研究目的
Investigating the use of laser powder bed fusion (L-PBF) technology for the production of high-performance microwave waveguide devices intended for satellite telecommunications.
研究成果
The study demonstrates that an AM-oriented RF design can enhance the RF performance of prototypes manufactured via L-PBF, meeting standard specifications for SatCom applications. The optimization of both the internal shape of the filters and AM machine parameters was crucial in achieving these results.
研究不足
The study acknowledges challenges such as balling, residual stress development, and part deformation due to high energy used in the L-PBF process. Additionally, a residual systematic enlargement of waveguide dimensions was noted, requiring further compensation.
1：Experimental Design and Method Selection
The study utilized L-PBF technology to manufacture microwave waveguide devices, focusing on the design and optimization of filters for satellite communications.
2：Sample Selection and Data Sources
Prototypes were manufactured in AlSi10Mg alloy to assess the repeatability and performance of the manufacturing process.
3：List of Experimental Equipment and Materials
EOSINT M270 Dual-mode system equipped with a Yb-fiber laser, AlSi10Mg alloy.
4：Experimental Procedures and Operational Workflow
The manufacturing process involved aligning the waveguide propagation axis with the building direction, tilting stubs to avoid supports, and optimizing process parameters such as laser power, scan speed, and layer thickness.
5：Data Analysis Methods
Measured scattering coefficients were compared to predicted parameters to assess performance.
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