Fatigue Life Enhancement of Fillet and Butt Welded Joints after Laser Peening
Fatigue Life Enhancement of Fillet and Butt Welded Joints after Laser Peening
复制标题
激光喷丸后角焊缝和对接焊缝疲劳寿命的提高
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
You
中科院分区：
文献类型：
--
作者：
Y. Sakino;Y. Sano;R. Sumiya;You
激光喷丸在焊接构件的表面引入残余压应力是提高疲劳寿命的有效方法，因为焊接残余拉应力是降低疲劳寿命的最主要因素之一。结构钢广泛用于桥梁、建筑等;然而，激光喷丸对结构钢，特别是焊接区的影响还没有很好地确定。在这项研究中，盒焊接接头的焊接区进行了激光喷丸处理和残余应力进行了检查。此外，疲劳寿命进行了评估盒焊接接头和对接焊接接头与激光喷丸和不。结果表明：（1）激光冲击使角焊缝箱形焊缝区残余应力由拉应力变为压应力。(2)激光喷丸可以显著延长角焊和对焊接头的疲劳寿命，提高接头的疲劳强度。
Laser peening which introduces compressive residual stresses on surfaces is effective in enhancing fatigue lives of welded components, because tensile residual stress due to welding is one of the most prominent factors reducing the fatigue lives. Structural steels are widely used for bridges, buildings, etc.; however, the effects of laser peening on the structural steels are not well established, especially on the welded zones. In this study, the welded zones of a box-welded joint were treated by laser peening and the residual stress was examined. Moreover, fatigue lives were evaluated for box-welded joints and butt welded joints with and without laser peening. Results obtained are summarized as follows: (1) Laser peening resulted in a change in the residual stress from tensile to compressive around box welding zones of a fillet welded rib-plate. (2) Laser peening can dramatically extend the fatigue lives and increase the fatigue strength of fillet and butt welded joints.
激光喷丸处理对脱气铸造铝合金高周疲劳性能的影响
DOI：
--
发表时间：
2007
期刊：
Materials Science and Engineering A 468-470
影响因子：
--
作者：
K. Masaki;Y. Ochi;T. Matsumura;Y. Sano
通讯作者：
Y. Sano
DOI：
10.1016/j.msea.2005.11.017
发表时间：
2006-02-15
影响因子：
6.4
作者：
Sano, Y;Obata, M;Ochi, Y
通讯作者：
Ochi, Y