Optimization of a heterogeneous parallel microperforated panel as a sustainable sound absorber for expanded absorption bandwidth

Zahra Hashemi, Mohammad Javad SheikhMozafari, Occupational Health Engineering, School of Medical Sciences, Behbahan Faculty of Medical Sciences, Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Scientific Research Center, Tehran University of Medical Sciences

Journal of Vibration and Control

Published online on October 18, 2025

Abstract

Journal of Vibration and Control, Ahead of Print.
Concerns over the health risks, flammability, and limited low-frequency efficiency of fiber absorbers have encouraged the use of micro-perforated panels (MPPs). However, their performance is often limited by narrow absorption bandwidths. This study ...