| 光谱学与光谱分析 |
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| Monitoring of Curing Temperature of Pouring Explosive Based on Fiber Bragg Grating |
| ZHANG Chen, WANG Gao*, LIANG Hai-jian, YUAN Jun-ming, CHANG Shuang-jun, LIU Yu-cun, WANG Heng-fei, ZHAO Yu |
| Science and Technology on Electronic Test & Measurement Laboratory, Key Laboratory of Instrumentation Science and Dynamic Measurement, School of Chemical and Environmental Engineering，North University of China，Taiyuan 030051，China |
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Abstract For the first time, we real time measured released reaction heat between the binder and the curing agent in the curing process of cast explosive using fiber Bragg grating. In order to obtain the temperature in the process of pouring explosive casting real time and accurately, we designed the temperature monitoring system based on fiber Bragg grating. Given the risk of explosive component, long curing time and the requirements of constant temperature, a suitable measurement method for direct real-time monitoring has not been found. In recent years, due to its superior characteristics, fiber Bragg grating is widely used in the field of communication and sensing. We will make the collected reflection wavelength to convert real-time temperature displaying, utilizing linear relationship between fiber Bragg grating and temperature. Through WDM technology, seven grating points are written in two optical fibers to measure at the same time, and distribution trend of explosives internal temperature can be displayed in real time by multi-point distributed measurement. The curved design of the sensor not only improves the connection between sensor and jumper, but also benefits to place in oven. The txt data is made to draw a graph using origin software, and the changes in temperature in the curing process are displayed intuitively. The results show that this method is simple and high-precision, and meets the testing requirements of curing temperature of explosives.
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Received: 2014-07-01
Accepted: 2014-10-12
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Corresponding Authors:
WANG Gao
E-mail: wanggao@nuc.edu.cn
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