Surface Processing Effect on Fatigue Properties of Composite-Bonded Aluminum Alloy

In this paper, the composite patch was prepared by wet spreading method, with which the damaged aluminum alloy specimen was repaired by bonding. The effects of different surface processing and curing modes on the fatigue properties of the specimens were studied. The results show that the surface coa...

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Bibliographic Details
Published in:Strength of materials 2023, Vol.55 (1), p.157-166
Main Authors: Liu, H. D., Dai, J. T., Zhao, P. Z., Su, H. B.
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Aluminum base alloys
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Comparative analysis
Coupling agents
Crack propagation
Fatigue
Fatigue failure
Fatigue life
Fatigue testing machines
Materials
Materials Science
Solid Mechanics
Specialty metals industry
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Summary:In this paper, the composite patch was prepared by wet spreading method, with which the damaged aluminum alloy specimen was repaired by bonding. The effects of different surface processing and curing modes on the fatigue properties of the specimens were studied. The results show that the surface coating coupling agent can significantly improve the fatigue properties of the repaired specimens; compared with unrepaired specimens, the fatigue life was increased by about 6.26 times and compared with uncoated specimens, the fatigue life was increased by 13.2–32.4%. Compared with unrepaired specimens, the fatigue life of repaired specimens can be increased by 6.20 times by heating and pressure curing. The fatigue life can be increased by 7.8–18.5% compared with normal temperature curing and repairing. Finally, the fatigue fracture of the specimen was observed and analyzed by SEM.
ISSN:0039-2316
1573-9325
DOI:10.1007/s11223-023-00510-x