Next Article in Journal
The Refining Mechanism of Super Gravity on the Solidification Structure of Al-Cu Alloys
Previous Article in Journal
Synthesis of Fluorescent Core-Shell Metal Nanohybrids: A Versatile Approach
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle
Materials 2016, 9(12), 1000; doi:10.3390/ma9121000

Effects of Perforation on Rigid PU Foam Plates: Acoustic and Mechanical Properties

1
Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou 350108, China
2
Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan
3
School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
4
Department of Fashion Design, Asia University, Taichung 41354, Taiwan
5
Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China
6
Department of Aerospace and Systems Engineering, Feng Chia University, Taichung 40724, Taiwan
7
Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan
8
Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung 40402, Taiwan
9
Graduate Institute of Biotechnology and Biomedical Engineering, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Morreale
Received: 10 September 2016 / Revised: 28 November 2016 / Accepted: 2 December 2016 / Published: 9 December 2016
View Full-Text   |   Download PDF [3084 KB, uploaded 9 December 2016]   |  

Abstract

Factories today are equipped with diverse mechanical equipment in response to rapid technological and industrial developments. Industrial areas located near residential neighborhoods cause massive environmental problems. In particular, noise pollution results in physical and psychological discomfort, and is a seen as invisible and inevitable problem. Thus, noise reduction is a critical and urgent matter. In this study, rigid polyurethane (PU) foam plates undergo perforation using a tapping machine. The mechanical and acoustic properties of these perforated plates as related to perforation rate and perforation depth are evaluated in terms of compression strength, drop-weight impact strength, and sound absorption coefficient. Experimental results indicate that applying the perforation process endows the rigid PU foaming plates with greater load absorption and better sound absorption at medium and high frequencies. View Full-Text
Keywords: perforation process; polyurethane (PU) foam; mechanical properties; sound absorption coefficient perforation process; polyurethane (PU) foam; mechanical properties; sound absorption coefficient
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Lin, J.-H.; Chuang, Y.-C.; Li, T.-T.; Huang, C.-H.; Huang, C.-L.; Chen, Y.-S.; Lou, C.-W. Effects of Perforation on Rigid PU Foam Plates: Acoustic and Mechanical Properties. Materials 2016, 9, 1000.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top