ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
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 fieldanti-symmetric about the mid-apex-plane are called anti-symmetric flexural (ASF) modes. Thisstudy is focused on exploring the dispersion behaviors of ASF modes propagating along a bilinearwedge (BW). A BW is wedge with a cross section of two apex angles, compared with a linearwedge (LW) having a single apex angle. In the literature, many studies regarding to the dispersionbehaviors of ASF modes are reported for LW, but not for BW. In this study, a laser ultrasonictechnique and finite element simulations are used to investigate the dispersion behavior of BW-ASFmodes. It is found out that a BW-ASF mode is a result of mode coupling between the two LW-ASFmodes of the same order corresponding to the two apex angles of the BW
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.765.pdf
Permalink