Broadband acoustic lens design by reciprocity and optimization

Feruza A Amirkulova; Samer Gerges; Andrew N Norris

doi:10.1121/10.0009633

Broadband acoustic lens design by reciprocity and optimization

JASA Express Lett. 2022 Feb;2(2):024005. doi: 10.1121/10.0009633.

Authors

Feruza A Amirkulova¹, Samer Gerges¹, Andrew N Norris²

Affiliations

¹ Mechanical Engineering Department, San José State University, San José, California 95192, USA.
² Mechanical and Aerospace Engineering Department, Rutgers University, Piscataway, New Jersey 08854, USA feruza.amirkulova@sjsu.edu, samer.gerges@sjsu.edu, norris@rutgers.edu.

PMID: 36154266
DOI: 10.1121/10.0009633

Abstract

A broadband acoustic lens is designed based on the principle of reciprocity and gradient-based optimization. Acoustic reciprocity is used to define the pressure at the focal point due to a source located in a far-field and to relate the response by a configuration of scatterers for an incident plane wave. The pressure at the focal point is maximized by rearranging the scatterers and supplying the gradients of absolute pressure at the focal point with respect to scatterer positions. Numerical examples are given for clusters of cylindrical voids and sets of elastic thin shells in water.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Acoustics*
Lenses*
Water

Substances

Water