Fatigue Tests on Compact-tension Specimens Repaired by CFRP
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Bibliographic Details
| Author(s): |
Yuanpeng Zheng
(Key Laboratory of Performance Evolution and Control for Engineering Structures (Ministry of Education), Tongji University, Shanghai, China; Department of Structural Engineering, Tongji University, Shanghai, China)
Tao Chen (Key Laboratory of Performance Evolution and Control for Engineering Structures (Ministry of Education), Tongji University, Shanghai, China; Department of Structural Engineering, Tongji University, Shanghai, China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 1624-1632 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/nanjing.2022.1624 | ||||
| Abstract: |
Six fatigue tests were conducted to investigate the fatigue behaviour of CFRP-repaired compact- tension specimens (CT specimens), considering the effects of CFRP material type, patch configuration and patch layer numbers. Beach marking technique and digital image correlation (DIC) technology were employed to depict the crack propagation and the strain distribution on the specimens. The differences in fatigue life and fatigue crack growth rates (FCGR) results reveal that CFRP patches can prolong the fatigue life, even tripling the cycle number in a test. There is a salient advantage in double-side repairing compared to its one-side counterpart. However, the CFRP sheet layer number doesn’t guarantee the strengthening efficacy. The specimen repaired by CFRP plate had a mixed failure mode of adhesive layer failure and CFRP debonding. The failure mode of CFRP- sheet repaired specimens was a mix of CFRP debonding, delamination and adhesive layer failure. |
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| Keywords: |
fatigue life digital image correlation (DIC) CFRP Steel Plate compact-tension specimen fatigue crack propagation rate (FCGR)
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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