TY - JOUR
T1 - Advancing measurement of zero-group-velocity Lamb waves using PVDF-TrFE transducers: first data and application to in situ health monitoring of multilayer bonded structures
AU - Liu, Qijian
AU - Li, Yehai
AU - Guan, Ruiqi
AU - Yan, Jiajia
AU - Liu, Menglong
AU - Luo, Guojie
AU - Su, Zhongqing
AU - Qing, Xinlin
AU - Wang, Kai
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This project is supported in part by the Science and Technology Projects of Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM)(No. HRTP-[2022]-26), the National Natural Science Foundation of China (Grant No. 52005493), and in part by Shenzhen Stable Support Grant (Grant No. GXWD20201230155427003-20200731161831019). This project is also supported in part by Hong Kong Research Grants Council via General Research Funds (Grant Nos. 15202820, 15204419).
Publisher Copyright:
© The Author(s) 2022.
PY - 2023/7
Y1 - 2023/7
N2 - Driven by the rapid advancement in manufacturing technologies, engineering structures with complex geometries are increasingly applied in various industries, posing challenges to the applicability and adaptability of existing structural health monitoring methods based on guided ultrasonic waves. To fulfill the characterization of defects in complex structures, a novel approach featuring a conjunction of zero-group-velocity (ZGV) Lamb waves and polarized poly(vinylidenefluoride-co-trifluoroethylene) (PVDF-TrFE) transducers is proposed. In this approach, the PVDF-TrFE solvent is deposited and in situ polarized on the structure surface to form thin and flexible coatings, with which the ZGV waves can be excited efficiently and measured reliably. On this basis, the defect can be characterized by investigating the defect-induced alteration in ZGV wave features. In experimental validations, disbond defects in multilayer bonded structures are evaluated using the ZGV waves measured with fabricated PVDF-TrFE transducers. For the first time, the ZGV waves are measured in a contact and in situ manner. Compared with conventional noncontact measurement of ZGV waves, the proposed approach features a remarkably improved reliability, convenience for narrowband excitation, immunity to measurement uncertainty and capability of in situ monitoring. The proposed approach can advance the ZGV wave-based methods toward the in situ health monitoring and enable the defect evaluation in emerging complex structures.
AB - Driven by the rapid advancement in manufacturing technologies, engineering structures with complex geometries are increasingly applied in various industries, posing challenges to the applicability and adaptability of existing structural health monitoring methods based on guided ultrasonic waves. To fulfill the characterization of defects in complex structures, a novel approach featuring a conjunction of zero-group-velocity (ZGV) Lamb waves and polarized poly(vinylidenefluoride-co-trifluoroethylene) (PVDF-TrFE) transducers is proposed. In this approach, the PVDF-TrFE solvent is deposited and in situ polarized on the structure surface to form thin and flexible coatings, with which the ZGV waves can be excited efficiently and measured reliably. On this basis, the defect can be characterized by investigating the defect-induced alteration in ZGV wave features. In experimental validations, disbond defects in multilayer bonded structures are evaluated using the ZGV waves measured with fabricated PVDF-TrFE transducers. For the first time, the ZGV waves are measured in a contact and in situ manner. Compared with conventional noncontact measurement of ZGV waves, the proposed approach features a remarkably improved reliability, convenience for narrowband excitation, immunity to measurement uncertainty and capability of in situ monitoring. The proposed approach can advance the ZGV wave-based methods toward the in situ health monitoring and enable the defect evaluation in emerging complex structures.
KW - disbond defects
KW - in situ health monitoring
KW - multilayer bonded structure
KW - PVDF-TrFE transducers
KW - Zero-group-velocity waves
UR - http://www.scopus.com/inward/record.url?scp=85142263326&partnerID=8YFLogxK
U2 - 10.1177/14759217221126812
DO - 10.1177/14759217221126812
M3 - Journal article
AN - SCOPUS:85142263326
SN - 1475-9217
VL - 22
SP - 2641
EP - 2650
JO - Structural Health Monitoring
JF - Structural Health Monitoring
IS - 4
ER -