Affordable Access

deepdyve-link
Publisher Website

Design of Multiple Parallel-Arranged Perforated Panel Absorbers for Low Frequency Sound Absorption.

Authors
  • Li, Xin1
  • Wu, Qianqian1
  • Kang, Ludi1
  • Liu, Bilong2
  • 1 School of Mechanical & Automobile Engineering, Qingdao University of Technology, No. 777 Jialingjiang Road, Qingdao 266520, China. , (China)
  • 2 School of Mechanical & Automobile Engineering, Qingdao University of Technology, No. 777 Jialingjiang Road, Qingdao 266520, China. [email protected] , (China)
Type
Published Article
Journal
Materials
Publisher
MDPI AG
Publication Date
Jun 29, 2019
Volume
12
Issue
13
Identifiers
DOI: 10.3390/ma12132099
PMID: 31261868
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

A particular structure that consists of four parallel-arranged perforated panel absorbers (PPAs) is proposed for the low frequency sound absorption within a constraint space. The apertures of the perforated panels are set to ≥1.5 mm, and the number of orifices is much less and therefore easier to be produced in comparison with that of the micro perforated panel (MPP). A simple approximation model by using acoustic-electrical analogy is described to calculate the sound absorption coefficient of such device subject to normal wave incidence. Theoretical and experimental results demonstrate that the device can provide more than one octave sound absorption bandwidth at low frequencies.

Report this publication

Statistics

Seen <100 times