A multi-delay-and-sum imaging algorithm for damage detection using piezoceramic transducers

[1 ]Key Laboratory for Metallurgical Equipment and Control of Ministry of Education, Wuhan University of Science and Technology, Wuhan, China

[2 ]Smart Materials and Structures Laboratory, Department of Mechanical Engineering, University of Houston, Houston, TX, USA

[3 ]School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian, China