在我国各种工程技术中,已经广泛使用电阻应变片作为测量应力的工具和测量压力、力矩、位移、加速度等物理量的传感器。绕线式电阻应变片由于电阻丝栅弯头部分将同时感受到各个方向的应变,在平面应力场的测量中将造成一定的误差,使用时须进行适当的 In various engineering technologies in our country, resistance strain gauges have been widely used as tools for measuring stress and sensors for measuring physical quantities such as pressure, torque, displacement and acceleration. Wound resistance strain gauges As the resistance of the electric wire bending part will also feel the strain in all directions, the measurement of the plane stress field will cause some error, the use of appropriate