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使用高Q谐振腔材料介电性能测试系统,对不同入射角下、不同格孔边长的NOMEX纸蜂窝材料介电性能进行了测试。结果表明,相同格孔边长的情况下,NOMEX纸蜂窝材料损耗角正切值随入射角的增大而增大,且小格孔蜂窝受入射角影响较大。为明确蜂窝材料介电性能的这种特性对夹层结构性能影响,设计并加工了一块5层夹层结构等效平板,通过设计仿真结果和试验结果对比分析,并结合测试误差分析,明确了蜂窝介电性能随入射角变化对夹层结构传输性能的影响及其原因。
The dielectric properties of NOMEX paper honeycomb with different lattice and side lengths under different incident angles were tested by using the high-Q resonant cavity dielectric properties test system. The results show that the loss tangent of NOMEX paper honeycomb increases with the incident angle and the influence of incident angle of the honeycomb is more influenced by the incident angle. In order to clarify the influence of this property of honeycomb material on the performance of sandwich structure, a 5-layer sandwich equivalent plate was designed and processed. By comparing the design simulation results with the experimental results and combining with the test error analysis, Influence of Electrical Properties with Transmission Angle on Transmission Performance of Sandwich Structure and Its Causes.