摘要：【中文】本发明涉及超材料隔声领域，公开了一种轻量化的蜂窝型低频隔声超材料结构，其包括上下两层框架、两层框架中间的弹性薄膜、薄膜上附加的质量块以及覆盖在框架外侧的均质薄板。所述框架是由若干个规则排列的六边形蜂窝单元组成，上下两层框架的每个蜂窝单元位置一一对应。所述质量块贴合在每个蜂窝单元的弹性薄膜上，质量块可以是全部相同或者不同种按一定规律进行组合排布，其形状包括圆环形、圆柱形和圆台形。本发明的蜂窝型声学超材料，优于传统隔声材料，其在低频段具有非常优异的隔声性能，选择轻质的框架材料，可以有效控制结构的整体质量，达到轻质化低频隔声的目的，在汽车、建筑等领域拥有非常广阔的应用前景。 【EN】The invention relates to the field of metamaterial sound insulation, and discloses a lightweight honeycomb type low-frequency sound insulation metamaterial structure which comprises an upper layer of framework, a lower layer of framework, an elastic film between the two layers of framework, a mass block attached to the film and a homogeneous thin plate covering the outer side of the framework. The frame is composed of a plurality of regularly arranged hexagonal honeycomb units, and the positions of the honeycomb units of the upper layer of frame and the lower layer of frame are in one-to-one correspondence. The mass blocks are attached to the elastic film of each honeycomb unit, can be all the same or different and are combined and arranged according to a certain rule, and the shapes of the mass blocks comprise a circular ring shape, a cylindrical shape and a circular truncated cone shape. The honeycomb type acoustic metamaterial is superior to the traditional sound insulation material, has excellent sound insulation performance in a low-frequency section, can effectively control the overall quality of a structure by selecting a light frame material, achieves the purpose of light low-frequency sound insulation, and has a very wide application prospect in the fields of automobiles, buildings and the like.

摘要：【中文】本发明公开了一种基于悬臂式的织物透气度测试仪，包括:悬臂式组合测试台，包括测试台、固定设置在所述测试台上的悬臂式测试工装；上测试室，固定设置在所述悬臂式测试工装上；下测试室，固定设在所述测试台上且位于所述上测试室正下方；测试主机，包括通过管路分别连接所述下测试室的抽气系统和压差计、与所述抽气系统和压差计电路连接的电脑、分别为所述电脑和抽气系统供电的电压控制装置。本发明还公开了一种基于悬臂式的织物透气度测试方法。本发明采用悬臂式工装可以无损测试各种形状尺寸的常见织物，不需要将样件裁剪。悬臂式工装结构简单，其上丝杆滑台模组能调节上下高度，进行试件的压紧防止漏气，确保测试结果的准确性。 【EN】The invention discloses a cantilever-type-based fabric air permeability tester, which comprises a cantilever-type combined test board, a cantilever-type test fixture and a cantilever-type test device, wherein the cantilever-type combined test board comprises a test board and a cantilever-type test fixture fixedly arranged on the test board; the upper test chamber is fixedly arranged on the cantilever type test tool; the lower test chamber is fixedly arranged on the test board and is positioned right below the upper test chamber; the test host comprises an air pumping system and a differential pressure gauge which are respectively connected with the lower test chamber through pipelines, a computer which is in circuit connection with the air pumping system and the differential pressure gauge, and a voltage control device which respectively supplies power for the computer and the air pumping system. The invention also discloses a cantilever-type-based fabric air permeability testing method. The cantilever type fixture can nondestructively test common fabrics with various shapes and sizes without cutting a sample piece. Cantilever type frock simple structure, the height about lead screw slip table module can be adjusted on it, carries out compressing tightly of test piece and prevents leaking gas, ensures the accuracy of test result.