Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy
In this paper, numerical investigation was carried out to quantify the effect of the cold expansion on fatigue crack initiation in Aluminium alloy. The improvement in fatigue initiation life of specimen after the cold expansion process was investigated with the drilled hole of 2024 T351 Aluminium al...
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Gruppo Italiano Frattura
2018-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2030 |
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| author | Mohamed El Habiri Mustapha Benachour Nadjia Benachour |
| author_facet | Mohamed El Habiri Mustapha Benachour Nadjia Benachour |
| author_sort | Mohamed El Habiri |
| collection | DOAJ |
| description | In this paper, numerical investigation was carried out to quantify the effect of the cold expansion on fatigue crack initiation in Aluminium alloy. The improvement in fatigue initiation life of specimen after the cold expansion process was investigated with the drilled hole of 2024 T351 Aluminium alloy plate. The 4.6 % in degree of expansion is applied witch is associated with the effect of friction (µ=0.2). Residual stress field is determined using 3D Finite Element Analysis and shows the presence of compressive residual stress around the hole. The results showed a high level of compressive residual stress in mild and exit face of hole. Local strain approach is applied in evaluation of fatigue initiation lives under Afgrow environment code. Fatigue initiation lives are improved by the presence of compressive residual and comparatively to the drilled hole. Moreover, increasing in stress ratio, increases the fatigue initiation lives with and without the presence of compressive residuals stresses |
| format | Article |
| id | doaj-art-b5aab76cc2224302af0eda7d27a2b73b |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2018-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-b5aab76cc2224302af0eda7d27a2b73b2025-01-03T00:39:59ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932018-09-011246Effect of cold expansion on improving of fatigue initiation life in Aluminium alloyMohamed El Habiri0Mustapha Benachour1Nadjia Benachour2University of Tlemcen, Ingeniery of Mechanical Systems and Materials Laboratory, Tlemcen (Algeria) Faculty of Technology, Mechanical Engineering DepartmentIS2M Laboratory, University of TlemcenUniversity of Tlemcen, Ingeniery of Mechanical Systems and Materials Laboratory, Tlemcen (Algeria)In this paper, numerical investigation was carried out to quantify the effect of the cold expansion on fatigue crack initiation in Aluminium alloy. The improvement in fatigue initiation life of specimen after the cold expansion process was investigated with the drilled hole of 2024 T351 Aluminium alloy plate. The 4.6 % in degree of expansion is applied witch is associated with the effect of friction (µ=0.2). Residual stress field is determined using 3D Finite Element Analysis and shows the presence of compressive residual stress around the hole. The results showed a high level of compressive residual stress in mild and exit face of hole. Local strain approach is applied in evaluation of fatigue initiation lives under Afgrow environment code. Fatigue initiation lives are improved by the presence of compressive residual and comparatively to the drilled hole. Moreover, increasing in stress ratio, increases the fatigue initiation lives with and without the presence of compressive residuals stresseshttps://www.fracturae.com/index.php/fis/article/view/2030Fatigue crack initiationCold expansionCompressive residual stressStress ratioAluminium alloy |
| spellingShingle | Mohamed El Habiri Mustapha Benachour Nadjia Benachour Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy Fracture and Structural Integrity Fatigue crack initiation Cold expansion Compressive residual stress Stress ratio Aluminium alloy |
| title | Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy |
| title_full | Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy |
| title_fullStr | Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy |
| title_full_unstemmed | Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy |
| title_short | Effect of cold expansion on improving of fatigue initiation life in Aluminium alloy |
| title_sort | effect of cold expansion on improving of fatigue initiation life in aluminium alloy |
| topic | Fatigue crack initiation Cold expansion Compressive residual stress Stress ratio Aluminium alloy |
| url | https://www.fracturae.com/index.php/fis/article/view/2030 |
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