Prediction of tensile strength for sandwich injection molded short-glass-fiber reinforced thermoplastics
Keywords:sandwich injection molding, short-fiber reinforced composites, tensile strength, fiber orientation distribution, fiber length distribution
AbstractThis present paper provides a modified rule-of-mixtures relationship which allows for the calculation of ultimate tensile strength (UTS) as a function of the area fraction between skin and core layers.The effects of fiber length and fiber orientation within the skin and core layers on the tensile strength of conventional and sandwich injection molded short-glass-fiber reinforced polypropylene have been studied in detail. The present theory is then applied to existing experimental results and the agreement is found to be satisfactory.
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