Effect of Build Orientation and Laser Power on Microwave Loss in Metal Additive Manufactured Components
Effect of Build Orientation and Laser Power on Microwave Loss in Metal Additive Manufactured Components
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DOI：
10.1109/access.2021.3067306
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发表时间：
2021
期刊：
影响因子：
3.9
通讯作者：
Richard Gumbleton;R. Batson;K. Nai;A. Porch
中科院分区：
文献类型：
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作者：
Richard Gumbleton;R. Batson;K. Nai;A. Porch
将金属增材制造应用于无源微波元件的生产仍处于相对初级阶段。然而，由于提供几何设计自由度和显著的重量减轻，它越来越受到关注。由于表面光洁度差，增材制造组件的电气性能仍然不如传统制造技术，特别是在悬垂表面上，这在三维微波组件中是不可避免的。在本文中，我们提出了实验结果的差异，在微波表面电阻值之间的三个常见的建设方向，以及调查结果，建立了连接增加皮肤下的激光功率和减少悬垂表面的表面电阻。最后，测量增材制造的矩形波导部分，以评估组合的向上和向下表面对表面电阻的影响。
The adoption of metal additive manufacturing into the production of passive microwave components is still in its relative infancy. However, it is of increasing interest due to the offer of geometrical design freedom and significant weight reduction. The electrical properties of additive manufactured components are still inferior to traditional manufacturing techniques owing to the poor surface finish, especially on overhanging surfaces, which are unavoidable in three-dimensional microwave components. In this paper we present experimental findings on the disparity in microwave surface resistance values between three common build orientations, as well as findings that establish a connection between increasing downskin laser power and a reduction in surface resistance for overhanging surfaces. Finally, additive manufactured rectangular waveguide sections are measured to assess the influence of combined upward and downward facing surfaces on surface resistance.