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本文就冷挤压加工后紧固孔周的残余应力测量问题进行了研究。文中提出了径向切割法以释放欲求剖面的周向残余应力;采用高灵敏度的云纹干涉法测量残余应力释放后引起的附加变形;用载波错位法获得高反差的应变条纹图。
In this paper, the residual stress measurement of the fastening hole after cold extrusion is studied. In this paper, a radial cutting method is proposed to release the residual stress in the circumferential direction of the desired section. The high-sensitivity moire interferometry is used to measure the additional deformation caused by the residual stress release.