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JULIO 2020 - Volumen: 95 - Páginas: 412-417
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The purpose of this paper is to study and outline the effects of infill parameters (percentage and pattern) using fused deposition manufacturing on mechanical properties of PLA printed samples.Three infill patterns were tested (rectilinear, honeycomb and Hilbert curve) while infill percentage was tested at three levels (20, 60 and 90 per cent). The properties examined were tensile strength, tensile modulus, elongation, Charpy impact test, morphology of the fractures of tensile and impact test and thermo mechanical analysis. Also, a thermal analysis was done using differential scanning calorimetry to the raw polymer in order to determine the processing temperature.Results showed the influence of the filling parameters in 3D printing on the mechanical properties of the obtained part. The filling pattern greatly influences the mechanical properties of parts with low filling percentages. Honeycomb filling pattern is the one with better mechanical results.The complexity of the filling pattern influences on the processing time. Nozzle direction changes in complex patterns lengthen processing time.Results can significantly influence custom design and manufacturing of parts using material fused deposition modeling.
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