Mechanical evaluation of polymeric filaments and their corresponding 3D printed samples
作者： A.M. Oviedo , A.H. Puente , C. Bernal , E. Pérez
DOI: 10.1016/J.POLYMERTESTING.2020.106561
关键词: Fusion 、 Acrylonitrile butadiene styrene 、 Ultimate tensile strength 、 Materials science 、 Polylactic acid 、 Fracture mechanics 、 Izod impact strength test 、 3D printing 、 Bending 、 Composite material
摘要: Abstract 3D printing technologies permits to produce functional parts with complex geometries, optimized topologies or enhanced internal structures. The relationship between mechanical performance and manufacturing parameters should be exhaustively analyzed warrant the long term success of printed products. In this work, filaments based on acrylonitrile butadiene styrene (ABS), polylactic acid (PLA) acid/polyhydroxyalkanoate (PLA/PHA) was investigated also compared their corresponding samples. general, specimen dimensional deviations were found within tolerances defined by standard testing protocols. Density values revealed a high level filament fusion promoting nearly solid structure. exhibited improved tensile respect Tensile bending looked quite independent raster angle. Izod impact behavior increased, for ABS systems ±45° orientation. Quasi-static fracture tests displayed crack initiation resistance 0°/90° propagation observed specimens, through bonding inter-layers, suggests weak entanglements.
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