Premium
Lamb wave resonance transmission through a system of deep notches in a plate‐like waveguide
Author(s) -
Glushkov Evgeny,
Glushkova Natalia,
Eremin Artem,
Lammering Rolf
Publication year - 2017
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201710307
Subject(s) - resonance (particle physics) , transmission (telecommunications) , waveguide , acoustics , optics , materials science , acoustic resonance , physics , engineering , telecommunications , atomic physics
Abstract The results of theoretical and experimental investigation into resonance phenomena accompanying guided wave propagation in a metallic plate with a finite regular system of rectangular deep notches are presented. While the expected intensification of wave blocking by a system of notches comparing to the case of a single defect is confirmed, the resonance transmission at the predicted frequencies within these forming stop bands is also observed. Noticeable motion localization in the waveguide area between the notches at these frequencies is visualized with experimental surface B‐scans. Their patterns coincide with the theoretical predictions obtained on the basis of a semi‐analytical computer model for the notched infinite plate. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)