A basic study for application of laser peening to large-scale steel structure
A basic study for application of laser peening to large-scale steel structure
复制标题
激光喷丸在大型钢结构中应用的基础研究
DOI：
10.1080/09507116.2014.921079
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发表时间：
2016
影响因子：
--
通讯作者：
You
中科院分区：
文献类型：
--
作者：
Y. Sakino;Kenji Yoshikawa;Y. Sano;R. Sumiya;You
激光喷丸可以在表面引入压缩残余应力，因此可以有效地提高疲劳强度。在这项研究中，我们进行了激光喷丸在空气中与水膜形成的喷嘴，并检查是否沿沿着厚度分布的残余应力是不同的，在我们以前的研究中所取得的激光喷丸在水中。为了发展一种对大型结构进行激光喷丸的简单方法，我们还评估了当脉冲能量降低时产生的残余应力和疲劳寿命。压缩残余应力相当于激光喷丸后，在水中观察到的，在战斗型激光喷丸的幅度和深度。随着脉冲能量的降低，残余压应力深度有明显减小的趋势，疲劳寿命也有降低的趋势。结果表明，残余压应力的深度和表面残余应力的大小对焊接结构的疲劳寿命有很大的影响。
Laser peening can introduce compressive residual stress to the surface and therefore is effective in enhancing fatigue strength. In this study, we conducted laser peening in air with a water film formed by a nozzle and examined whether the distribution of residual stress along the thickness was different from that achieved by laser peening in water in our previous studies. We also assessed the resultant residual stress and fatigue life when the pulse energy was reduced for developing a simple method to conduct laser peening on large structures. Compressive residual stress equivalent to that observed after laser peening in water was obtained in nozzle-type laser peening in terms of magnitude and depth. With the reduction of pulse energy, it was observed that the depth of the compressive residual stress tended to decrease significantly and the fatigue life also tended to reduce. The results indicate that the depth of the compressive residual stress has a considerable effect on the fatigue life of welded structures as well as the magnitude of the surface residual stress.
通过脱气处理铸造铝合金的喷丸处理提高疲劳强度
DOI：
--
发表时间：
2006
期刊：
International Journal of Modern Physics B 20・25,26,27
影响因子：
--
作者：
Y.Ochi;K.Masaki;T.Matsumura;Y.Kumagai;T.Hamaguchi;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