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Optimization and Comparative Analysis of Micro-Perforated Panel Sound Absorbers: A Study on Structures and Performance Enhancement Publisher



Hashemi Z1 ; Asadi N2 ; Sadeghian M3 ; Putra A4 ; Ahmadi S5 ; Alidosti M6 ; Sheikhmozafari MJ7
Authors
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Authors Affiliations
  1. 1. Assistant Professor of Occupational Health Engineering School of Medical Sciences, Behbahan Faculty of Medical Sciences, Behbahan, Iran
  2. 2. Instructor of Occupational Health Engineering School of Medical Sciences, Behbahan Faculty of Medical Sciences, Behbahan, Iran
  3. 3. Assistant Professor of Occupational Health Engineering Department of Occupational Health, School of Health Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  4. 4. School of Civil and Mechanical Engineering, Curtin University, Kent Street, Bentley, 6102, WA, Australia
  5. 5. Associate Professor of Occupational Health Engineering Department of Occupational Health and Safety, School of Health Qazvin University of Medical Sciences, Qazvin, Iran
  6. 6. Assistant Professor of Health Education and Promotion Department of Public Health, School of Health Social Health Determinate Shahrekord University of Medical Sciences, Shahrekord, Iran
  7. 7. Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: Measurement: Journal of the International Measurement Confederation Published:2024


Abstract

In this study, three MPP (micro-perforated panels) absorber configurations (simple, series, parallel) were investigated via the response surface method (RSM) to broaden the absorption bandwidth. The study focused on the average normal sound absorption coefficient (SAC) in the range of 125–3000 Hz via an impedance tube. The impedance tube results were finally compared with the Finite Element Method (FEM) and Equivalent Circuit Method (ECM) simulations. Samples Fabrication involves 3D printing, with optimized configurations exhibiting expanded absorption bandwidths. The average absorption coefficient was 1.5 times higher in series MPPs and 1.2 times higher in single and parallel MPPs compared to the non-optimal state. In the optimal state, the series and parallel structures outperform the single design, and among the studied factors the hole diameter significantly influenced sound absorption more than others. The alignment of coefficients from various methods with RSM predictions was noteworthy. The results obtained from the FEM and ECM methods align perfectly, This study underscores RSM's effectiveness, demonstrating optimization benefits and coherence between numerical, theoretical, and experimental models in evaluating MPP absorbers. © 2024 Elsevier Ltd
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