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Prediction of mechanical properties of short kevlar fiber‐nylon‐6,6 composites
Author(s) -
Yu Z.,
Brisson J.,
AitKadi A.
Publication year - 1994
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.750150110
Subject(s) - materials science , composite material , kevlar , ultimate tensile strength , fiber , composite number , aramid , modulus , synthetic fiber , molding (decorative) , young's modulus , nylon 6 , polymer
Injection molded short Kevlar (DuPont) fiber/nylon‐6,6 composites have been studied. Fiber length and length distribution were measured as a function of processing variables. Critical fiber length was measured by an embedded single‐fiber method. Tensile modulus of the molded composites was predicted by an adapted classical lamination analogy. Fiber and matrix orientation factors, derived from X‐ray diffraction, were introduced to modify Kelly Tyson equation to estimate the composite tensile strength. It has been found that fiber length is dramatically shortened by the injection molding process, and is affected by processing conditions. Predictions gave reasonable agreement with data for tensile modulus and strength.