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METHOD OF ARRESTING FATIGUE CRACK GROWTH IN METAL MEMBER, AND FATIGUE CRACK GROWTH-ARRESTED METAL MEMBER
METHOD OF ARRESTING FATIGUE CRACK GROWTH IN METAL MEMBER, AND FATIGUE CRACK GROWTH-ARRESTED METAL MEMBER
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机译:金属构件的疲劳裂纹的止回方法及疲劳裂纹的金属构件的止裂
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摘要
In a method of arresting fatigue crack growth in a metal member, a hole (18) is formed beside a tip portion (14a) of a fatigue crack (14) with respect to a crack extension direction, in a metal member body (12), in which the fatigue crack occurs due to an action of applied cyclic tensile stress. Then, a press-fit object (20) being higher in stiffness than the metal member body (12) and larger in external size than the hole (18) is press-fitted into the hole (18). Compressive stress (C) is made to act on the tip portion (14a) of the fatigue crack (14) from directions lateral to the crack extension direction.
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