VARIATION OF MECHANICAL AND TRIBOLOGICAL CHARACTERISTICS OF POLYMER PARTS REINFORCED WITH SHORT GLASS FIBERS

Mircea Aurelian RUSU, Adrian Constantin POPESCU, Corina BÂRLEANU, Ruxandra Alina CARAMITU, Dan LEORDEAN, Laura Monica RUSU, Mircea CIOAZĂ

Abstract


This study examines the mechanical and tribological behavior of polyamide 6.6 (PA6.6), in both neat and short glass fiber-reinforced (30%) forms, produced by injection molding. Tensile tests revealed a ~71.5% increase in mechanical strength for reinforced composites, accompanied by reduced elongation at break. Tribological evaluations using a pin-on-disc tribometer indicated significantly lower friction coefficients and wear rates for glass fiber-reinforced samples. SolidWorks Plastics simulations confirmed the correlation between fiber orientation, processing conditions, and material performance. The combined experimental and numerical approach demonstrates an effective strategy for optimizing the structural and tribological properties of injection-molded PA6.6 components, enabling their reliable application in engineering fields.


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