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甘蔗纤维板穿孔吸声的初步研究
引用本文:孙广荣,魏荣爵.甘蔗纤维板穿孔吸声的初步研究[J].物理学报,1963,19(3):151-159.
作者姓名:孙广荣  魏荣爵
作者单位:南京大学物理系
摘    要:本文对国内普遍采用的甘蔗纤维板吸声材料的吸声性质作了初步的研究,而重点则是由这种材料制成的穿孔吸声结构。我们的实验指出这种材料存在著“机械式的振动”和薄板式的共振吸收;而这种材料制成的穿孔结构的共振吸收峯,较一般胶合板等所制成的同类型的结构较为平坦,但在测量的频率范围以内总吸声值要大一些。对文献中提出的两种新穿孔结构也作了简短的探讨。本文主要给出了管测法的实验结果,混响法的结果只作为参考。对于各种清况下的测量结果主要是从比声阻率的概念作了理论说明。结论中还指出使用这种材料制成的吸声结构的优缺点。 关键词

收稿时间:1961-12-08

PRELIMINARY STUDIES OF PERFORATED "SUGAR-CANE FIBERBOARD" SOUND ABSORBERS
SUN KUAN-YUNG and WEI YUNG-CHIO.PRELIMINARY STUDIES OF PERFORATED "SUGAR-CANE FIBERBOARD" SOUND ABSORBERS[J].Acta Physica Sinica,1963,19(3):151-159.
Authors:SUN KUAN-YUNG and WEI YUNG-CHIO
Abstract:This paper is a preliminary report on acoustical studies of the sugar-cane fiber-board, emphasis being made for cases in which the fiberboard was perforated.Experiments with the non-perforated fiberboard indicated the existence of "mechanical vibration" determined by its boundary conditions including peripheral constraint, as well as of resonance absorption of thin panels backed by an air-space. When the fiberboard was perforated, resonance peaks became less prominent but the over-all absorption was higher than ordinary perforated panel absorbers previously investigated. In addition, two new types of perforated sound absorbers were briefly discussed.For most cases theoretical interpretations were given, especially on the basis of specific acoustic resistance, and both advantages and disadvantages for these fiberboard sound absorbers were discussed in the conclusion.
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