引言应力状态试验研究的许多方法之中都广泛采用应变测量法,其中电阻片法获得最广泛的推广.电阻片能够测量由变形开始直到破坏时为止复杂零件之变形.而承受高压设备的壳体,其内壁变形的测量仅能用电阻片法,在这种情况下测量变形具有一些特殊性,电阻片不仅随设备一起变形,而且本身还受 INTRODUCTION Strain measurement is widely used in many methods of stress state testing, including the most widespread use of resistive sheeting, which measures the deformation of complex parts from the onset of deformation until failure, whereas the housing subjected to high pressure equipment , The deformation of the inner wall can only be measured using the resistance sheet method, in which case the measurement of deformation has some particularities, the resistance sheet not only with the device deformation, but also by