Effect of perforation on structure borne sound propagation through rigid porous materials has been investigated. Experimental works has been carried out on rigid porous materials with and without perforations. A low frequency vibration has been applied to excite the material structure by using a force transducer connected a shaker to detect the changes in resulting response. Applied vibration on sample surface causes structure borne sound wave to propagate through the material. The resulting response of this structural borne vibration is detected by using an accelerometer. The results with and without perforation of the sample have been compared. The results show that changing the structure of the material has an effect on the amplitude, shape and arrival time of the transmitted acoustic wave.
|Title of host publication||Acoustics 2015, 15 October 2015, Harrogate.|
|Number of pages||5|
|Publication status||Published - 1 Oct 2015|