Metamaterial characterization for acoustic cloaking applications

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Acoustic metamaterials rely on sub-acoustic wavelength materials to achieve their unique material properties. An application of interest requires acoustic metamaterials that are homogeneous but anisotropic materials. Previous work has demonstrated at least three types of unit cells exhibit homogeneous anisotropic mass density and homogeneous isotropic bulk modulus. An analysis into the methods used to characterize the effective material parameters of different unit cells with water as the background fluid was performed. Nondestructive acoustic excitation techniques were used to extract the material parameters of different grades of foam to identify use in an acoustic metamaterial to determine if they exhibited the desired homogeneous anisotropic behavior. Different grades of foam glass exhibited varying degrees of anisotropic stiffness. The metamaterial unit cell behaved as expected, demonstrating anisotropic mass density and isotropic bulk modulus.

Original languageEnglish (US)
Title of host publicationProceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics
EditorsD. Moens, W. Desmet, B. Pluymers, W. Rottiers
PublisherKU Leuven - Departement Werktuigkunde
Pages3097-3109
Number of pages13
ISBN (Electronic)9789073802995
StatePublished - Jan 1 2018
Event28th International Conference on Noise and Vibration Engineering, ISMA 2018 and 7th International Conference on Uncertainty in Structural Dynamics, USD 2018 - Leuven, Belgium
Duration: Sep 17 2018Sep 19 2018

Publication series

NameProceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics

Other

Other28th International Conference on Noise and Vibration Engineering, ISMA 2018 and 7th International Conference on Uncertainty in Structural Dynamics, USD 2018
CountryBelgium
CityLeuven
Period9/17/189/19/18

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Acoustics and Ultrasonics

Cite this

Hanford, A., Kerrian, P., Beck, B., & Capone, D. (2018). Metamaterial characterization for acoustic cloaking applications. In D. Moens, W. Desmet, B. Pluymers, & W. Rottiers (Eds.), Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics (pp. 3097-3109). (Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics). KU Leuven - Departement Werktuigkunde.