作　　者： ; ;

机构地区： 上海工程技术大学汽车工程学院

出　　处： 《小型内燃机与摩托车》 2010年第5期19-21,共3页

摘　　要： 分析碳烟捕集泡沫陶瓷材料的吸声原理,获得泡沫陶瓷吸声系数与泡沫陶瓷的孔径、孔隙率、试样厚度和入射波的频率有关。利用驻波管法测量两组不同参数的泡沫陶瓷的吸声系数,试验结果进一步验证了泡沫陶瓷的结构参数和入射频率对吸声系数和消声性能的影响。 The principles of sound absorption foam ceramic material for trapping soot were investigated.The relationship between the ceramic foam absorption coefficient and the ceramic foam pore size,porosity,sample thickness and the frequency of the incident wave were obtained.Two different parameters of the absorption coefficient of ceramic foam were measured with standing wave tube method.Test results further validate the effects of structural parameters of ceramic foam and the incident frequency on absorption coefficient and the silencer performance.

关 键 词： 吸声系数 驻波管法 结构参数 声波频率

领　　域： [动力工程及工程热物理]