Effect of fused deposition modelling fabrication parameters on the tensile properties of acrylonitrile butadiene styrene
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Date
2018-06
Authors
Chua, Jing Ting
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Abstract
In this study, the effect of raster orientation (0./90', 30'/120' and 45'/135') and
printing temperature (220'C, 230'C, 240'C and 250'C) on the tensile properties of fused
deposition modelling (FDM) fabricated acrylonitrile butadiene styrene (ABS) were
investigated. The FDM specimen was fabricated and modelled according to the ASTM
D638 Type I for both mechanical test and finite element analysis (FEA) using ANSYS
software. Tensile properties were measured and employed further in FEA. The
morphological characteristics of the fractured surface of specimens were examined
using tabletop scanning electron microscopy (SEM). Thermal stability analysis on ABS
was also done using thermogravimetric analysis (TGA) from room temperature to 250'C.
The stress-strain curve, tensile strength, elongation at break, and Young’s modulus were
analysed. It was observed that significant influence of raster orientation and printing
temperature of FDM on tensile properties of the produced ABS samples. The FDM
fabricated ABS exhibited slightly ductile behaviour and becoming more obvious from
0'/90' to 45'/135'.The fractured surfaces of ABS fabricated at 0'/90'raster orientation
and 220'C, 230'C and 250'C printing temperature were smooth and flat, which indicated
brittle failure. Meanwhile, ABS fabricated at 30'/120' and 45'/135' raster orientation and 240'C printing temperature had rough and irregular fractured surface, which indicated
ductile failure. Thermal stability of ABS at 250'C was proved to be low. The best tensile
properties were found to be at raster orientation of 0'/90' and printing temperature of
240'C. It also observed that ANSYS simulation has good agreement with experimental
result and able to predict the tensile performance of FDM fabricated ABS.