Effect of raster angle on mechanical properties of 3D printed short carbon fiber reinforced acrylonitrile butadiene styrene

The most common additive manufacturing technique fused filament fabrication (FFF) suffers from inter-bead porosity that reduces mechanical properties. Inter-bead pores follow the raster angle, which causes anisotropic Yet, effects of angle on behavior short-carbon-fiber-reinforced (SCFR) thermoplastics are unclear. In this study, we performed tensile, flexural, and fracture toughness tests SCFR acrylonitrile butadiene styrene (ABS). Raster angles 0°, 15°, 30°, 45°, 60°, 75°, 90° were investigated. Tensile strength elastic modulus decreased by 22–35% for a change 0° to 15°. Flexural less sensitive angle. strengths at least 50% more than tensile same Whereas flexural is 15% modulus. Fracture showed non-linear relationship with Maximum was observed 60° rasters. Crack deflection as toughening mechanism.