Debonding Detection and Monitoring for CFRP Reinforced Concrete Beams Using Pizeoceramic Sensors.

Clicks: 308
ID: 54053
2019
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Ranked #230 of 812 articles by views in Materials (Basel, Switzerland)

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Abstract
The bonding status between Carbon Fiber Reinforced Polymer (CFRP) and concrete is one of the key issues for the safety of CFPR-reinforced structures, thus it is of great importance to detect the debonding as early as possible. Instead of detecting the debonding which is artificially set at the very beginning, this paper investigates the feasibility of using low-cost piezoceramic sensors to detect and monitor the debonding of CFRP-reinforced concrete beams in situ. For existing debonding detection, a concrete beam reinforced with CFRP sheet was loaded through the three-point bending test till failure to induce debonding between CFRP sheet and the concrete substrate, and piezoceramic sensors were used to detect the existing debonding by analyzing the receiving ultrasonic waves. In addition, the debonding detection results were further compared with and verified by the vision-based strain testing results. For in-situ debonding monitoring, 10 piezoceramic sensors were used as an array to track the wave transmission changes during the loading process of a CFRP-reinforced concrete beam, and the debonding development process was successfully monitored. The test results show that the low-cost piezoceramic sensors are very effective to generate and receive ultrasonic waves, and are capable of detecting the existing debonding and monitoring of the in-situ debonding process as well.
Reference Key
liu2019debondingmaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Liu, Shukui;Sun, Wei;Jing, Hongwen;Dong, Zhaoxing;
Journal Materials (Basel, Switzerland)
Year 2019
DOI
E2150
URL
Keywords
debonding detection cfrp debonding monitoring piezoceramic sensor ultrasonic wave

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