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Detection of high explosive detonation across material interfaces with chirped fiber Bragg gratings

机译:用chi光纤布拉格光栅检测材料界面上的高爆炸力爆炸

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摘要

Measuring detonation wavefront position and velocity changes across material interfaces has been demonstrated using an all-optical chirped fiber Bragg grating approach. An experiment was conducted with a cylindrical rate stick consisting of multiple high explosive (HE) segments. A measurement of detonation position across interfaces of different HE formulations was made for both low and high spatial resolution gratings. The results show the accuracy of measured velocities is increased with the higher resolution gratings. A decaying shock driven into the polymethyl methacrylate (PMMA) segment provided a measure of the minimum internal fiber pressure required for prompt grating destruction and accurate wavefront position measurement. (C) 2015 Optical Society of America
机译:使用全光学chi光纤布拉格光栅方法已证明了测量爆轰波阵面位置和整个材料界面的速度变化的能力。使用由多个高爆炸药(HE)片段组成的圆柱速度标尺进行了实验。针对低空间分辨率和高分辨率空间光栅,测量了不同HE配方界面之间的爆轰位置。结果表明,使用较高分辨率的光栅可以提高测得的速度精度。驱动到聚甲基丙烯酸甲酯(PMMA)段的衰减冲击提供了对迅速破坏光栅和进行准确的波前位置测量所需的最小内部光纤压力的度量。 (C)2015年美国眼镜学会

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