镱应力传感器在混凝土中的匹配特性试验研究

Experimental research on matching characteristic of ytterbium stress sensor in concrete

将镱应力传感器埋入混凝土试块内,在霍普金森杆上进行了测试"匹配误差"的冲击试验。试验表明:镱应力传感器在混凝土中的匹配系数的试验值为1.017。扁平式的传感器结构能有效地减小传感器对被测介质应力场的扰动,可广泛应用于弹药爆炸和武器侵彻过程中混凝土或岩石等介质中的冲击应力的测试。

The shock experiment is processed on the Split-Hopkinson pressure bar（SHPB） in order to measure the matching error of the ytterbium stress sensors which are embeded in concrete sample. The experiments show that the matching coefficient of the sensor in concrete is stable and the experimental value is 1. 017. The flatpacked sensor can efficiently reduce stirring to stress field of measured medium, the sensor can be widely applied to the shock stress measurement in concrete or rock under cartridge explosion and weapon penetration.