Al薄膜对玻璃纤维增强树脂基复合材料电磁性能的影响

发布时间：2018-09-05 17:27

【摘要】：利用高频电磁场计算软件FEKO对Al薄膜与玻璃纤维增强树脂基复合材料的电磁波反射率进行了仿真计算。研究了复合材料介电常数实部er、电损耗角正切tande、磁导率mr及磁损耗角正切tandm对反射率的影响,并通过仿真计算与实际测试结果对比,确定了仿真模型中玻璃纤维增强树脂基复合材料的等效电磁参数。研究了Al薄膜与玻璃纤维增强树脂基复合材料结构中Al薄膜厚度对反射率的影响,仿真计算与测试结果表明,Al薄膜厚度对复合材料的反射率影响较大,Al薄膜与玻璃纤维增强树脂基复合材料结构中存在一个最佳电阻值,使该结构谐振反射最小。根据传输线理论,利用MATLAB对谐振最强时对应电阻的大小进行了求解。通过计算不同结构的Al薄膜与玻璃纤维增强树脂基复合材料,得到了仿真模型中Al薄膜与磁控溅射制备Al薄膜的厚度关系。确定了仿真模型中各材料的等效电磁参数,仿真计算结果与测试结果吻合较好。
[Abstract]:The electromagnetic wave reflectivity of Al thin film and glass fiber reinforced resin matrix composites was simulated by using high frequency electromagnetic field calculation software FEKO. The effects of er, loss angle tangent tande, permeability mr and magnetic loss angle tangent tandm on reflectivity are studied. The equivalent electromagnetic parameters of glass fiber reinforced resin matrix composites in the simulation model are determined. The effect of the thickness of Al film on the reflectivity of glass fiber reinforced resin matrix composites was studied. The results of simulation and measurement show that the thickness of Al film has a great influence on the reflectivity of the composite, and there is an optimum resistance value in the structure of glass fiber reinforced resin matrix composite, which makes the resonance reflection of the structure minimum. According to the transmission line theory, MATLAB is used to solve the corresponding resistance when the resonance is the strongest. The relationship between the thickness of Al thin films and Al films prepared by magnetron sputtering in the simulation model was obtained by calculating the different structure of Al films and glass fiber reinforced resin matrix composites. The equivalent electromagnetic parameters of each material in the simulation model are determined, and the simulation results are in good agreement with the test results.
【作者单位】：中国科学院金属研究所;中国科学院大学;澳汰尔工程软件(上海)有限公司;
【分类号】：TB383.2;TQ327.1

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