Abstract This research demonstrates that fiber Bragg grating (FBG) strain sensors can survive and provide useful strain information when integrated into a woven fabric subjected to ballistic impact testing. In this work, FBGs were integrated into a single-layer, Kevlar® fabric, sensing mat, placed between a 30-layer Kevlar® fabric shoot pack and clay backing material, and then impacted with an 8.23 g, 12.69 mm diameter, steel ball bearing at velocities up to 285 m/s. Three different optical fiber types, with differing fiber coatings and fiber diameters, were tested. The FBG strain response was determined from the full-spectrum FBG response which was interrogated at 100 kHz throughout the impact event. The difference in FBG strain response for the different coatings and fiber diameters were compared. Additionally, the degradation of the coatings after repeated impacts were visually characterized, showing that smaller diameter fibers behaved better with a more elastic coating.

中文翻译：

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用于高速冲击测试的防弹织物中集成光纤布拉格光栅传感器的生存能力

摘要 本研究表明，光纤布拉格光栅 (FBG) 应变传感器在集成到经过弹道冲击测试的机织织物中时，可以继续使用并提供有用的应变信息。在这项工作中，FBG 被集成到单层 Kevlar® 织物传感垫中，放置在 30 层 Kevlar® 织物拍摄包和粘土背衬材料之间，然后用 8.23 克、12.69 毫米直径的钢球撞击轴承速度高达 285 m/s。测试了具有不同光纤涂层和光纤直径的三种不同光纤类型。FBG 应变响应由全谱 FBG 响应确定，该响应在整个撞击事件中以 100 kHz 的频率进行询问。比较了不同涂层和纤维直径的 FBG 应变响应的差异。此外，