4 articles for “Acoustic Absorption Coefficient”

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Research ArticleOpen accessIn the keywordsExperimental Study on Natural Fibers for Green Acoustic Absorption MaterialsLamyaa Abd ALRahman, Raja Ishak Raja, Roslan Abdul RahmanNatural fibre materials are one of the major ways to improve environmental pollution and new materials need to be considered to find the best solutions. This study presents an experimental investigation on pure micro porous materials from two types of fibers: Date Palm Fibre (DPF) and Coconut Coir Fibre (CCF). This study was conducted to examine the potential for using … …American Journal of Applied Sciences, Vol. 10, Issue 10 · 6 Sep 2013 · 8,782 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsAcoustic Properties of Innovative Material from Date Palm FibreLamyaa Abd AL-Rahman, Raja Ishak Raja, Roslan Abdul Rahman, Zawawi IbrahimProblem statement: An organic material is one of the major requirements to improve living environment and the invention of materials need to consider for the best solution. This study presents an experimental investigation on pure porous from Date Palm Fibre (DPF). The effectiveness of sound absorbers depends on structural architecture of this material. This study was conducted to examine the … …American Journal of Applied Sciences, Vol. 9, Issue 9 · 17 Jul 2012 · 8,094 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffect of Compression on the Acoustic Absorption of Coir FiberMohd Jailani Mohd Nor, Md. Ayub, Rozli Zulkifli et al.Problem statement: The absorption characteristics of coir fiber were analyzed previously. Analytical method to predict the acoustical behavior of coir fiber has already been developed. However, compression effects of coir fiber were not explored which might significant for acoustics absorption during seat padding. In this study, compression effect on the sound absorption characteristics of coir fiber are demonstrated based on … …American Journal of Applied Sciences, Vol. 7, Issue 9 · 30 Sep 2010 · 8,061 accessesView PDF Cite

Research ArticleOpen accessIn the abstractNoise Control Using Coconut Coir Fiber Sound Absorber with Porous Layer Backing and Perforated PanelRozli Zulkifli, Zulkarnain, Mohd Jailani Mohd NorProblem statement: Noise control was one of the major requirements to improve the living environment. One of the methods to do that is provided by sound absorber. Commonly, multi-layer sound absorbers are applied to absorb broadband noise that was composed of perforated plates, air space and porous material. However, multi-layers sound absorbers effectiveness depends on their construction. This study was … …American Journal of Applied Sciences, Vol. 7, Issue 2 · 28 Feb 2010 · 14,698 accessesView PDF Cite