| Subsection method of fatigue design for welded joints treated by ultrasonic peening |
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| 作者姓名： | 王婷 王东坡 霍立兴 张玉凤 |
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| 作者单位： | Welding Institute, Tianjin University, Tianjin, 300072 |
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| 摘 要： | Concerning the notable difference between the S-N curve slope of welded joints treated by ultrasonic peening treatment （UPT） and that of as-welded joints, the subsection method is put forward for fatigue design of welded joints treated by UPT, using the design method of nominal S-N curves. Results show that, in medium life zone, strength grade of the fatigue design curves for UPT welded joints is two grades higher than that for as-welded joints. Furthermore, in medium life zone, strength grade of the fatigue design curves for UPT welded joints is three grades lower than that in long life zone. Conclusion of the comparison is that as for different joint types in different life zones, fatigue design should be processed according to different S-N curves respectively.
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| 关 键 词： | 焊接接头 疲劳强度 喷丸硬化 超声波 |
Subsection method of fatigue design for welded joints treated by ultrasonic peening |
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| Wang Ting,Wang Dongpo,Huo Lixing,Zhang Yufeng.Subsection method of fatigue design for welded joints treated by ultrasonic peening[J].China Welding,2006,15(2):25-30. |
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| Authors: | Wang Ting Wang Dongpo Huo Lixing Zhang Yufeng |
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| Abstract: | Concerning the notable difference between the S-N curve slope of welded joints treated by ultrasonic peening treatment (UPT) and that of as-welded joints, the subsection method is put forward for fatigue design of welded joints treated by UPT, using the design method of nominal S-N curves. Results show that, in medium life zone, strength grade of the fatigue design curves for UPT welded joints is two grades higher than that for as-welded joints. Furthermore, in medium life zone, strength grade of the fatigue design curves for UPT welded joints is three grades lower than that in long life zone. Conclusion of the comparison is that as for different joint types in different life zones, fatigue design should be processed according to different S-N curves respectively. |
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| Keywords: | welded joints fatigue strength fatigue design ultrasonic peening |
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