Parametric study on contact sensors for MASW measurement-based interfacial debonding detection for SCCS  

作　　者：Chen Hongbing Pang Xin Gan Shiyu Li Yuanyuan Gokarna Chalise Nie Xin 

机构地区：[1]Research Institute of Urbanization and Urban Safety,School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]Department of Civil Engineering,Tsinghua University,Beijing 100084,China [3]Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116081,China

出　　处：《Earthquake Engineering and Engineering Vibration》2024年第2期331-344,共14页地震工程与工程振动（英文刊）

基　　金：National Natural Science Foundation of China under Grant (Nos.52192662,52020105005,51908320);the Beijing Nova Program under Grant No.20220484012;the Interdisciplinary Research Project for Young Teachers of USTB (Fundamental Research Funds for the Central Universities,FRF-IDRY-22-013);the Key Laboratory for Intelligent Infrastructure and Monitoring of Fujian Province (Huaqiao University,IIM-01-05)。

摘　　要：Steel-concrete composite structures(SCCS)have been widely used as primary load-bearing components in large-scale civil infrastructures.As the basis of the co-working ability of steel plate and concrete,the bonding status plays an essential role in guaranteeing the structural performance of SCCS.Accordingly,efficient non-destructive testing(NDT)on interfacial debondings in SCCS has become a prominent research area.Multi-channel analysis of surface waves(MASW)has been validated as an effective NDT technique for interfacial debonding detection for SCCS.However,the feasibility of MASW must be validated using experimental measurements.This study establishes a high-frequency data synchronous acquisition system with 32 channels to perform comparative verification experiments in depth.First,the current sensing approaches for high-frequency vibration and stress waves are summarized.Secondly,three types of contact sensors,namely,piezoelectric lead-zirconate-titanate(PZT)patches,accelerometers,and ultrasonic transducers,are selected for MASW measurement.Then,the selection and optimization of the force hammer head are performed.Comparative experiments are carried out for the optimal selection of ultrasonic transducers,PZT patches,and accelerometers for MASW measurement.In addition,the influence of different pasting methods on the output signal of the sensor array is discussed.Experimental results indicate that optimized PZT patches,acceleration sensors,and ultrasonic transducers can provide efficient data acquisition for MASW-based non-destructive experiments.The research findings in this study lay a solid foundation for analyzing the recognition accuracy of contact MASW measurement using different sensor arrays.

关 键 词：steel-concrete composite structures(SCCS) interface debonding detection multi-channel analysis of surface waves(MASW) sensor selection comparative experimental study 

分 类 号：TU398.9[建筑科学—结构工程]