船用声学覆盖层吸声性能的试验

Experimental on the Sound Absorption Performance of Marine Acoustic Covering

针对含复合渐变型空腔结构的声学覆盖层,分析运用了分层等效理论,在试验中,采用控制变量法,探究声学结构对吸声系数的影响规律,并归纳声学材料对声学覆盖层吸声系数的影响规律。最终设计出一种声学覆盖层结构,并通过试验进行验证,测试结果证明该结构在各频段下的吸声效果良好。

Layered equivalent theory is analyzed and applied for the acoustic overlay containing the composite gradual cavity structure.In the test,the control variable method is adopted to explore the influence law of the acoustic structure on the sound absorption coefficient,and the influence law of the acoustic material on the sound absorption coefficient of the acoustic overlay is summarized.Ultimately,an acoustic overlay structure is designed and verified through the test.The test results show that the structure has good sound absorption effect in various frequency bands.