Water quality study on landfill effect near Pulau Burung landfill
Loading...
Date
2011-05-01
Authors
Hamira Mat Sirat
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
In this study, the effect of raster orientation (0o/90o, 30o/120o and 45o/135o) and printing temperature (220oC, 230oC, 240oC and 250oC) 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 250oC. 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 0o/90o to 45o/135o. The fractured surfaces of ABS fabricated at 0o/90o raster orientation and 220oC, 230oC and 250oC printing temperature were smooth and flat, which indicated brittle failure. Meanwhile, ABS fabricated at 30o/120o and 45o/135o raster orientation and 240oC printing temperature had rough and irregular fractured surface, which indicated ductile failure. Thermal stability of ABS at 250oC was proved to be low. The best tensile properties were found to be at raster orientation of 0o/90o and printing temperature of 240oC. It also observed that ANSYS simulation has good agreement with experimental result and able to predict the tensile performance of FDM fabricated ABS.