Abstract:
Additive Manufacturing is an automated manufacturing process based on layers for
making three dimensional scaled physical parts directly from 3D CAD data. A type
additive manufacturing named as Fused Deposition Modeling (FDM) is widely used
technology that provides functional prototypes in various thermoplastics. In FDM, filling
patterns, a parameter of path planning focused on deposition quality & fabrication and
build time. Filling patterns are of two types: External filling Patterns and Internal filling
patterns or Infills. Multiple patterns such as rectilinear, rectangular, triangular and
honeycomb, etc. are developed for both filling categories.
In this work, a heterogeneous infill strategy is used by choosing developed patterns in
order to optimize strength to weight ratio, material usage and build time for parts. All
possible patterns, as combination of infills for 3D printing, have been tested. The used
material and required built time for printing is noted from the slicing software used
during 3d printing process. The tensile testing is performed on the printed specimens to
calculate the strength to weight ratio. The values of yield stress for strength to weight
ratio are measured from tensile test. By comparing the obtained results, a printing
strategy with optimized solution based on maximum strength to weight ratio, minimum
material utilization and production time is recommended for FDM technology
