- Title
- Experimental study on repair of steel plate with different damage degrees subject to fatigue loading
- Creator
- Yu, Qian Qian; Zhao, Xiao; Al-Mahaidi, R.; Xiao, Zhigang; Chen, Tao; Gu, Xianglin
- Date
- 2014
- Type
- Text; Conference paper
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/161080
- Identifier
- vital:12342
- Abstract
- Recent research on the use of carbon fibre reinforced polymer (CFRP) materials in steel structures has demonstrated their potential for fatigue crack repair and corresponding convenience in construction. However, most previous tests focused on the specimen with a small notch or slot. There is limited study on the improved fatigue behavior of steel plates with different initial degrees of damage. This paper presents an experimental program on notched steel plates with different initial crack lengths repaired with CFRP laminates. Particular attention was paid to simulate the various initial degrees of damage using multiple lengths of slots, including 2%, 10%, 20%, 30% and 40% of the plate width. CFRP reinforcement with different elastic moduli and different configurations were adopted. The fatigue crack propagation was monitored by the "beach marking" technique and crack propagation gauges. The test results indicated that this retrofitting method was applicable to specimens at all stages of crack propagation to retard the crack propagation and prolong the fatigue life. Increasing the elastic modulus of CFRP laminate and covering the initial cracks could lead to more significant strengthening effects
- Publisher
- International Association for Bridge Maintenance and Safety
- Relation
- 7th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2014 p. 879-884
- Rights
- © 2014 Taylor & Francis Group.
- Rights
- This metadata is freely available under a CCO license
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