Damage Evaluation Based on a Wave Energy Flow Map Using Multiple PZT Sensors
Yaolu Liu,
Ning Hu,
Hong Xu,
Weifeng Yuan,
Cheng Yan,
Yuan Li,
Riu Goda,
Alamusi,
Jinhao Qiu,
Huiming Ning,
Liangke Wu
Affiliations
Yaolu Liu
Department of Mechanical Engineering, Chiba University, Chiba 263-8522, Japan
Ning Hu
Department of Engineering Mechanics, Chongqing University, Chongqing 400044, China
Hong Xu
Mechanical and Electrical Engineering Institute, Beijing University of Chemical Technology, 15 Beisanhuan Dong Lu, Chaoyang District, Beijing 100029, China
Weifeng Yuan
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Cheng Yan
School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane QLD 4001, Australia
Yuan Li
Department of Nanomechanics, Tohoku University, Sendai 980-8579, Japan
Riu Goda
Department of Mechanical Engineering, Chiba University, Chiba 263-8522, Japan
Alamusi
Department of Mechanical Engineering, Chiba University, Chiba 263-8522, Japan
Jinhao Qiu
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Huiming Ning
Department of Mechanical Engineering, Chiba University, Chiba 263-8522, Japan
Liangke Wu
Department of Mechanical Engineering, Chiba University, Chiba 263-8522, Japan
A new wave energy flow (WEF) map concept was proposed in this work. Based on it, an improved technique incorporating the laser scanning method and Betti’s reciprocal theorem was developed to evaluate the shape and size of damage as well as to realize visualization of wave propagation. In this technique, a simple signal processing algorithm was proposed to construct the WEF map when waves propagate through an inspection region, and multiple lead zirconate titanate (PZT) sensors were employed to improve inspection reliability. Various damages in aluminum and carbon fiber reinforced plastic laminated plates were experimentally and numerically evaluated to validate this technique. The results show that it can effectively evaluate the shape and size of damage from wave field variations around the damage in the WEF map.
