Influence of specimen thickness on the fatigue behavior of notched steel plates subjected to laser shock peening

Granados-Alejo, V.; Rubio-González, C.; Jiménez, César A. Vázquez; Banderas, J.A.; Gómez-Rosas, G.

doi:10.1016/j.optlastec.2017.12.011

Cited by 32 publications

(15 citation statements)

References 26 publications

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“…e fracture surface for notched and fillet samples is shown in Figures 14 and 15, respectively. e LSP effect changes the fatigue crack initiation zone in Figure 15 is reproduced from Granados-Alejo et al [19]. both samples' geometries from the border in AR samples (Figures 14(a) and 15(a)) at mid-thickness in treated samples (Figures 14(d) and 15(d)).…”

Section: Fracture Surfacementioning

confidence: 86%

“…Several works have demonstrated that both the pulse sequence [24,25] and the coverage area [26] modify the distribution of residual stress in sample edge and the middle of thickness. Further, other geometrical parameters such as the sample thickness also have a significant effect on the distribution of residual stresses as reported in [19,27]. In this work, the same treatment condition was used in both sample geometries.…”

Section: Residual Stress Distributionmentioning

confidence: 90%

“…Peak pressure of 5.21 GPa was obtained according to [23]. e LSP simulation process was simplified to one big laser shot according to [19].…”

Section: Mef Simulationmentioning

confidence: 99%

“…Bergant et al [18] founded that the LSP increases fatigue crack growth rate in 6082-T651 Al alloy due the equilibrium tensile stresses in the center of specimen and notches edge as explained by Correa et al [5,7] through MEF simulation. Granados-Alejo et al [19] analyzed the effect of samples thickness in 2205 DSS, in which it is observed that in thinner samples, higher fatigue life is obtained by LSP. is behavior is explained through the equivalent plastic strain distribution variations associated with the change in thickness of LSP treated samples.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue Life Behavior of Laser Shock Peened Duplex Stainless Steel with Different Samples Geometry

Jiménez

Granados-Alejo²,

Rubio-González

et al. 2019

Advances in Materials Science and Engineering

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Two different stress raiser geometries (fillets and notched) were treated by laser shock peening (LSP) in order to analyze the effect of sample geometry on fatigue behavior of 2205 duplex stainless steel (DSS). The LSP treatment was carried through Nd : YAG pulsed laser with 1064 nm wavelength, 10 Hz frequency, and 0.85 J/pulse. Experimental and MEF simulation results of residual stress distribution after LSP were assessed by hole drilling method and ABAQUS/EXPLICIT software, respectively. The fatigue tests (tensile-tensile axial stress) were realized with stress ratio of R = 0.1 and 20 Hz. A good comparison of residual stress simulation and experimental data was observed. The results reveal that the fatigue life is increased by LSP treatment in the notched samples, while it decreases in the fillet samples. This is related to the residual stress distribution after LSP that is generated in each geometry type. In addition, the fatigue crack growth direction is changed according to geometry type. Both the propagation direction of fatigue crack and the anisotropy of this steel results detrimental in fillet samples, decreasing the number of cycles to the fatigue crack initiation. It is demonstrated that the LSP effect on fatigue performance is influenced by the specimen geometry.

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Section: Fracture Surfacementioning

confidence: 86%

Section: Residual Stress Distributionmentioning

confidence: 90%

“…Peak pressure of 5.21 GPa was obtained according to [23]. e LSP simulation process was simplified to one big laser shot according to [19].…”

Section: Mef Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fatigue Life Behavior of Laser Shock Peened Duplex Stainless Steel with Different Samples Geometry

Jiménez

Granados-Alejo²,

Rubio-González

et al. 2019

Advances in Materials Science and Engineering

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“…LSP is an innovative surface treatment method which has widely been used to enhance the performances and defects of many automobile and other engineering components [1][2][3][4][5]. LSP is capable of improving the surface and mechanical properties with short pulse (ns level) and high peak power laser beam density (GW/cm 2 ) to generate a plasma at high pressure to induce compressive residual stress layer on the surfaces of metallic materials [3,6,7]. Surface is the outermost layer of the material which is in contact with other materials.…”

Section: Introductionmentioning

confidence: 99%

Effects of Laser Shock Peening on Mechanical Properties and Surface Morphology of AA2024 Alloy

Adu-Gyamfi¹

2018

AJMME

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This paper presents the after effect of laser shock peening (LSP) on AA2024 alloy specimen irradiated with the L-Spiral scanning pattern at different pulse energies. The surface morphology indicates an increase in surface roughness after LSP. The X-Ray diffraction analysis of the LSP treated specimens were compared with the untreated specimen. The sin 2 Ψ method of the X-ray diffraction technique indicates an improvement in the magnitude of compressive residual stress distribution after LSP. The hardness profile after LSP also shows substantial increment. The results suggested an improvement in the microstructural structure owing to the ultra-high strain rate deformation and refined grains. The High Score Plus software is used to analyse the crystallite size and microstrain of the alloy treated by different pulse energies.

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Laser shock peening as a post-processing technique for Inconel 718 components manufactured by laser powder bed fusion

Banderas-Hernández,

Rubio-González,

Gómez-Ortega

et al. 2024

Int J Adv Manuf Technol

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Influence of specimen thickness on the fatigue behavior of notched steel plates subjected to laser shock peening

Cited by 32 publications

References 26 publications

Fatigue Life Behavior of Laser Shock Peened Duplex Stainless Steel with Different Samples Geometry

Fatigue Life Behavior of Laser Shock Peened Duplex Stainless Steel with Different Samples Geometry

Effects of Laser Shock Peening on Mechanical Properties and Surface Morphology of AA2024 Alloy

Laser shock peening as a post-processing technique for Inconel 718 components manufactured by laser powder bed fusion

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