Effect of Stress Wave Propagation on Surface Stress Relaxation in 7050 Aluminum Panel Shocked by a Nanosecond Laser | |
Yang YQ(杨玉奇)2,3,4; Qiao HC(乔红超)3,4; Lu Y(陆莹)3,4; Zhao JB(赵吉宾)3,4; Sun BY(孙博宇)3,4; He JQ(何佳琪)1,3,4 | |
刊名 | Journal of Materials Engineering and Performance |
2022 | |
页码 | 1-9 |
关键词 | laser energy stress relaxation stress wave propagation thin panel thickness |
ISSN号 | 1059-9495 |
产权排序 | 1 |
英文摘要 | Integral panel is an important structure to reduce aircraft weight. Nanosecond laser beams can be used for the forming and surface modification in panels. To explore the propagation of laser-induced stress waves and their influence on surface stress relaxation, a simulation model is used to capture the propagation process of stress waves. The results show that the stress wave first decays rapidly, and then the attenuation rate decreases gradually. In the initial propagation stage, the attenuation of the stress wave can be fitted by σx=Ee-kx; then, after propagating a certain distance, the stress wave amplitude is more suitable to σx= Ex-k. During the propagation processing, the stress wave is reflected on the shocked and back surface. A tensile stress wave is formed by the reflection of the incident compressive stress wave, and the value of the stress wave is improved. The stress wave has a great influence on the residual stress distribution in 1mm thin panels. When the stress wave is reflected on the back surface, a stress is induced into the surface. When the stress wave is reflected by the shocked surface, the stress on the surface is relaxed because the incident wave is a tensile wave. Therefore, when a nanosecond laser is used in thin panels, the shock wave has an important influence on the stress distribution, which needs to be considered in engineering applications. |
资助项目 | National Natural Science Foundation of China[51875558] ; NSFC-Liaoning Province United Foundation of China[U1608259] |
WOS关键词 | ALLOY |
WOS研究方向 | Materials Science |
语种 | 英语 |
WOS记录号 | WOS:000759397400004 |
资助机构 | National Natural Science Foundation of China (51875558) ; NSFC-Liaoning Province United Foundation of China (U1608259) |
内容类型 | 期刊论文 |
源URL | [http://ir.sia.cn/handle/173321/30533] |
专题 | 工艺装备与智能机器人研究室 |
通讯作者 | Qiao HC(乔红超); Zhao JB(赵吉宾) |
作者单位 | 1.College of Material Science and Engineering, Shenyang University of Technology, Shenyang 110870, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Institute for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China 4.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China |
推荐引用方式 GB/T 7714 | Yang YQ,Qiao HC,Lu Y,et al. Effect of Stress Wave Propagation on Surface Stress Relaxation in 7050 Aluminum Panel Shocked by a Nanosecond Laser[J]. Journal of Materials Engineering and Performance,2022:1-9. |
APA | Yang YQ,Qiao HC,Lu Y,Zhao JB,Sun BY,&He JQ.(2022).Effect of Stress Wave Propagation on Surface Stress Relaxation in 7050 Aluminum Panel Shocked by a Nanosecond Laser.Journal of Materials Engineering and Performance,1-9. |
MLA | Yang YQ,et al."Effect of Stress Wave Propagation on Surface Stress Relaxation in 7050 Aluminum Panel Shocked by a Nanosecond Laser".Journal of Materials Engineering and Performance (2022):1-9. |
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