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Start Over Descriptor "Ultem" Topic fdm
3 results on '"Ultem"'

1. An Analysis of Polymer Gear Wear in a Spur Gear Train Made Using FDM and FFF Methods Based on Tooth Surface Topography Assessment

Author

Jadwiga Pisula, Paweł Turek, Grzegorz Budzik, and Mariusz Cieplak

Subjects
wear, Materials science, FDM, Polymers and Plastics, Organic chemistry, Fused filament fabrication, 02 engineering and technology, ABS, Article, chemistry.chemical_compound, Gear train, QD241-441, 0203 mechanical engineering, Operating temperature, PEEK, Peek, Composite material, ULTEM, Acrylonitrile butadiene styrene, Tooth surface, spur gears, General Chemistry, 021001 nanoscience & nanotechnology, Polyetherimide, Mechanism (engineering), 020303 mechanical engineering & transports, chemistry, topography of gear tooth, 0210 nano-technology
Abstract

This article focuses on wear tests of spur gears made with the use of additive manufacturing techniques from thermoplastic materials. The following additive manufacturing techniques were employed in this study: Melted and Extruded Modelling (FDM) and Fused Filament Fabrication (FFF). The study analysed gears made from ABS M-30 (Acrylonitrile Butadiene Styrene), ULTEM 9085 (PEI Polyetherimide) and PEEK (Polyetheretherketone), and the selection of these materials reflects their hierarchy in terms of economical application and strength parameters. A test rig designed by the authors was used to determine the fatigue life of polymer gears. Gear trains were tested under load in order to measure wear in polymer gears manufactured using FDM and FFF techniques. In order to understand the mechanism behind gear wear, further tests were performed on a P40 coordinate measuring machine (CMM) and a TalyScan 150 scanning instrument. The results of the gear tests made under load allow us to conclude that PEEK is resistant to wear and gear train operating temperature. Its initial topography undergoes slight changes in comparison to ABS M-30 and Ultem 9085. The biggest wear was reported for gears made from Ultem 9085. The hardness of the material decreased due to the loaded gear train’s operating temperature.

Published
2021
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2. An Analysis of Polymer Gear Wear in a Spur Gear Train Made Using FDM and FFF Methods Based on Tooth Surface Topography Assessment.

Author

Pisula, Jadwiga, Budzik, Grzegorz, Turek, Paweł, Cieplak, Mariusz, Klapiszewski, Łukasz, and Sorrentino, Luigi

Subjects
SPUR gearing, SURFACE topography, ACRYLONITRILE butadiene styrene resins, COORDINATE measuring machines, FATIGUE life, POLYMERS
Abstract

This article focuses on wear tests of spur gears made with the use of additive manufacturing techniques from thermoplastic materials. The following additive manufacturing techniques were employed in this study: Melted and Extruded Modelling (FDM) and Fused Filament Fabrication (FFF). The study analysed gears made from ABS M-30 (Acrylonitrile Butadiene Styrene), ULTEM 9085 (PEI Polyetherimide) and PEEK (Polyetheretherketone), and the selection of these materials reflects their hierarchy in terms of economical application and strength parameters. A test rig designed by the authors was used to determine the fatigue life of polymer gears. Gear trains were tested under load in order to measure wear in polymer gears manufactured using FDM and FFF techniques. In order to understand the mechanism behind gear wear, further tests were performed on a P40 coordinate measuring machine (CMM) and a TalyScan 150 scanning instrument. The results of the gear tests made under load allow us to conclude that PEEK is resistant to wear and gear train operating temperature. Its initial topography undergoes slight changes in comparison to ABS M-30 and Ultem 9085. The biggest wear was reported for gears made from Ultem 9085. The hardness of the material decreased due to the loaded gear train's operating temperature. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
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3. Rasters vs Contours For Thin Wall ULTEM 9085 FDM Applications

Author

Kota, Vasuman

Subjects
Mechanical Engineering, additive manufacturing, 3D Printing, FDM, ULTEM, Polyethermide
Abstract

Currently many components are additively manufactured via fused deposition modeling (FDM). However, FDM results in gaps between passes which produces a poor surface finish and porous material that is difficult to hold pressure. Commercial scale air systems require a pressure to be maintained within thin walled components with minimal post processing and clean up after fabrication. A design of experiments (DOE) was created to identify the optimal raster vs contour ratio for UTLEM 9085 CG fabricated using FDM at different build angles and wall thicknesses. A custom-built pressurized test system was developed, the leak rates were calculated and the surfaces were analyzed microscopically. In addition, a statistical analysis was performed at a 95% confidence interval to identify the range of leak rates that could be expected at each thickness and build angle. Results can be used to optimize the FDM process and component geometries for pressurized applications.

Published
2019

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