Simulation of Aluminum Droplet Formation Process Based on the Uniform Droplet Ejection Technique in Microgravity

Lei, Zhao; Luo, Jun; Huang, Jieguang; Lian, Hongcheng; Qi, Lehua

doi:10.1109/3m-nano46308.2019.8947378

Cited by 1 publication

(2 citation statements)

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“…The microgravity and high vacuum are the key factors restraining the development of AM technology in space. [9][10][11][12][13][14] Microgravity in space brings several challenges during the AM processes. One typical challenge is the joining of the adjacent layers.…”

Section: Introductionmentioning

confidence: 99%

“…[11,12] In addition, high-vacuum environment also makes the AM in space very different from that on the earth, for instance, the thermal convection and conduction are depressed, and the heat dissipation becomes significantly slow. [13,14] The slow heat dissipation is unfavorable for the AM process of metallic materials with a high-input power, which is inevitable during the conventional AM processes of metallic materials. Moreover, the melts are easily volatile in the high-vacuum environment during the manufacturing process, which could seriously affect the space environment and the safety of the spacecraft.…”

Section: Introductionmentioning

confidence: 99%

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Bioinspired Interlayer Adhesion Strategy for Additive Manufacturing in Space

et al. 2023

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In-space manufacturing draws great attentions due to its potential applications in space exploration. However, the high-vacuum and microgravity environment introduces extrascientific and technical challenges. Biological experiments in the International Space Station show that spiders can build webs under microgravity conditions, which indicates that the spiderweb building could be independent of gravity. Herein, inspired by the spiderweb, a strategy for additive manufacturing in space, that is, building a 3D structure composed of metallic ribbons and bonded joints, is proposed. Several kinds of 3D metallic structures are manufactured and the flexibility and strength of the obtained jointed-ribbons are tested. It is showed in the results that the tensile strength of the 3D metallic structures reaches about 70% of that of the raw materials, while their hardness almost keeps unchanged. Herein, an effective method to realize the manufacturing of the complex metallic structures in space is provided.

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