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Dynamic imaging of the temperature field within an energetic composite using phosphor thermography

机译：使用荧光体热成像在能量复合材料中的温度场动态成像

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摘要

An improved understanding of energy localization ("hot spots") is needed to improve the safety and performance of explosives. We propose a technique to visualize and quantify the properties of a dynamic hot spot from within an energetic composite subjected to ultrasonic mechanical excitation. The composite is composed of an optically transparent binder and a countable number of octahydro 1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) crystals. The evolving temperature field is measured by observing the luminescence from embedded phosphor particles and subsequent application of the intensity ratio method. The spatial temperature precision is less than 2% of the measured absolute temperature in the temperature regime of interest (23 degrees C-220 degrees C). The temperature field is mapped from within an HMX-binder composite under periodic mechanical excitation. (c) 2019 Optical Society of America
机译：需要改进对能量定位的理解（“热点”）来提高炸药的安全性和性能。 我们提出了一种技术来可视化和量化动态热点的性质，从而在经受超声机械激发的能量复合材料中。 复合材料由光学透明的粘合剂和可数数量的八烷基1,3,5,7-四硝基-1,3,5,7-四胞嘧啶（HMX）晶体组成。 通过观察来自嵌入磷光体颗粒的发光和随后施加强度比法测量不断的温度场。 空间温度精度小于感兴趣的温度范围内测量的绝对温度的2％（23摄氏度C-220℃）。 在周期性机械激发下，温度场从HMX - 粘合剂复合材料中映射。 （c）2019年光学学会

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