The residual deformation around the hole was measured by digital speckle correlation technique and the relation curves of residual strain at the side of hole vs fatigue life cycles were obtained.

• 再应用数字散斑相关技术测量了不同疲劳循环次数后孔周的残余变形场，并给出了孔边最大残余应变与疲劳循环次数的关系曲线。