TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Mayer, Andreas A1 - Pupyrev, Pavel Dmitrievich A1 - Lomonosov, Alexey M. A1 - Nikodijevic, Aleksandar T1 - On the existence of guided acoustic waves at rectangular anisotropic edges JF - Ultrasonics N2 - The existence of acoustic waves with displacements localized at the tip of an isotropic elastic wedge was rigorously proven by Kamotskii, Zavorokhin and Nazarov. This proof, which is based on a variational approach, is extended to rectangular anisotropic wedges. For two high-symmetry configurations of rectangular edges in elastic media with tetragonal symmetry, a criterion is derived that allows identifying the boundary between the regions of existence for wedge modes of even and odd symmetry in regions of parameter space, where even- and odd-symmetry modes do not exist simultaneously. Furthermore, rectangular edges with non-equivalent surfaces are analyzed, and it is shown that at rectangular edges of cubic elastic media with one (110) surface and one (001) surface, a tip-localized guided wave always exists, apart from special cases that are characterized. KW - Schallwelle KW - Anisotropie Y1 - 2016 U6 - https://doi.org/10.1016/j.ultras.2016.06.016 DO - https://doi.org/10.1016/j.ultras.2016.06.016 VL - 71 SP - 278 EP - 287 ER -