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 : 9.
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Belanger P 2018 16416 Plane Wave SH0 Piezoceramic Transduction.pdf - Version publiée Licence d'utilisation : Creative Commons CC BY. Télécharger (3MB) | Prévisualisation |
Résumé
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 ∘.
| Type de document: | Article publié dans une revue, révisé par les pairs |
|---|---|
| Informations complémentaires: | Identifiant de l'article: 542 |
| Mots-clés libres: | Fonds d'auteur ÉTS, FAETS |
| Chercheur(-euse): | Chercheur(-euse) Viens, Martin Bélanger, Pierre |
| Affiliation: | Génie mécanique, Génie mécanique |
| Date de dépôt: | 20 févr. 2018 20:46 |
| Dernière modification: | 23 févr. 2018 16:08 |
| URI: | https://espace2.etsmtl.ca/id/eprint/16416 |
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