Fiber degradation of injection molded fiber reinforced polystyrene has been analyzed using a statistical approach Results showed that fiber concentration as well as injection speed are responsible for the onset of fiber degradation. The same experimental design has been used to evaluate the effects of injection processing parameters on mechanical properties of molded parts. Results have been used to generate a statistical model to predict fiber degradation and mechanical properties using the most significant parameters identified in the statistical analysis. The statistical approach has proven to be satisfactory for the analysis of fiber attrition during the injection molding process.
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