Finite-element study of residual stress distribution in Ti-6Al-4V alloy treated by laser shock peening with varying parameters
Laser shock peening (LSP) is used to enhance surface quality of the metallic structures by the generation of compressive residual stresses on it. This work studies the effect of the main LSP parameters on residual stress fields by the finite-element method. The specimen under investigation is a squa...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2022-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/3620/3600 |
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| author | A. Kostina M. Zhelnin E. Gachegova A. Prokhorov A. Vshivkov O. Plekhov� S. Swaroop |
| author_facet | A. Kostina M. Zhelnin E. Gachegova A. Prokhorov A. Vshivkov O. Plekhov� S. Swaroop |
| author_sort | A. Kostina |
| collection | DOAJ |
| description | Laser shock peening (LSP) is used to enhance surface quality of the metallic structures by the generation of compressive residual stresses on it. This work studies the effect of the main LSP parameters on residual stress fields by the finite-element method. The specimen under investigation is a square plate with a thickness of 3 mm made of Ti-6Al-4V. The performed analysis enhances understanding of LSP application to structures manufactured from this material and this information can be useful for a choice of optimal peening parameters. The effect of the spot size and shape, the pulse energy, the number of peen layers, overlapping of spots and temporal variation of the mechanical pressure induced by plasma is considered and analyzed. A 3D finite-element model based on the Johnson-Cook constitutive relation is developed and verified by the results of residual stress measurements performed for the LSP-treated samples under different conditions. From the obtained results the following main conclusions can be drawn: pulse energy provides the more significant effect although the resulting residual stresses profile tends to some saturation curve; temporal pressure pulse shape and its total duration also substantially alter the residual stress field; the least significant parameter is the spot shape |
| format | Article |
| id | doaj-art-3c435624aacc463aa5f0b07b792380d8 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2022-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-3c435624aacc463aa5f0b07b792380d82025-01-02T22:44:45ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932022-07-01166141943610.3221/IGF-ESIS.61.2810.3221/IGF-ESIS.61.28Finite-element study of residual stress distribution in Ti-6Al-4V alloy treated by laser shock peening with varying parametersA. KostinaM. ZhelninE. GachegovaA. ProkhorovA. VshivkovO. Plekhov�S. SwaroopLaser shock peening (LSP) is used to enhance surface quality of the metallic structures by the generation of compressive residual stresses on it. This work studies the effect of the main LSP parameters on residual stress fields by the finite-element method. The specimen under investigation is a square plate with a thickness of 3 mm made of Ti-6Al-4V. The performed analysis enhances understanding of LSP application to structures manufactured from this material and this information can be useful for a choice of optimal peening parameters. The effect of the spot size and shape, the pulse energy, the number of peen layers, overlapping of spots and temporal variation of the mechanical pressure induced by plasma is considered and analyzed. A 3D finite-element model based on the Johnson-Cook constitutive relation is developed and verified by the results of residual stress measurements performed for the LSP-treated samples under different conditions. From the obtained results the following main conclusions can be drawn: pulse energy provides the more significant effect although the resulting residual stresses profile tends to some saturation curve; temporal pressure pulse shape and its total duration also substantially alter the residual stress field; the least significant parameter is the spot shapehttps://www.fracturae.com/index.php/fis/article/view/3620/3600laser shock peeningti-6al-4vhole drillingresidual stressfe analysis |
| spellingShingle | A. Kostina M. Zhelnin E. Gachegova A. Prokhorov A. Vshivkov O. Plekhov� S. Swaroop Finite-element study of residual stress distribution in Ti-6Al-4V alloy treated by laser shock peening with varying parameters Fracture and Structural Integrity laser shock peening ti-6al-4v hole drilling residual stress fe analysis |
| title | Finite-element study of residual stress distribution in Ti-6Al-4V alloy treated by laser shock peening with varying parameters |
| title_full | Finite-element study of residual stress distribution in Ti-6Al-4V alloy treated by laser shock peening with varying parameters |
| title_fullStr | Finite-element study of residual stress distribution in Ti-6Al-4V alloy treated by laser shock peening with varying parameters |
| title_full_unstemmed | Finite-element study of residual stress distribution in Ti-6Al-4V alloy treated by laser shock peening with varying parameters |
| title_short | Finite-element study of residual stress distribution in Ti-6Al-4V alloy treated by laser shock peening with varying parameters |
| title_sort | finite element study of residual stress distribution in ti 6al 4v alloy treated by laser shock peening with varying parameters |
| topic | laser shock peening ti-6al-4v hole drilling residual stress fe analysis |
| url | https://www.fracturae.com/index.php/fis/article/view/3620/3600 |
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