油棕空果束纤维增强聚乳酸微孔板的声学性能

IF 0.9 Q4 ACOUSTICS

Sound and Vibration Pub Date : 2021-01-01 DOI:10.32604/sv.2021.014916

V. Sekar, S. Y. E. Noum, A. Putra, S. Sivanesan, Kok Chun Chin, Y. Wong, D. H. Kassim

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引用次数: 3

摘要

本文介绍了天然纤维增强复合材料微穿孔板的发展及其性能。MPP由聚乳酸(PLA)和油棕空果束纤维(OPEFBF)增强而成。通过阻抗管实验，研究了不同纤维密度、气隙和穿孔比对吸声系数的影响。结果表明，随着光纤密度的增加，SAC的峰值电平不受影响，但峰值频率向较低的频率偏移。这种现象可能是由于孔洞内壁存在孔隙。增大或减小气隙和射孔比都会使声吸收峰发生变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Acoustic Properties of Micro-Perforated Panels Made from Oil Palm Empty Fruit Bunch Fiber Reinforced Polylactic Acid

This paper presents the development and performance of micro-perforated panels (MPP) from natural fiber reinforced composites. The MPP is made of Polylactic Acid (PLA) reinforced with Oil Palm Empty Fruit Bunch Fiber (OPEFBF). The investigation was made by varying the fiber density, air gap, and perforation ratio to observe the effect on the Sound Absorption Coefficient (SAC) through the experiment in an impedance tube. It is found that the peak level of SAC is not affected, but the peak frequency shifts to lower frequency when the fiber density is increased. This phenomenon might be due to the presence of porosity in the inner wall of the holes. Increasing or decreasing the air gap and perforation ratio shifts the peaks of acoustic absorption either way.

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来源期刊

Sound and Vibration 物理-工程：机械

CiteScore

1.50

自引率

33.30%

发文量

审稿时长

>12 weeks

期刊介绍： Sound & Vibration is a journal intended for individuals with broad-based interests in noise and vibration, dynamic measurements, structural analysis, computer-aided engineering, machinery reliability, and dynamic testing. The journal strives to publish referred papers reflecting the interests of research and practical engineering on any aspects of sound and vibration. Of particular interest are papers that report analytical, numerical and experimental methods of more relevance to practical applications. Papers are sought that contribute to the following general topics: -broad-based interests in noise and vibration- dynamic measurements- structural analysis- computer-aided engineering- machinery reliability- dynamic testing