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- W4366998593 abstract "Abstract Additive Manufacturing (AM) has opened the door for portable and self-sufficient fabrication. However, environments with base vibration degrade part quality during production. This work focuses on investigating and mitigating the effects of base vibration on AM part quality. Factors influencing part quality initiated the approach, followed by experiments on an extrusion-type printer to inspect and minimize vibration effects. Part roughness was used as the part quality metric based on preliminary experimental observations. A modal impact test identified the print bed and print head gantry as vibration-sensitive components at ≈ 40 Hz. These vibration modes were targeted with experiments to evaluate and reduce vibration effects. Vibration originating from machine operation and vertical base vibration were compared. Part quality was impacted by base vibration 600 × more than by machine operation. Part roughness correlated with vertical base vibration intensity as the roughness standard deviation increased over 85%, from 187.71 μ in to 349.01 μ in, for parts printed with base vibration compared to parts printed without. This result indicated base vibration as the primary vibration source that leads to part quality degradation. A passive vibration control scheme was implemented resulting in a 93% reduction in the relative motion between the print head and bed, from 23.71 to 1.75 g / g , and a 16% improvement in part surface roughness, from 1015.60 to 850.39 μ in. This research provides direction for extending AM to harsh operational environments." @default.
- W4366998593 created "2023-04-27" @default.
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- W4366998593 date "2023-04-25" @default.
- W4366998593 modified "2023-10-01" @default.
- W4366998593 title "Base Vibration Effects on Additive Manufactured Part Quality" @default.
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- W4366998593 doi "https://doi.org/10.1007/s40799-023-00629-1" @default.
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