An experimental investigation on anechoic properties of a perforated plate muffler with different construction parameters under broad-band noise excitation

摘要：

under high sound pressure levels excitation, the anechoic characteristic of a perforated plate muffler will be changed for the nonlinearity exciting, while the anechoic quantity has a close relation to the perforated plate construction parameters (porosity, orifice diameter, thickness of perforated plate). An experimental rig based on an impedance tube is established to study the verity of the anechoic characteristic of the perforated plate muffler under broad-noise excitation with different construction parameters. From the experimental results, some conclusions have been drawn: At the same sound pressure levels, the porosity and orifice diameter is smaller, the nonlinearity of the perforated plate muffler and the effective absorption frequency band is broader, but the absorption peak is smaller.

关键词： perforated plate muffler nonlinearity transmission loss

作者: Guojun Zhang Jijun Xiong Xiaodong Li

作者单位: The Key Laboratory of the State Education Ministry on Instrumentation Science & Dynamic Measurement, Institute of Acoustics, Chinese Academy of Sciences,Beijng,100080,China

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）