Study on the design and execution of a short fiber reinforced polyamide part

Abstract

This article presents the stages and problems that can arise from the design to the realization of a part obtained through the process of injection. The model part used in the research is a part used in the automotive industry made on a large scale. The material from which the workpiece is made is a polymer that is part of the Polyamide class namely Polyamide 6.6 armed with short fiberglass (SGFR-PA 6.6). The fiberglass arming was made at a 30% rate, resulting in a significant increase in the mechanical characteristics of the workpiece. The validation of the flow in the injection mold was done using Moldflow Adviser™. Due to the contraction of the material, different problems of the injected parts may occur, which endanger their proper functioning. Measurements were done by using a GOM ATOS™ optical scanner. The scanned part was compared with the CAD model and the deviations were observed.