Journal ArticleDOI
Review of Residual Stress Modification Techniques for Extending the Fatigue Life of Metallic Aircraft Components
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In this paper, a review of residual stress-based approaches for extending the fatigue life of aircraft components is presented, including cold expansion, shot peening, laser shock peening and deep rolling.Abstract:
A major challenge for the aircraft industry in the future will be the development of effective strategies for maintaining and extending the service life of aging aircraft fleet. In this context, residual-stress-based approaches for extending the fatigue life of aircraft components are believed to have great potential for providing cost-effective solutions. This paper reviews residual-stress-based life extension techniques and published work on the use of these techniques in aerospace applications. The techniques reviewed include cold expansion, shot peening, laser shock peening, deep rolling, and heating. Comparisons of the various techniques with regard to current applications and limitations are given.read more
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Journal ArticleDOI
Prospects of laser beam welding and friction stir welding processes for aluminum airframe structural applications
TL;DR: In this article, laser beam welding (LBW) and friction stir welding (FSW) are applied to high-strength aluminum alloys used in aircraft industry and displays their advantages compared with the riveting technique regarding structural integrity, weight and material savings.
Journal ArticleDOI
State of the art of Deep Rolling
TL;DR: In this paper, a comparison of Deep Rolling versus other surface treatments has been made, and different processes that can improve the effects of deep rolling, such as heat treatments, are shown, concluding that the pressure of the tool during the process is the most important control parameter for Deep Rolling and that the residual stresses and strain hardening have the greatest influence in terms of fatigue life.
Journal ArticleDOI
Surface integrity and fatigue lives of Ti17 compressor blades subjected to laser shock peening with square spots
Shikun Zou,Wu Junfeng,Yongkang Zhang,Gong Shuili,Guifang Sun,Zhonghua Ni,Cao Ziwen,Zhigang Che,Feng Aixin +8 more
TL;DR: In this paper, the effects of laser shock peening on surface integrity and high cycle fatigue (HCF) vibration fatigue lives of Ti17 compressor blades were analyzed by surface profiles, X-ray diffraction (XRD), three-coordinate measurement and transmission electron microscopy (TEM), respectively.
Journal ArticleDOI
Experimentally validated multi-step simulation strategy to predict the fatigue crack propagation rate in residual stress fields after laser shock peening
TL;DR: In this paper, a multi-step simulation strategy to predict fatigue crack propagation in LSP-induced residual stress fields is proposed and applied, which involves an LSP process simulation, a transfer approach to include the plastic strains in a C(T) specimen model to calculate the residual stresses and an FCP simulation to determine the stress intensity factors.
Journal ArticleDOI
Effect of laser shock peening on bending fatigue performance of AISI 9310 steel spur gear
TL;DR: In this paper, the effect of laser shock peening on bending fatigue performance of AISI 9310 steel spur gear has been investigated by means of finite element modeling, results of which are verified by X-ray diffraction analysis.
References
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Journal ArticleDOI
A literature survey on the stability and significance of residual stresses during fatigue
TL;DR: In this paper, the authors provide a broad and extensive literature survey addressing the stability of surface and near-surface residual stress fields during fatigue, including redistribution and relaxation due to static mechanical load, repeated cyclic loads, thermal exposure and crack extension.
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Laser and shot peening effects on fatigue crack growth in friction stir welded 7075-T7351 aluminum alloy joints
TL;DR: In this article, the influence of shot and laser peening on the fatigue crack growth behavior of friction stir welded (FSW) aluminum alloy (AA) 7075-T7351 sheets was investigated.
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Finite element modelling of shot peening process: Prediction of the compressive residual stresses, the plastic deformations and the surface integrity☆
TL;DR: In this paper, a numerical simulation of the shot peening process using finite element method is presented, where the majority of the controlling parameters of the process have been taken into account.
Journal ArticleDOI
A comprehensive investigation on the effects of laser and shot peening on fatigue crack growth in friction stir welded AA 2195 joints
TL;DR: In this article, the effects of various surface treatment techniques on the fatigue crack growth performance of friction stir welded 2195 aluminum alloy were investigated and the effect of the compressive stresses was deemed responsible for increasing the resistance to fatigue cracks.