract deformation and deformation velocity from which the energy received on the skull was estimated via laws of non-relativistic motion. This energy is assumed to be related to actual injury conditions, thus forming a basis for determining whether the hit would cause concussion, trauma, or stigma. Such quantification may be used for diagnosing a Soldier's trauma condition in the field or that of an athlete's.
机译：高速获取反射的太赫兹能量构成了动力学谱，这是在弹道冲击下表征层状材料变形的有效工具。在这里，我们描述了利用动力学谱来量化由于士兵头盔所用材料的撞击而引起的变形事件。通过测量运动员佩戴的头盔，可以将相同的技术用于实时评估创伤。叠层材料（例如头盔）的变形取决于撞击和弹丸的性质。因此，可以基于运动员在撞击过程中接收到的能量来唯一地表征导致诊断程序的撞击条件。我们概述了在弹道冲击下给定材料的校准过程，然后利用校准从测得的动力学谱中提取物理参数。测得的动力学光谱用于概述将概念扩展到诊断工具的方法和原理。特别地，在高速条件下通过高速数字采集系统从多层板捕获的动力学光谱在弹道撞击下受到了冲击。设计了一种算法来提取变形和变形速度，然后通过非相对论运动定律从中估计出头骨上接收的能量。假定该能量与实际伤害情况相关，因此构成确定击打是否会导致脑震荡，外伤或柱头的基础。这种量化可以用于诊断士兵或运动员的外伤状况。

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