箔式镱应力传感器及试验研究

Development of a Ytterbium Foil Stress Sensor and Its Experimental Research

为测量弹药爆炸及武器侵彻等强冲击荷载下岩体及混凝土结构中应力,研制了箔式镱应力传感器。对传感器工作原理进行了分析,研究出了镱敏感元件的加工工艺,合理设计了传感器结构。对传感器进行了试验研究,试验表明传感器具有横向效应小、量程范围宽、过载能力强、频响高、结构简单、使用方便等优点,可广泛应用于强冲击荷载下混凝土或岩石等介质中的应力测试。

In order to measure the stress in the rock and concrete structure under impulsive load during blast of ammunition or penetration of projectile, a ytterbium foil stress sensor was developed. The working principle of the sensor was analyzed, the machining technology of the ytterbium sensing element was developed and the structure of the sensor was reasonably designed. By experimental research, the sensor is testified to have many merits such as low transverse sensitivity coefficient, wide measuring range, great capability of bearing over loading, high frequency response, simple structure, convenience to use, and so on. The sensor can be widely applied to the stress measurement in concrete or rock under shock load.