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首页> 外文期刊>International Journal of Materials Engineering Innovation >Simulating electromagnetic field inside cavities charged with dielectric materials
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Simulating electromagnetic field inside cavities charged with dielectric materials

机译：模拟腔内充满电介质的电磁场

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Microwave heating has been widely used in industry to synthesise dielectric materials, in which conventional procedures are slow, expensive and inefficient. This work presents an alternative curing method based on the microwave radiation. In this application, the energy is introduced directly into the volume of the dielectric and consequently the quality of the process is highly dependent on the uniformity of the electromagnetic field distribution along the material. That is, the non-uniformity of the heating is a potential problem with serious consequences. To understand this phenomenon, a perceptive of how electromagnetic field is absorbed by materials is essential. Then, we carried out the electromagnetic field optimisation in a microwave oven loaded with samples of uncured composite cork. The COMSOL Multiphysics® software was used for this purpose. The complex permittivity of the material, at microwave frequencies, was measured with the resonant cavity method, and used as a parameter for the simulation.
机译：微波加热已在工业中广泛用于合成介电材料，其中常规过程缓慢，昂贵且效率低下。这项工作提出了一种基于微波辐射的替代固化方法。在此应用中，能量直接引入电介质的体积，因此过程的质量高度依赖于沿材料的电磁场分布的均匀性。即，加热的不均匀是具有严重后果的潜在问题。要了解这种现象，必须了解材料如何吸收电磁场。然后，我们在装有未固化复合软木塞样品的微波炉中进行了电磁场优化。为此目的使用了COMSOLMultiphysics®软件。用共振腔法测量了材料在微波频率下的复介电常数，并将其用作模拟的参数。

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