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Fatigue testing of defected steel beams retrofitted using sandwich-layered high and normal modulus CFRP sheets
Citation
Jiao, H and Phan, HB and Zhao, XL, Fatigue testing of defected steel beams retrofitted using sandwich-layered high and normal modulus CFRP sheets, Proceedings of the 6th International Composites Conference, 14-16 November, Monash University, Melbourne, Australia, pp. 1-6. ISBN 978-0-646-58589-5 (2012) [Refereed Conference Paper]
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Abstract
CFRP sheets are extensively used to strengthen defected steel members due to the advantages
of high strength and light weight of CFRP. Among different types of CFRP sheets, high modulus sheets
showed better performance in extending the fatigue life of defected steel elements. It was found that fibre
breakage was the main failure mode for specimens reinforced with high modulus CFRP sheets comparing to
debonding failure in the interface between CFRP and steel for specimens repaired with normal modulus
CFRP. It is generally believed that failure should occur within the adhesive layer in the form of cohesion failure
so that the FRP material can be better utilised. In this study, CFRP sheets with high and normal modulus
were applied in a sandwich layered manner. Fatigue tests were conducted with fatigue life being compared
with those obtained from previous tests. Results showed that failure happened consistently in the interface of
steel and epoxy resin with a fatigue life of around 80% of that strengthened with high modulus CFRP sheets
only.
Item Details
| Item Type: | Refereed Conference Paper |
|---|---|
| Keywords: | fatigue, defected steel beams, high and normal modulus, CFRP sheets |
| Research Division: | Engineering |
| Research Group: | Civil engineering |
| Research Field: | Structural engineering |
| Objective Division: | Construction |
| Objective Group: | Construction materials performance and processes |
| Objective Field: | Metals |
| UTAS Author: | Jiao, H (Dr Hui Jiao) |
| UTAS Author: | Phan, HB (Mr Hai Phan) |
| ID Code: | 81981 |
| Year Published: | 2012 |
| Deposited By: | Engineering |
| Deposited On: | 2013-01-14 |
| Last Modified: | 2018-03-16 |
| Downloads: | 1 View Download Statistics |
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