Paper Title:
Dispersion Behaviors of Wedge Waves Propagating Along Wedges with Bilinear Cross Sections
  Abstract

Wedge waves (WW) are guided acoustic waves propagating along the tip of a wedge, with energy tightly confined near the apex. Like Lamb waves, wedge waves with displacement field anti-symmetric about the mid-apex-plane are called anti-symmetric flexural (ASF) modes. This study is focused on exploring the dispersion behaviors of ASF modes propagating along a bilinear wedge (BW). A BW is wedge with a cross section of two apex angles, compared with a linear wedge (LW) having a single apex angle. In the literature, many studies regarding to the dispersion behaviors of ASF modes are reported for LW, but not for BW. In this study, a laser ultrasonic technique and finite element simulations are used to investigate the dispersion behavior of BW-ASF modes. It is found out that a BW-ASF mode is a result of mode coupling between the two LW-ASF modes of the same order corresponding to the two apex angles of the BW.

  Info
Periodical
Key Engineering Materials (Volumes 321-323)
Edited by
Seung-Seok Lee, Joon Hyun Lee, Ik Keun Park, Sung-Jin Song, Man Yong Choi
Pages
765-769
DOI
10.4028/www.scientific.net/KEM.321-323.765
Citation
C. H. Yang, C. Z. Tsen, "Dispersion Behaviors of Wedge Waves Propagating Along Wedges with Bilinear Cross Sections", Key Engineering Materials, Vols. 321-323, pp. 765-769, 2006
Online since
October 2006
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$32.00
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