Multi-ttach: Techniques to Enhance Multi-material Attachments in Low-cost FDM 3D Printing

Kwon, Nahyun; Deshpande, Himani; Hasan, Kamrul; Darnal, Aryabhat; Kim, Jeeeun

doi:10.1145/3485114.3485116

Cited by 12 publications

(1 citation statement)

References 21 publications

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“…FFF at low and high speeds is not desirable, thus, a middle value around 45 mm/s is a better choice according to the main effect plots. It has been demonstrated by Kwon et al [ 24 ] that the influence of bed temperature on the bonding quality is more prominent than the deposition rate. However, in the case of FFF of soft polymers, it is visible that the nozzle speed has slightly higher importance.…”

Section: Resultsmentioning

confidence: 99%

Experimental Study on Warpage Phenomenon of Wax Parts Manufactured by Fused Filament Fabrication

Mukhtarkhanov,

Shehab,

Ali

2024

Polymers

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Warpage is one of the prominent issues in Fused Filament Fabrication. The cause of this is the rapid cooling of the polymer during extrusion. The residual thermal stresses accumulated within the print part result in a shape distortion and subsequent detachment of the object from the print bed. In this study, both experimental and numerical approaches were used to identify the stresses due to thermal shrinking that occurs in soft polymers such as wax. A temperature sweep test was performed using a rotational rheometer to measure the magnitude of axial forces that are generated due to the thermal shrinking of a thin layer of 3D printable wax. The thermal stresses responsible for warpage were computed analytically and using the FEA. It was found that due to thermal processes, the stress magnitude can reach a value of 1.17 MPa. This value is enough to cause the plastic deformation in the wax part having a thin elongated shape. In addition, Taguchi’s robust design has identified two major FFF parameters that impact the warpage in amorphous soft polymers. They are the printing speed and the print bed temperature. To achieve a low level of warpage, it is important to make sure that the layer deposition occurs at medium speeds and the print bed temperature is moderately high according to the findings of this study.

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Section: Resultsmentioning

confidence: 99%