Debonding detection for rectangular CFSTs based on controlled acoustic reflection

摘要：

　　The debonding detection technique for concrete-filled steel tubes(CFSTs)is still a challenging problem,especially for rapid detecting of CFSTs in service.A fast and nondestructive testing(NDT)method for rectangular CFSTs interface bonding integrity is proposed.The Giant Magnetostrictive Material(GMM)transducer placed on the outersurface of steel tube generates the controlled acoustic wave under the input of sweep signal.Then the reflection wave is received by the microphone which is set close to the GMM transducer.Based on frequency domain features,debonding status can be obtained from the reflection sound.Different debonding depth and size are designed in experiments to verify the effectiveness of the inspection technique.Experiments results demonstrate that the proposed approach can detect the in service CFSTs interface debonding rapidly and effectively.

关键词： rectangular CFST acoustic reflection debonding detection fast damage identification

作者: Ning Yang Ying Lei

作者单位: Department of Instrumental and Electrical Engineering,Xiamen University,Xiamen,China Department of Civil Engineering,Xiamen University,Xiamen,China

会议类型: 国际会议

会议名称: The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)

会议地点: 青岛

会议语种:英文

页码: 200-208

在线出版日期: 2018-07-22（万方平台首次上网日期，不代表论文的发表时间）