Fatigue strength improvement of 5083 H11 Al-alloy T-welded joints by shot peening: experimental characterization and predictive approach

Sidhom, Naziha; Laamouri, Adnen; Fathallah, Raouf; Braham, C.; Lieurade, H. P.

doi:10.1016/j.ijfatigue.2005.02.001

Cited by 97 publications

(53 citation statements)

References 21 publications

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“…1,2) Each piece of shot striking the material acts as a tiny peening hammer, imparting to the surface a small indentation which is the result of local plastic deformation on the surface. 3) Since the plastically stretched surface layer wants to expand and the adjacent elastically responding material around and below the impact restrains the expansion, therefore, a compressive residual stress field is generated in the near surface layer.…”

Section: Introductionmentioning

confidence: 99%

Residual Stress Relaxation of Shot Peened Deformation Surface Layer on S30432 Austenite Steel under Applied Loading

Zhan

Jiang

2012

Mater. Trans.

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The relaxation of residual stress in shot peened surface layer on S30432 austenite steel under static and cyclic loading was investigated. The results revealed that the compressive residual stresses were relaxed under applied tensile stress. The relaxation of residual stresses in longitudinal direction was more obvious than that in transverse direction. And when applied stress was beyond the yield strength of the materials, the relaxation of the compressive residual stress was drastic. Under cyclic loading, the results showed that the relaxation behavior was determined by the applied loading and the number of cycles. And the fast relaxation of the compressive residual stress took place in the first few cycles then became stable gradually. Finally, a model was used to quantitatively predict the compressive residual stress under cyclic loading with different applied tensile stresses.

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Section: Introductionmentioning

confidence: 99%

Residual Stress Relaxation of Shot Peened Deformation Surface Layer on S30432 Austenite Steel under Applied Loading

Zhan

Jiang

2012

Mater. Trans.

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“…), superficial defects such as overlaps, scales, micro-cracks and surface roughness imperfections may occur [1][2][3][4]. As a result, the strength of the treated part may be significantly decreased [5,6]. To ensure a better resistance to fatigue and stress corrosion, the quantitative relationships between these parameters and residual stress characteristics must be established.…”

Section: State Of the Artmentioning

confidence: 99%

Finite element modelling of shot peening process- A progress overview

Yang

Wan

Zhang

2009

Int. J. Simul. Multidisci. Des. Optim.

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-It is very significant to investigate the shot peening mechanism in ensuring a good resistance to fatigue and stress corrosion. This paper reviews the recent advancements in shot peening process. Emphasis is put on the application of numerical simulation techniques and finite element method in residual stress prediction during shot peening process. Different methods related to shot peening modelling and prediction of plastic deformation and surface integrity are reviewed. Some key issues such as algorithms and simulation procedures are discussed.

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“…The stabilized residual stress allows explaining the mechanisms of initiating and growth of the fatigue cracks in several cases of mechanical component damage. In addition, the introduction of the residual stress stabilized state in multi-axial fatigue criteria improves their predictive aptitude [5,6]. That is why, it is imperative to follow the stability of an initial distribution of residual stress for reporting the premature failures and to assess improvements obtained by the superficial treatments [5].The experimental evaluation of residual stress profiles evolution during cyclic loading is expensive and leads to the destruction of many specimen.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Cyclic Residual Stress Relaxation by Modeling Approach

Moussa¹,

Sidhom²,

Sidhom³

et al. 2014

AMR

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Abstract.A new method for prediction of residual stress relaxation under cyclic loading has been developed and implemented in the finite element software Abaqus. The calculated profiles were validated by experimental measurements using X-ray diffraction method. This validated approach is afterward used to investigate the effect of loading path and initial residual stress characteristics on the kinetics of relaxation and the stabilized profile for both cyclic softening and cyclic hardening materials.

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Fatigue strength improvement of 5083 H11 Al-alloy T-welded joints by shot peening: experimental characterization and predictive approach

Cited by 97 publications

References 21 publications

Residual Stress Relaxation of Shot Peened Deformation Surface Layer on S30432 Austenite Steel under Applied Loading

Residual Stress Relaxation of Shot Peened Deformation Surface Layer on S30432 Austenite Steel under Applied Loading

Finite element modelling of shot peening process- A progress overview

Prediction of Cyclic Residual Stress Relaxation by Modeling Approach

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