Effects of laser shock processing on the fatigue life of 2024-T62 aluminum alloy

1996 ◽  
Author(s):  
Hongtao Zhang ◽  
Boliang Lu ◽  
Shuren Zhang ◽  
Yaxin Tang ◽  
Chengye Yu
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Life ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing

Numerical Simulation of Fatigue Life of 7050 Aluminum Alloy Processed by Laser Shock Processing

2010 ◽  
Vol 37 (12) ◽  
pp. 3192-3195 ◽  
Author(s):  
张洁 Zhang Jie ◽  
顾祥 Gu Xiang ◽  
祝乐 Zhu Le ◽  
孙爱华 Sun Aihua
Keyword(s):  
Numerical Simulation ◽  
Aluminum Alloy ◽  
Fatigue Life ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
7050 Aluminum Alloy ◽  
Shock Processing

Fatigue Crack Propagation Experiment and Simulation on 7050 Aluminum Alloy

2011 ◽  
Vol 464 ◽  
pp. 560-563
Author(s):  
Xu Dong Ren ◽  
Yong Zhuo Huangfu ◽  
Yong Kang Zhang ◽  
Da Wei Jiang ◽  
Tian Zhang
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Fatigue Life ◽  
Fatigue Crack Growth ◽  
Crack Propagation ◽  
Crack Growth ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
7050 Aluminum Alloy ◽  
Shock Processing

In this paper, an experiment of fatigue crack propagation in 7050 aluminum alloy was presented. Laser shock processing (LSP) is used to shock the crack surface. Compared with the specimen without LSP, the fatigue life after LSP increased greatly. The simulation of the fatigue crack growth in 7050 aluminum alloy is implemented in FRANC2D. Simulating result is in accordance with the result of the experiment well. Laser shock processing increases the fatigue life and reduce fatigue crack growth rate, it has good prospect on the study of crack arrestment.

Effect of Laser Shock Processing (LSP) on the Fatigue Resistance of an Aluminum Alloy

1999 ◽  
Vol 122 (1) ◽  
pp. 104-107 ◽  
Author(s):  
Tang Yaxin ◽  
Zhang Yongkang ◽  
Zhang Hong ◽  
Yu Chengye
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Life ◽  
Polyvinylidene Fluoride ◽  
Surface Hardness ◽  
Resistance Mechanisms ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Fatigue And Fracture ◽  
Before And After ◽  
Shock Processing

The laser shock induced stress wave is described and measured with a polyvinylidene fluoride (PVDF) transducer. A principle for selecting laser parameters is proposed. A small sized laser with a high power is used for Laser Shock Processing (LSP). The fatigue life of the aluminum alloy 2024T62 is greatly improved after LSP. With 95% confidence, the mean fatigue life of LSP specimens is 4.5–9.8 times that of unshocked ones. The fatigue and fracture resistance mechanisms of LSP such as the variation of the surface hardness, the microstructure and the fracture section of specimens before and after LSP are analyzed. [S0094-4289(00)01601-7]

Effects of Sheet Thickness on Residual Stress Distribution by Laser Shock Processing of 7050-T7451 Aluminum Alloy

2011 ◽  
Vol 189-193 ◽  
pp. 3778-3781
Author(s):  
Yin Fang Jiang ◽  
Lei Fang ◽  
Zhi Fei Li ◽  
Zhen Zhou Tang
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Residual Stresses ◽  
Sheet Thickness ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Element Analysis ◽  
Finite Element Software ◽  
Shock Processing

Laser shock processing is a technique similar to shot peening that imparts compressive residual stresses in materials for improved fatigue resistance. Finite element analysis techniques have been applied to predict the residual stresses from Laser shock processing. The purpose of this paper is to investigate of the different sheet thickness interactions on the stress distribution during the laser shock processing of 7050-T7451 aluminum alloy by using the finite element software. The results indicate that the sheet thickness has little effects on the compression stress in the depth of sheet, but great impacts on the reserve side.

Micro-Structural Enhancement Mechanism of LY2 Aluminum Alloy by Means of a Single Laser Shock Processing

2010 ◽  
Vol 37 (10) ◽  
pp. 2662-2666 ◽  
Author(s):  
鲁金忠 Lu Jinzhong ◽  
罗开玉 Luo Kaiyu ◽  
冯爱新 Feng Aixin ◽  
钟俊伟 Zhong Junwei ◽  
孙桂芳 Sun Guifang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Enhancement Mechanism ◽  
Single Laser ◽  
Shock Processing

Experimental Study of Residual Stress Formation Mechanism of 7050 Aluminum Alloy Sheet by Laser Shock Processing

2016 ◽  
Vol 43 (7) ◽  
pp. 0702008
Author(s):  
曹宇鹏 Cao Yupeng ◽  
徐影 Xu Ying ◽  
冯爱新 Feng Aixin ◽  
花国然 Hua Guoran ◽  
周东呈 Zhou Dongcheng ◽  
...  
Keyword(s):  
Residual Stress ◽  
Experimental Study ◽  
Aluminum Alloy ◽  
Alloy Sheet ◽  
Laser Shock ◽  
Aluminum Alloy Sheet ◽  
Laser Shock Processing ◽  
7050 Aluminum Alloy ◽  
Stress Formation ◽  
Shock Processing

Fatigue Life of Materials Strengthened by Laser Shock Processing

2020 ◽  
Vol 40 (1) ◽  
pp. 44-50
Author(s):  
G. Zh. Sakhvadze ◽  
R. Z. Kavtaradze ◽  
T. M. Natriashvili ◽  
G. G. Sakhvadze
Keyword(s):  
Fatigue Life ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing
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