Next Article in Journal
Sub-THz Imaging Using Non-Resonant HEMT Detectors
Previous Article in Journal
Monitoring Walker Assistive Devices: A Novel Approach Based on Load Cells and Optical Distance Measurements
Previous Article in Special Issue
Stress Prediction for Distributed Structural Health Monitoring Using Existing Measurements and Pattern Recognition
Article Menu

Export Article

Open AccessArticle
Sensors 2018, 18(2), 542; doi:10.3390/s18020542

Plane Wave SH0 Piezoceramic Transduction Optimized Using Geometrical Parameters

Département de génie mécanique, École de technologie supérieure, 1100 rue Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada
*
Author to whom correspondence should be addressed.
Received: 10 January 2018 / Revised: 31 January 2018 / Accepted: 5 February 2018 / Published: 10 February 2018
(This article belongs to the Special Issue Sensor Technologies for Health Monitoring of Composite Structures)
View Full-Text   |   Download PDF [3223 KB, uploaded 10 February 2018]   |  

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 . View Full-Text
Keywords: ultrasound; structural health monitoring; guided waves; shear horizontal waves; transducer; piezoceramic ultrasound; structural health monitoring; guided waves; shear horizontal waves; transducer; piezoceramic
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Boivin, G.; Viens, M.; Belanger, P. Plane Wave SH0 Piezoceramic Transduction Optimized Using Geometrical Parameters. Sensors 2018, 18, 542.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top