Non-contact measurement of nonlinear Rayleigh waves using the scanning laser vibrometer
Date
2017
Authors
Hughes, J.M.
Howie, J.
Vidler, J.
Mohabuth, M.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Proceedings of the 9th Australasian Congress on Applied Mechanics (ACAM 9), 2017, vol.2017-November, pp.358-363
Statement of Responsibility
J.M. Hughes, J. Howie, J. Vidler and M. Mohabuth
Conference Name
9th Australasian Congress on Applied Mechanics (ACAM) (27 Nov 2017 - 29 Nov 2017 : Sydney, Australia)
Abstract
This paper describes an experimental methodology for the generation and measurement of nonlinear Rayleigh waves in thick plates. A high-voltage ultrasonic transducer together with a polyethylene wedge is used to generate the surface waves in the specimen. The Polytec PSV-400-M2-20 scanning vibrometer system is used to make non-contact, full-field measurements of the out-of-plane displacement of the plate. Results for the growth of the second harmonic amplitude with propagation distance and the relative nonlinearity parameter are presented. The effects of surface preparation and averaging of the time domain signal on the consistency of the second harmonic measurements are investigated.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© Engineers Australia