Development of a low frequency shear horizontal piezoelectric transducer for the generation of plane SH waves

Boivin, Guillaume; Viens, Martin; Bélanger, Pierre

doi:10.1063/1.4940491

Cited by 16 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The amplitude of Lamb waves can be reduced by optimizing the geometry of thickness-shear type piezoelectric patch. 8 Unfortunately, the first resonance frequency of the d 9 but this mode cannot appear in conventional piezoelectric ceramics because of its transversally isotropic symmetry. Recently, Zhou et al successfully generated and received the SH0 waves in an aluminum plate using the 36 d type PMN-PT patches.…”

Section: Introductionmentioning

confidence: 99%

Excitation of fundamental shear horizontal wave by using face-shear (d36) piezoelectric ceramics

Miao

Dong

2016

Journal of Applied Physics

View full text Add to dashboard Cite

The fundamental shear horizontal (SH0) wave in plate-like structures is extremely useful for non-destructive testing (NDT) and structural health monitoring (SHM) as it is non-dispersive.However, currently the SH0 wave is usually excited by electromagnetic acoustic transducers and PZT-5H ceramics via lateral compression under elevated temperature. It was found that when bonded on a 1 mm-thick aluminum plate, the 36 d type PZT-4 exhibited better face-shear performance than PZT-5H. We then successfully excite SH0 wave in the aluminum plate using a face-shear PZT-4 square patch and receive the wave using a face-shear PMN-PT patch. The frequency response and directionality of the excited SH0 wave were also investigated. The SH0 wave can be dominate over the Lamb waves (S0 and A0 waves) from 160 kHz to 280 kHz. The wave amplitude reaches its maxima along the two main directions (0° and 90°). The amplitude can keep over 80% of the maxima when the deviate angle is less than 30°, while it vanishes a) Author to whom all correspondence should be addressed, Email: lifaxin@pku.edu.cn 2 quickly at the 45° direction. The excited SH0 wave using piezoelectric ceramics could be very promising in the fields of NDT and SHM.

show abstract

Section: Introductionmentioning

confidence: 99%

Excitation of fundamental shear horizontal wave by using face-shear (d36) piezoelectric ceramics

Miao

Dong

2016

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…To optimise the signal-to-noise ratio of the in-plane poled thickness-shear d 15 mode piezoelectric, Niu et al [72,73] superimposed multiple ring transducers. Boivin et al [74] found that the unwanted mode can be restrained by increasing the transducer length. However, polarising a longer piezoelectric transducer is more difficult.…”

Section: Piezoelectric Torsional Transducer Arraymentioning

confidence: 99%

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

Fang

2023

Smart Mater. Struct.

View full text Add to dashboard Cite

An axisymmetric guided wave mode is excited independently within a circular tube structure to reduce the complexity of signal interpretation through the prevention of unwanted wave polarisations and reflections. However, it is difficult to use the axisymmetric guided wave to determine the circumferential position and coverage of a defect within the circular tube structure. Non-axisymmetric guided waves can be used to mitigate the limitation of the axisymmetric guided wave through the adoption of a partially covered transducer design and analysis of the propagation characteristics. The partial excitation of non-axisymmetric guided waves can facilitate the arrangement of a transducer during defect detection. This paper reviews state-of-the-art research on non-axisymmetric guided waves for determining the axial positions, circumferential positions, and circumferential lengths of defects. First, the fundamental analysis of a specific non-axisymmetric guided wave mode based on the normal mode expansion method and beam directivity analysis method reveals that the propagation characteristics of the wave mode are closely related to the working principle and configuration of the corresponding transducer. Then, the advantages and disadvantages of the different types of transducers and transducer arrays for the excitation of non-axisymmetric guided waves are introduced and discussed. Finally, the current defect detection methods based on non-axisymmetric guided waves are discussed and summarised. This review can promote the application of non-axisymmetric guided waves in defect detection.

show abstract

“…As mentioned previously, a number of publications have described piezoelectric wafer transducers for the generation of horizontally polarized shear waves. With appropriate poling and electrodes for the generating electric fields, both face-shear [28][29][30][31][32][33] and thickness-shear are realized [34][35][36]. Additionally, studies describing a method to excite horizontal shear waves with PFPs exist [37,38].…”

Section: Shear Wave Transducermentioning

confidence: 99%

A Mode-Switchable Guided Elastic Wave Transducer

et al. 2020

View full text Add to dashboard Cite

Increasing the safety demands of various progressively complex structures (e.g., in aerospace, automotive engineering, and wind power technology) and the parallel goal of reducing inspection costs set new objectives in the field of ultrasonics and guided elastic wave measurements. The focus is to deliver applicable sensors attached permanently to a particular structure for on-demand inspections. Piezoelectric fiber patches (PFPs) are known as lightweight and structure-conforming transducers for guided elastic wave generation and detection. We propose a new PFP concept combining advantages of different previous designs. With the new approach, a user can switch between a Lamb wave and a shear horizontal wave excitation by partially changing the polarity of the transducer electrodes. After summarizing the existing PFP variants, the new concept is introduced and experimentally verified by a three-dimensional laser Doppler vibrometer visualization of excited waves. Moreover, the first prototype of the new PFP transducer is presented.

show abstract

Development of a low frequency shear horizontal piezoelectric transducer for the generation of plane SH waves

Cited by 16 publications

References 7 publications

Excitation of fundamental shear horizontal wave by using face-shear (d36) piezoelectric ceramics

Excitation of fundamental shear horizontal wave by using face-shear (d36) piezoelectric ceramics

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

A Mode-Switchable Guided Elastic Wave Transducer

Contact Info

Product

Resources

About