Abstract
In the present work, a sacrificial patterns (SP) for investment casting (IC) were prepared with three dimensional (3D) printing (by using fused deposition modelling (FDM) setup) from recycled high density polyethylene (HDPE) recovered from domestic waste reinforced with Al2O3 and SiC particles in different proportions. These SP were further used for preparation of sandwich composite material (SCM) as a novel process. Finally casted functional prototypes as SCM were investigated for surface hardness, porosity and grain size measurement supported by photomicrographs and scanning electron microscope (SEM), energy dispersive x-ray analysis (EDAX). The results of the study suggest that SCM prepared by proposed route have acceptable hardness (34.9 HV) and porosity (6.16%) for industrial applications.
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