ZennaroFinal.pdf (370.78 kB)
Download file

Experimental and numerical analysis of a transducer for the generation of guided waves

Download (370.78 kB)
conference contribution
posted on 08.01.2018, 15:09 authored by Marco Zennaro, Alex Haig, Daniel O'BoyDaniel O'Boy, Stephen Walsh
Dry-coupled thickness-shear transducers represent one of the most common ways to excite guided waves for the inspection of tubular and plate-like structures. Although already established in industry, some features of these transducers need to be studied, i.e. the uniformity of vibration, the modes excitability and the transmission of ultrasonic energy into the inspected structure. In particular, due to the dispersive behaviour of guided waves and the mode coupling these transducers require a precise characterization to guarantee a uniform in-plane vibration. A numerical and experimental characterization of the assembly has been carried out to assess the influence of the elements of the assembly into the uniformity of vibration. The outcome of the results in terms of mode-shape, displacement pattern and resonance frequencies is discussed to predict useful design changes to enhance the ultrasonic performance of these transducers.

Funding

This work was supported by Lloyd’s Registered Foundation, Loughborough University and TWI .

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

IXth NDT in Progress

Citation

ZENNARO, M. ... et al., 2017. Experimental and numerical analysis of a transducer for the generation of guided waves. Presented IXth NDT in Progress, Prague, Czech Republic, October 9 – 11.

Publisher

NDT

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

01/08/2017

Publication date

2017

Notes

This is a conference paper.

Language

en

Location

Prague, Czech Republic