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| Effects of Composite Patching on the Mechanical Properties of the Corroded Aluminium Plates |
| Received:August 30, 2014 Revised:December 15, 2014 |
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| DOI：10. 7643 / issn. 1672-9242. 2014. 06. 010 |
| KeyWord:composite repair aluminum alloy corrosion static fatigue finite element analysis |
| Author | Institution |
| WANG Zun |
Beijing Aeronautical Technology Research Center, Beijing , China |
| ZHANG Yi-shan |
Beijing Aeronautical Technology Research Center, Beijing , China |
| XUE Jun |
Beijing Aeronautical Technology Research Center, Beijing , China |
| CHEN Qun-zhi |
Beijing Aeronautical Technology Research Center, Beijing , China |
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| Abstract: |
| Objective To study the effects of adhesively bonded composite patching on the static strength and fatigue life of corroded aluminum plates. Methods Specimens were designed and fabricated to simulate corroded aluminum plates. The specimens were repaired by adhesively bonded composite patches. The effects of composite patching on the mechanical properties of the specimens were studied by finite element analysis (FEA) method and mechanical test. Results The FEA results showed that the stress concentration in the repaired specimen was greatly reduced. The static and fatigue data indicated that there was a 45. 9% increase in the fracture load of specimen type I, and that the fatigue life was multiplied 10. 3 times after the composite repair. The fracture load of repaired specimen type II increased 11. 4% , and the fatigue life was 4. 6 times longer than that of the unrepaired specimen. Conclusion Adhesively bonded composite patching was proved to be an effective method to repair corroded aircraft aluminum structures. |
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