Design and Manufacturing of the Multi-Layered Metamaterial Plate with Interfacial Crack-like Voids and Experimental-Theoretical Study of the Guided Wave Propagation
Mikhail V. Golub,
Ilya A. Moroz,
Yanzheng Wang,
Artur D. Khanazaryan,
Kirill K. Kanishchev,
Evgenia A. Okoneshnikova,
Alisa N. Shpak,
Semyon A. Mareev,
Chuanzeng Zhang
Affiliations
Mikhail V. Golub
Institute for Mathematics, Mechanics and Informatics, Kuban State University, Krasnodar 350040, Russia
Ilya A. Moroz
Membrane Institute, Kuban State University, Krasnodar 350040, Russia
Yanzheng Wang
Department of Civil Engineering, University of Siegen, D-57068 Siegen, Germany
Artur D. Khanazaryan
Institute for Mathematics, Mechanics and Informatics, Kuban State University, Krasnodar 350040, Russia
Kirill K. Kanishchev
Institute for Mathematics, Mechanics and Informatics, Kuban State University, Krasnodar 350040, Russia
Evgenia A. Okoneshnikova
Institute for Mathematics, Mechanics and Informatics, Kuban State University, Krasnodar 350040, Russia
Alisa N. Shpak
Institute for Mathematics, Mechanics and Informatics, Kuban State University, Krasnodar 350040, Russia
Semyon A. Mareev
Membrane Institute, Kuban State University, Krasnodar 350040, Russia
Chuanzeng Zhang
Department of Civil Engineering, University of Siegen, D-57068 Siegen, Germany
A novel kind of acoustic metamaterials (AMMs) with unit cells composed of two layers made of dissimilar materials with a crack-like void situated at the interface between bars is considered. Recently, the authors showed numerically that this novel kind of AMMs can provide unidirectional propagation of guided waves. Several AMM specimens (the finite stack of periodic elastic layers with and without voids) have been manufactured using additive manufacturing techniques and regular gluing. The details of the manufacturing process are discussed. In the experiment, the elastic waves have been excited by a rectangular piezoelectric wafer active transducer bonded at the surface of the specimen. Vibrations of the opposite side of the AMM specimen are measured via a piezoelectric sensor. The band gaps are observed in the experiment and values of their width and location correlate with numerically predicted ones.
