Laser Shock Processing of thin Al2024-T351 plates for induction of through-thickness compressive residual stresses fields

Ocaña, J.L.; Correa, Carlos A.; Beltrán, Ángel García; Porro, J.A.; Díaz, María Asunción Romero; Ruiz-de-Lara, Leonardo; Peral, David

doi:10.1016/j.jmatprotec.2015.03.030

Cited by 25 publications

(7 citation statements)

References 8 publications

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“…In realistic high-coverage extended treatments, such as the ones presented in this study, the peening direction motivates anisotropy in the residual stress predictions even in isotropic materials. Concretely, higher compressive residual stresses are usually predicted numerically and obtained experimentally along the PD [45]. This effect is also presented in the considered anisotropic alloy, in which results show that the minimum principal stress direction is coincident with the PD.…”

Section: Realistic Modelling Results For Extended Surface High-coverasupporting

confidence: 53%

See 1 more Smart Citation

Integrated Numerical-Experimental Assessment of the Effect of the AZ31B Anisotropic Behaviour in Extended-Surface Treatments by Laser Shock Processing

Angulo

Cordovilla

Beltrán

et al. 2020

Metals

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In recent years, an increasing interest in designing magnesium biomedical implants has been presented due to its biocompatibility, and great effort has been employed in characterizing it experimentally. However, its complex anisotropic behaviour, which is observed in rolled alloys, leads to a lack of reliable numerical simulation results concerning residual stress predictions. In this paper, a new model is proposed to focus on anisotropic material hardening behaviour in Mg base (in particular AZ31B as a representative alloy) materials, in which the particular stress cycle involved in Laser Shock Processing (LSP) treatments is considered. Numerical predictions in high extended coverage areas obtained by means of the implemented model are presented, showing that the realistic material’s complex anisotropic behaviour can be appropriately computed and—much more importantly—it shows a particular non-conventional behaviour regarding extended areas processing strategies.

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Section: Realistic Modelling Results For Extended Surface High-coverasupporting

confidence: 53%

“…This may be caused by the evaporation of the material's surface during the application of successive pulses, leading to removal of already deformed material. This effect is not considered in LSP simulations [25][26][27]32,34,45].…”

Section: Discussionmentioning

confidence: 99%

Integrated Numerical-Experimental Assessment of the Effect of the AZ31B Anisotropic Behaviour in Extended-Surface Treatments by Laser Shock Processing

Angulo

Cordovilla

Beltrán

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…Wagner et al [14] used laser peening, shot peening, and ball-burnishing, respectively, to change the state of stresses in materials, and the results showed that all of these methods could generate compressive residual stresses that reinforce surface properties. Other methods, such as thermal tempering and deep rolling, have also been reported by scholars [15][16][17][18][19][20][21][22][23][24][25][26][27].…”

Section: Geometry Modelmentioning

confidence: 88%

Effect of Surface Texturing on Stresses during Rapid Changes in Temperature

Han

Gong

et al. 2016

Metals

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Abstract:Recently, there has been great interest in the application of the surface texturing method to enhance material surface performance. Material surfaces sometimes experience rapid temperature changes, and the local surface will obviously generate thermal stresses, which may be detrimental to the material structure. In order to understand the relationship between surface texturing and stresses, a numerical approach is used to investigate the effects of surface texturing on stresses. The results show that surface texturing can generate compressive stresses along the normal direction of the surface, and that strong tensional stresses can be formed in the center of a surface at the same time that are beneficial to material surface performance. However, a smooth surface cannot generate these beneficial stresses. In addition, there is an optimum design size with respect to textures, and the most desirable state of stress in a surface layer can be achieved at this size.

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“…Similar to the curves presented in Figure 5(a), predefined stress profiles (dashed lines) along with their returned stress curves from the integral method (solid lines) are plotted in Figure 7(a) for the chosen LSPshaped profiles. [33][34][35] The SF range in the mentioned literature is between 0.2 and 1.0. For our work, which uses one material for the analysis of all profiles, the SF value lies in the range of 0.25 and 0.9, which is comparable to what is found in the literature.…”

Section: Application Of the Methodology To Lsp-shaped Stress Profilesmentioning

confidence: 99%

Effect of elasto-plastic material behaviour on determination of residual stress profiles using the hole drilling method

Chupakhin

Kashaev

Huber

2016

The Journal of Strain Analysis for Engineering Design

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The hole drilling method is a well-known technique for the determination of non-uniform residual stress profiles by measuring relaxation distortions caused by the presence of the hole. The integral method, an inverse calculation technique on which the hole drilling method is based, assumes linear elastic material behaviour and is therefore limited to the measurement of residual stresses below 60% of the yield strength. The aim of this study is to investigate the effects of elastic-plastic material behaviour on the determined non-uniform residual stress profile when the residual stresses exceed the given 60% limit. To this end, compressive residual stress profiles, as they are typically induced by laser shock peening, are investigated using finite element simulations followed by an analysis with the integral method. The obtained results from the analysis are compared to the applied residual stress profiles. An evaluation of the deviation between these two profiles provides detailed insight into the expected error as a function of hole drilling depth and the ratio of residual stress magnitude to yield strength. As an additional benefit of the presented approach, it also provides an indication of the range of depth at which the non-uniform residual stress profile should be corrected to reduce measurement error.

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Laser Shock Processing of thin Al2024-T351 plates for induction of through-thickness compressive residual stresses fields

Cited by 25 publications

References 8 publications

Integrated Numerical-Experimental Assessment of the Effect of the AZ31B Anisotropic Behaviour in Extended-Surface Treatments by Laser Shock Processing

Integrated Numerical-Experimental Assessment of the Effect of the AZ31B Anisotropic Behaviour in Extended-Surface Treatments by Laser Shock Processing

Effect of Surface Texturing on Stresses during Rapid Changes in Temperature

Effect of elasto-plastic material behaviour on determination of residual stress profiles using the hole drilling method

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