部分相干光云纹干涉法测定复合材料连接件应力场

MEASUREMENT OF STRESSES FOR COMPOSITE JOINTS USING THE MOIRE INTERFEROMETRY OF PARTIAL COHERENT LIGHT

介绍采用部分相干光云纹干涉法测定复合材料单销钉连接件的位移场，从位移云纹图求得应变场和应力场。给出过销钉孔心水平截面上的应变和应力分布及应力集中系数。通过静力平衡所得误差在６％以内。

The moire interferometry of partial coherent light is applied to measure the displacement field for composite joints with a pinhole. The moire pattern is used to determine the strain and stress on the horizontal section through the pinhole centre. The relative error of the experiment results is less than 6%. This research demonstrates that the moire interferometry of partial coherent light is an efficient experimental technique for the strain and stress measurement of composite joints.