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METHOD FOR CONTROLLING FATIGUE CRACK PROGRESSION IN METAL MEMBER AND METAL MEMBER HAVING CONTROLLED FATIGUE CRACK PROGRESSION
METHOD FOR CONTROLLING FATIGUE CRACK PROGRESSION IN METAL MEMBER AND METAL MEMBER HAVING CONTROLLED FATIGUE CRACK PROGRESSION
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机译:控制金属构件疲劳裂纹进展的方法及具有受控疲劳裂纹进展的金属构件
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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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