Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading
In this paper, fatigue crack growth of edge crack in 2024 T351 aluminum alloy plate repaired with bonded composite patch under constant and variable amplitude loading (VAL) was predicted. The Al-alloy plate was repaired with symmetric patch “Boron/Epoxy”. Additionally to constant amplitude loading (...
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| Language: | English |
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Gruppo Italiano Frattura
2017-12-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1963 |
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| author | Fatima Zohra Seriari Mustapha Benachour Mohamed Benguediab |
| author_facet | Fatima Zohra Seriari Mustapha Benachour Mohamed Benguediab |
| author_sort | Fatima Zohra Seriari |
| collection | DOAJ |
| description | In this paper, fatigue crack growth of edge crack in 2024 T351 aluminum alloy plate repaired with bonded composite patch under constant and variable amplitude loading (VAL) was predicted. The Al-alloy plate was repaired with symmetric patch “Boron/Epoxy”. Additionally to constant amplitude loading (CAL), the effects of single overload and band overload were investigated for repaired and unrepaired Al-alloy plates. The obtained results confirm the improvement in repair performances by composite patch on fatigue lives and crack growth rates for all applied cycles (CAL and VAL) compared to unrepaired plates. A retardation effect was observed in application of single overload compared to band overload with the same stress ratio (R=0.2) for unpatched plate and characterized by instantaneous delays. However, this retardation effect is increased by the presence of the patch repair which leads to the higher fatigue life. Retardation effect was neglected for lower overload ratio (ORL>1.8). Comparison in fatigue life and crack growth rates under the same overload ratio (ORL=2.4) between repaired and unrepaired plates show the supplementary beneficial effects in combination of overloading and patch repair |
| format | Article |
| id | doaj-art-173b21c1e4ef491a9d4a6c40308aaaad |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2017-12-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-173b21c1e4ef491a9d4a6c40308aaaad2025-01-03T00:40:27ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932017-12-011243Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loadingFatima Zohra Seriari0Mustapha Benachour1Mohamed Benguediab2University of Tlemcen, Ingeniery of Mechanical Systems and Materials Laboratory, TlemcenUniversity of Tlemcen, Ingeniery of Mechanical Systems and Materials Laboratory, TlemcenUniversity of Sidi Bel Abbes, LMPM Laboratory, Sidi Bel AbbesIn this paper, fatigue crack growth of edge crack in 2024 T351 aluminum alloy plate repaired with bonded composite patch under constant and variable amplitude loading (VAL) was predicted. The Al-alloy plate was repaired with symmetric patch “Boron/Epoxy”. Additionally to constant amplitude loading (CAL), the effects of single overload and band overload were investigated for repaired and unrepaired Al-alloy plates. The obtained results confirm the improvement in repair performances by composite patch on fatigue lives and crack growth rates for all applied cycles (CAL and VAL) compared to unrepaired plates. A retardation effect was observed in application of single overload compared to band overload with the same stress ratio (R=0.2) for unpatched plate and characterized by instantaneous delays. However, this retardation effect is increased by the presence of the patch repair which leads to the higher fatigue life. Retardation effect was neglected for lower overload ratio (ORL>1.8). Comparison in fatigue life and crack growth rates under the same overload ratio (ORL=2.4) between repaired and unrepaired plates show the supplementary beneficial effects in combination of overloading and patch repairhttps://www.fracturae.com/index.php/fis/article/view/1963Fatigue crackComposite patch repairVariable amplitude loadingRetardationAl-alloy |
| spellingShingle | Fatima Zohra Seriari Mustapha Benachour Mohamed Benguediab Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading Fracture and Structural Integrity Fatigue crack Composite patch repair Variable amplitude loading Retardation Al-alloy |
| title | Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading |
| title_full | Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading |
| title_fullStr | Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading |
| title_full_unstemmed | Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading |
| title_short | Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading |
| title_sort | fatigue crack growth of composite patch repaired al alloy plates under variable amplitude loading |
| topic | Fatigue crack Composite patch repair Variable amplitude loading Retardation Al-alloy |
| url | https://www.fracturae.com/index.php/fis/article/view/1963 |
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