Towards understanding and eliminating defects in additively manufactured CubeSat mirrors

Towards understanding and eliminating defects in additively manufactured CubeSat mirrors
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理解并消除增材制造的 CubeSat 反射镜中的缺陷

DOI:
10.1117/12.2629935
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发表时间:
2022
期刊:
--
影响因子:
--
通讯作者:
Snell R
Snell R
中科院分区:
--
文献类型:
--
作者:
Snell R

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使用增材制造(AM; 3D打印)制造镜子是一种很有前途但研究不足的生产路线。在AM可以完全用于制造镜面基板之前,有几个问题需要更好地理解。AM采用的一个重要障碍是孔隙率的存在及其对所得光学特性的影响。制备了几批高硅铝(AlSi10Mg)样品,研究了激光参数、激光路径和构建方向与孔隙率的关系。结果表明,消除缺陷依赖于工艺参数和材料性能的复杂相互作用,其中激光残余热量是一个重要因素。此外,还研究了热等静压机的使用,并制作了Cassegrain立方体卫星的一些完整原型。
Fabricating mirrors using additive manufacturing (AM; 3D printing) is a promising yet under-researched production route. There are several issues that need to be better understood before AM can be fully adopted to fabricate mirror substrates. A significant obstacle to AM adoption is the presence of porosity and the influence that has on the resultant optical proprieties. Several batches of high-silicon aluminium (AlSi10Mg) samples were created to investigate the relationships laser parameters, laser paths and build orientations have with the porosity. The results showed that eliminating defects relies on a complex interaction of the process parameters and material properties, with the residual heating from the laser proving to be a significant factor. In addition, the use of a hot isostatic press is investigated and some full prototypes of the Cassegrain CubeSat were produced.
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