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The method of fatigue damage suppression welded structure, the striking mark forming tool used in the method, and welded structure
The method of fatigue damage suppression welded structure, the striking mark forming tool used in the method, and welded structure
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机译:抑制疲劳损伤的焊接结构的方法,该方法中使用的打击痕形成工具以及焊接结构
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摘要
PROBLEM TO BE SOLVED: To provide a method for suppressing the generation of fatigue damage of a welded structure, which can securely suppress the generation of fatigue damage such as a fatigue crack in the weld portion of the welded structure such as a steel bridge, and a tool for forming an impact trace used therein, and the welded structure.;SOLUTION: In the method for suppressing fatigue damage of the welded structure, using a tool 6 for forming the impact trace on the surface of the base material 1 adjoining the weld bead 3, hammer peening or ultrasonic shock processing is applied to form the impact trace 5. The tool 6 used for forming the impact trace has a planate impact trace formation surface 7 in the front end thereof, which is formed to be flat, and is formed into a circular shape of which the radius is 1.5 mm or more, 3.0 mm or less. By the tool 6 for forming the impact trace, an impact trace 5 of which the maximum depth is 0.03 mm or more, less than 0.50 mm is formed continuously along a weld bead 3 in the zone from the toe 4 of the weld bead 3 to 5 mm in the base material 1 side.;COPYRIGHT: (C)2013,JPO&INPIT
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