SEM characterization of 3D printed ABS tensile specimens developed by fused deposition modelling

The present paper investigates the effect of raster angle and layer thickness on the tensile strength of Acrylonitrile butadiene styrene (ABS) developed via fused deposition modelling. Three levels of raster angles (0°, 30°, 60°) and layer thickness (0.127, 0.178, 0.20 mm) were chosen while keeping...

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Bibliographic Details
Main Authors: Prasad, Kaushik V., Adarsha, H., Pattnaik, Ashutosh, Shashank, B., Kiran, P. Sri Sai, Mallikarjuna, Mitai, Sandeep, B.
Format: Conference Proceeding
Language:English
Subjects:
ABS resins
Acrylonitrile butadiene styrene
Bearing capacity
Bonding strength
Crack propagation
Cracks
Deposition
Electron micrographs
Filaments
Fused deposition modeling
Mathematical models
Microcracks
Rapid prototyping
Raster
Tensile strength
Tensile tests
Thickness
Three dimensional printing
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Summary:The present paper investigates the effect of raster angle and layer thickness on the tensile strength of Acrylonitrile butadiene styrene (ABS) developed via fused deposition modelling. Three levels of raster angles (0°, 30°, 60°) and layer thickness (0.127, 0.178, 0.20 mm) were chosen while keeping the raster width constant as 0.40mm. Tensile tests reveal that load bearing capacity of the specimens increase when there is a finite angle between filaments and loading direction. Scanning Electron Micrographs (SEM) reveal that strong bonding between filaments and layers is necessary for good tensile strength apart from layer thickness. It is observed that micro-cracks and voids between filaments act as source of crack propagation leading to failure. Cooling of a layer is necessary before printing the next layer in order to prevent stacking defects.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5141582