Damage Evaluation Based on a Wave Energy Flow Map Using Multiple PZT Sensors

Sensors

Yaolu Liu⁷  Ning Hu¹  Hong Xu⁶  Weifeng Yuan²  Cheng Yan³  Yuan Li⁴  Riu Goda⁷  rib-type="author">Alamusi¹7  Jinhao Qiu⁵  Huiming Ning⁷ 

[1] Department of Engineering Mechanics, Chongqing University, Chongqing 400044, China;School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China; E-Mail:;School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane QLD 4001, Australia; E-Mail:;Department of Nanomechanics, Tohoku University, Sendai 980-8579, Japan; E-Mail:;State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; E-Mail:;Mechanical and Electrical Engineering Institute, Beijing University of Chemical Technology, 15 Beisanhuan Dong Lu, Chaoyang District, Beijing 100029, China; E-Mail:;Department of Mechanical Engineering, Chiba University, Chiba 263-8522, Japan; E-Mails:

关键词: nondestructive inspection;    ultrasonic waves;    wave energy flow;    signal processing;    visualization technique;   

DOI  :  10.3390/s140201902

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.