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以缺口件为研究对象 ,根据J积分理论 ,对Dowling法进行了改进 ,并根据疲劳非扩展裂纹的性质 ,给出裂纹萌生尺寸的定义 ,介绍疲劳裂纹萌生尺寸的确定方法
Based on the J-integral theory, Dowling method is improved. According to the nature of fatigue crack growth, the definition of crack initiation size is given. The method of determining the initiation size of fatigue crack is introduced