Effect Of Slicing Parameters On Void Formation In Fused Deposition Modelling (FDM) Part

Shamsudin, Ahmad Al-Nabil (2021) Effect Of Slicing Parameters On Void Formation In Fused Deposition Modelling (FDM) Part. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Void formation is a structural defect which is formed during the process of 3D printing. Void affects the structural integrity of a 3D printed part which would lead to reduced durability and functionality. This minor defect could affect other important manufacturing aspects such as cost, time and energy, which also determine the efficiency of overall manufacturing processes. Therefore, this project was carried out to conduct an experiment on the effect of slicing parameters towards void formation and to study the effect of different model shapes on the intensity of void formation. Experimental work is a part where the printed parts were developed and tested using Pressurized Gas Release (PGR) method. Infill density, infill pattern and raster angle were manipulated to obtain the difference of void formation. From the experiment, gas bubbles were seen to form the least on 3D printed parts with 100% infill density, grid infill pattern and 45° raster angle. Similar findings were seen when compared between cuboid, cylinder and prism shape. This project concluded that 100% infill density, grid infill pattern and 45° raster angle result in the least void formation and difference in shape gave minimal effect on void formation on 3D printed parts.

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