Finite-element simulation of residual stresses induced by laser shock peening in TC4 samples structurally similar to a turbine blade
This study is devoted to the investigation of residual stresses distribution (RSD) in a TC4 sample treated with laser shock peening. The study placed special emphasis on analyzing the RSD at the part of the samples structurally similar to a turbine blade, which is more frequently subjected to damage...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2024-01-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/4592/3894 |
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| author | A. Kostina M. Zhelnin A. Vedernikova M. Bartolomei S. Swaroop |
| author_facet | A. Kostina M. Zhelnin A. Vedernikova M. Bartolomei S. Swaroop |
| author_sort | A. Kostina |
| collection | DOAJ |
| description | This study is devoted to the investigation of residual stresses distribution (RSD) in a TC4 sample treated with laser shock peening. The study placed special emphasis on analyzing the RSD at the part of the samples structurally similar to a turbine blade, which is more frequently subjected to damage during service according to the aircraft statistics. Results of simulation showed that low power density of 1.11 GWt/cm2 could not induce compressive residual stress on the surface of a treated object. Furthermore, increasing the overlapping of laser spots does not improve the situation and still fail to induce surface compressive residual stress at a laser intensity of 1.11 GWt/cm2. The compressive stresses occur only with the rise in power density. Reducing the spot size from 3 mm to 1 mm for the power density of 10 GWt/cm2 results in a 20% increase in the magnitude of compressive residual stress in the area of interest. Moreover, applying 35% overlapping further enhances this value. In addition to increasing the magnitude of residual stress, this approach also leads to a more homogeneous RSD of the treated material |
| format | Article |
| id | doaj-art-af96c571df9b44459d64e0f840294906 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-af96c571df9b44459d64e0f8402949062025-02-03T00:39:26ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932024-01-01186711110.3221/IGF-ESIS.67.0110.3221/IGF-ESIS.67.01Finite-element simulation of residual stresses induced by laser shock peening in TC4 samples structurally similar to a turbine bladeA. KostinaM. ZhelninA. VedernikovaM. BartolomeiS. SwaroopThis study is devoted to the investigation of residual stresses distribution (RSD) in a TC4 sample treated with laser shock peening. The study placed special emphasis on analyzing the RSD at the part of the samples structurally similar to a turbine blade, which is more frequently subjected to damage during service according to the aircraft statistics. Results of simulation showed that low power density of 1.11 GWt/cm2 could not induce compressive residual stress on the surface of a treated object. Furthermore, increasing the overlapping of laser spots does not improve the situation and still fail to induce surface compressive residual stress at a laser intensity of 1.11 GWt/cm2. The compressive stresses occur only with the rise in power density. Reducing the spot size from 3 mm to 1 mm for the power density of 10 GWt/cm2 results in a 20% increase in the magnitude of compressive residual stress in the area of interest. Moreover, applying 35% overlapping further enhances this value. In addition to increasing the magnitude of residual stress, this approach also leads to a more homogeneous RSD of the treated materialhttps://www.fracturae.com/index.php/fis/article/view/4592/3894laser shock peeningnumerical simulationtitanium alloyresidual stress |
| spellingShingle | A. Kostina M. Zhelnin A. Vedernikova M. Bartolomei S. Swaroop Finite-element simulation of residual stresses induced by laser shock peening in TC4 samples structurally similar to a turbine blade Fracture and Structural Integrity laser shock peening numerical simulation titanium alloy residual stress |
| title | Finite-element simulation of residual stresses induced by laser shock peening in TC4 samples structurally similar to a turbine blade |
| title_full | Finite-element simulation of residual stresses induced by laser shock peening in TC4 samples structurally similar to a turbine blade |
| title_fullStr | Finite-element simulation of residual stresses induced by laser shock peening in TC4 samples structurally similar to a turbine blade |
| title_full_unstemmed | Finite-element simulation of residual stresses induced by laser shock peening in TC4 samples structurally similar to a turbine blade |
| title_short | Finite-element simulation of residual stresses induced by laser shock peening in TC4 samples structurally similar to a turbine blade |
| title_sort | finite element simulation of residual stresses induced by laser shock peening in tc4 samples structurally similar to a turbine blade |
| topic | laser shock peening numerical simulation titanium alloy residual stress |
| url | https://www.fracturae.com/index.php/fis/article/view/4592/3894 |
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