Selectable single-mode guided waves for multi-type damages localization of plate-like structures using film comb transducers

Ding, Taotao; Wan, Qiang; Xiang, Yanxun; Qiu, Xunlin; Deng, Mingxi; Xuan, Fu‐Zhen

doi:10.1080/10589759.2022.2071890

Cited by 8 publications

(2 citation statements)

References 49 publications

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“…(2) Fabrication of TSL: at first, Ni precursor solution was prepared as in [22] and dispersed uniformly on the PI film by the stick coating method. Then, DLW method reported in [23] was employed to reduce the precursor at a laser power of 50 mW and a scanning speed of 70 mm s −1 . Following the same steps during SSL fabrication, the temperature sensor was connected to the serpentine interconnect traces.…”

Section: Design and Fabrication Of Lmf-mslmentioning

confidence: 99%

“…By adjusting the geometrical characteristics of comb electrodes, it is able to excite and receive a single mode of guided waves. The comb transducer shape and the mechanism of its modal selection have been described exhaustively in Ding's work [23]. In brief, this single-modal selectivity characteristic of the transducer is related to the geometry of the comb electrode controlled by the finger spacing L finger .…”

Section: Performance Study Of the Flexible Comb Transducermentioning

confidence: 99%

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Laser micro-fabricated multifunctional sensing layer for structural health monitoring

Ding

Xiao

et al. 2023

Smart Mater. Struct.

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Multifunctional sensing layer (MSL) integrated with multiple sensors and transducers has diverse applications in structural health monitoring (SHM). However, current MSLs still suffer from using rigid sensing units and complicated fabrication methods. To address this, a type of MSL integrated with flexible multi-functional sensing units and stretchable interconnectors was developed in this study by a laser-microfabrication (LMF) method with high efficiency and scalability. The flexible strain sensor has a sensitivity of 8.5, a minimum detection limit of 0.01%, and a durability of up to 12,000 cycles. The flexible temperature sensor has a temperature coefficient of resistance up to 2.75×10-3/°C and a response time of 2.5 s. The flexible comb transducer provides a damage detection accuracy of over 90%. Further investigation proves the capability of the MSL for real-time monitoring of pressure vessels. The high efficiency and scalability of the LMF as well as the multi-functional sensing ability pave the potential application of the MSL in SHM.

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Section: Design and Fabrication Of Lmf-mslmentioning

confidence: 99%

Section: Performance Study Of the Flexible Comb Transducermentioning

confidence: 99%

Laser micro-fabricated multifunctional sensing layer for structural health monitoring

Ding

Xiao

et al. 2023

Smart Mater. Struct.

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Evaluation of surface corrosion damage in thin plates by Zero-Group Velocity Lamb waves based on PVDF comb transducers

Guo,

Yin,

Deng

2024

Thin-Walled Structures

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Mode conversion of Lamb waves in a composite phononic crystal plate: Numerical analysis and experimental validation

Ding

Song

Sun

et al. 2022

Journal of Applied Physics

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The mode manipulation of Lamb waves plays an important role in damage detection and identification of damage types, location, and size. In this paper, we propose a composite phononic crystal (PC) plate with antisymmetric and symmetric PCs for realizing mode conversion from A0 to S0 mode of Lamb waves. The theoretical analysis, numerical simulations, and experimental validation are introduced and the mode conversion mechanism of the composite PC plate is systematically investigated. The effect of geometrical parameters on band structures of antisymmetric and symmetric PCs is first discussed. Then multi-physics field simulation models are developed and in-plane displacement fields are obtained in numerical simulations, which shows that the mode conversion is enhanced when the period number of the antisymmetric PC decreases and that of symmetric the PC increases. The composite PC plate specimens are fabricated with precision wire cutting technology for experimental measurements and the self-designed polyvinylidene fluoride (PVDF) comb transducer is used to stimulate the Lamb waves. The experimental results are consistent with the numerical simulations, which demonstrate that the proposed composite PC plate can achieve the mode conversion from A0 to S0 mode of Lamb waves. Our proposed structures have applicable values for the mode manipulation of Lamb waves in damage detection.

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Selectable single-mode guided waves for multi-type damages localization of plate-like structures using film comb transducers

Cited by 8 publications

References 49 publications

Laser micro-fabricated multifunctional sensing layer for structural health monitoring

Laser micro-fabricated multifunctional sensing layer for structural health monitoring

Evaluation of surface corrosion damage in thin plates by Zero-Group Velocity Lamb waves based on PVDF comb transducers

Mode conversion of Lamb waves in a composite phononic crystal plate: Numerical analysis and experimental validation

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