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Apr 26, 2012
Monitoring of FRP-Repair Debonding Using OTDR Techniques
Authors: Shuang Hou [email protected], C. S. Cai [email protected], and Jinping Ou [email protected]Author Affiliations
Publication: Earth & Space 2008: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
Debonding failure has been reported as the dominant failure mode for FRP strengthening in flexure. This paper explores a novel debonding monitoring method for FRP strengthened structures by means of OTDR-based fiber optic technology. Interface slip as a key factor in debonding failures will be measured through sensing optic fibers. FRP pulling tests were conducted to verify the proposed monitoring method. It is found that the proposed method is feasible in slip measurement with high sensitivity, and would be cost effective because of the low price of sensors used, which shows its potential for large-scale applications in civil infrastructures, especially for bridges.
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© 2008 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Louisiana State University, Baton Rouge, LA 70803 and Dalian University of Technology, Dalian, 116024, China. E-mail: [email protected]
Louisiana State University, Baton Rouge, LA 70803. E-mail: [email protected]
Dalian University of Technology, Dalian, 116024, China. E-mail: [email protected]
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