ABSTRACT
In the CFRP bonded repair of steel members, the stress in the steel members is transmitted to the CFRP by the adhesive layer. The debonding of the CFRP should be prevented to sustain the repair effect. Therefore, early detection of CFRP debonding is necessary for the CFRP bonded repair of steel members. This study conducted debonding tests on CFRP bonded steel plates using strain gauges and installed AE sensors. Consequently, elastic waves were detected by the AE sensor at an earlier stage than debonding detection by strain gauges. The position of elastic wave generation during debonding was determined by the AE, and the debonding propagation behavior was compared with that given by the energy release rate. The results indicated that the two trends were almost identical.
