title: Experimental and numerical investigations on the 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. This study is focused on exploring the dispersion behaviors of WW 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 combined experimental and numerical stidy is used to investigate the dispersion behavior of WW propagating in BW's. It is found out that WW in a BW is a result of mode coupling between the two WW's corresponding to simple wedges with the two apex angles of the BW.
authors.affiliation: Department of Mechanical Engineering, Chang Gung University, 259 Wen-Hua 1st Road, Kwei-Shan, Taoyuan, Taiwan. yang@mail.cgu.edu.tw <yang@mail.cgu.edu.tw>
authors.forename: Che-Hua
authors.initials: CH
authors.lastname: Yang
authors.forename: Chun-Zen
authors.initials: CZ
authors.lastname: Tsen