为了探讨整体中空复合材料结构与隔声性能之间的关系,设计并制备了不同高度、不同面板厚度以及不同芯材的玻璃纤维整体中空织物/环氧树脂复合材料。采用混响室-消声室法对其隔声性能进行了测试分析。研究表明：整体中空复合材料的结构对其隔声性能有明显的影响。复合材料的隔声性能随着结构高度的增加逐渐提高,面板厚度对材料的隔声效果影响较大,芯材排列形式对其隔声性能影响相对较小;8形整体中空复合材料的隔声性能略高于88形和X形。
In order to study the relationship between the composite structure and sound insulation property of integrated hollow core sandwich composites,the glass fabric/epoxy resin composites with different heights,panel thicknesses and core structures were fabricated.The experiments for sound insulation property were carried out in a reverberation-anechoic chambers measuring system.The results show that the structure of glass fabric has an obvious influence on the sound insulation property of integrated hollow core sandwich composites.The sound properties of the composites increase gradually with the increase in height.The panel thickness has a greater impact on the sound insulation properties of the composites,and the effect of core structure is relatively weak.The sound insulation property of the composites with 8 shaped core structure is slightly higher than that of the composites with 88 shaped and X shaped core structure.
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