A wrinkly phononic crystal slab

Alireza Bayat; Faramarz Gordaninejad

doi:10.1117/12.2086340

23 March 2015 A wrinkly phononic crystal slab

Alireza Bayat, Faramarz Gordaninejad

Proceedings Volume 9438, Health Monitoring of Structural and Biological Systems 2015; 943810 (2015) https://doi.org/10.1117/12.2086340
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

The buckling induced surface instability is employed to propose a tunable phononic crystal slab composed of a stiff thin film bonded on a soft elastomer. Wrinkles formation is used to generate one-dimensional periodic scatterers at the surface of a finitely thick slab. Wrinkles’ pattern change and corresponding stress is employed to control wave propagation triggered by a compressive strain. Simulation results show that the periodic wrinkly structure can be used as a transformative phononic crystal which can switch band diagram of the structure in a reversible behavior. Results of this study provide opportunities for the smart design of tunable switch and elastic wave filters at ultrasonic and hypersonic frequency ranges.

Citation Download Citation

Alireza Bayat and Faramarz Gordaninejad "A wrinkly phononic crystal slab", Proc. SPIE 9438, Health Monitoring of Structural and Biological Systems 2015, 943810 (23 March 2015); https://doi.org/10.1117/12.2086340

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