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Plane wave SH0 piezoceramic transduction optimized using geometrical parameters

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Boivin, Guillaume, Viens, Martin et Belanger, Pierre. 2018. « Plane wave SH0 piezoceramic transduction optimized using geometrical parameters ». Sensors, vol. 18, nº 2.
Compte des citations dans Scopus : 2.

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Abstract

Structural health monitoring is a prominent alternative to the scheduled maintenance of safety-critical components. The nondispersive nature as well as the through-thickness mode shape of the fundamental shear horizontal guided wave mode (SH 0 ) make it a particularly attractive candidate for ultrasonic guided wave structural health monitoring. However, plane wave excitation of SH 0 at a high level of purity remains challenging because of the existence of the fundamental Lamb modes (A 0 and S 0 ) below the cutoff frequency thickness product of high-order modes. This paper presents a piezoelectric transducer concept optimized for plane SH 0 wave transduction based on the transducer geometry. The transducer parameter exploration was initially performed using a simple analytical model. A 3D multiphysics finite element model was then used to refine the transducer design. Finally, an experimental validation was conducted with a 3D laser Doppler vibrometer system. The analytical model, the finite element model, and the experimental measurement showed excellent agreement. The modal selectivity of SH 0 within a 20 ∘ beam opening angle at the design frequency of 425 kHz in a 1.59 mm aluminum plate was 23 dB, and the angle of the 6 dB wavefront was 86 ∘.

Item Type: Peer reviewed article published in a journal
Additional Information: Identifiant de l'article: 542
Uncontrolled Keywords: Fonds d'auteur ÉTS, FAETS
Professor:
Professor
Viens, Martin
Bélanger, Pierre
Affiliation: Génie mécanique, Génie mécanique
Date Deposited: 20 Feb 2018 20:46
Last Modified: 23 Feb 2018 16:08
URI: http://espace2.etsmtl.ca/id/eprint/16416

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