Measurements and finite element simulations of guided waves propagating along linear and circular wedges

C. H. Yang*, J. S. Liaw

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

This paper is focused on the measurements and finite element analysis of wedge waves propagating along tips of circular wedges, with linear measurements as a benchmark. The measurement technique is a laser-generation/laser-detection laser ultrasound technique (LUT). Dynamic finite element analysis is employed for the investigation of dispersion behaviors of wedge waves. For linear wedge, our measurement and simulation results agree with previous reports. But for the case of circular wedge, very interesting phenomena is discovered for the first time. Dispersion relations with negative slope in the phase velocity-frequency space are discovered for the first anti-symmetric mode of the wedge wave for the first time.

Original languageEnglish
Pages (from-to)1139-1142
Number of pages4
JournalProceedings - IEEE Ultrasonics Symposium
Volume2
StatePublished - 1998
EventProceedings of the 1998 International Ultrasonics Symposium - Sendai, Miyagi, Jpn
Duration: 05 10 199808 10 1998

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