Evaluation of bond properties of degraded CFRP-strengthened double strap joints
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Description
The application of CFRP has become a popular strengthening technique for retrofitting of metallic structures. However, knowledge is very limited on the durability of CFRP composites under different environmental conditions. This paper presents the outcomes of a research program on the bond characteristics and environmental durability of degraded CFRP-strengthened steel plate double strap joints. Investigations were carried out on failure mode, ultimate load, joint strength, effective bond length and the effect of embedded GFRP layers for double strap joints. Shear stress-slip curves were developed for degraded CFRP-steel composite using the experimentally measured strain data. Results show that the failure modes and joint capacities are highly dependent on the number of CFRP layers utilised in the composite systems under environmental conditioning. The use of embedded GFRP layers can improve the long-term durability of the composite system. However, optimum structural properties could not be achieved using embedded GFRP as the innermost layer. The bond-slip responses for degraded CFRP double strap joints were shown to have an approximately bilinear relationship. Keywords CFRP; double strap joints; durability; deterioration; bond-slip
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| ID Code: | 105848 | ||||
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| Item Type: | Contribution to Journal (Journal Article) | ||||
| Refereed: | Yes | ||||
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| Measurements or Duration: | 12 pages | ||||
| DOI: | 10.1016/j.compstruct.2017.04.015 | ||||
| ISSN: | 0263-8223 | ||||
| Pure ID: | 33217654 | ||||
| Divisions: | Past > QUT Faculties & Divisions > Science & Engineering Faculty | ||||
| Copyright Owner: | Consult author(s) regarding copyright matters | ||||
| Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||||
| Deposited On: | 18 Apr 2017 22:59 | ||||
| Last Modified: | 27 Jun 2024 19:03 |
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