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Impact properties of short carbon fiber reinforced nylon 6.6
Author(s) -
Ishak Z. A. Mohd.,
Berry J. P.
Publication year - 1993
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760332207
Subject(s) - materials science , composite material , scanning electron microscope , volume fraction , fracture (geology) , fracture toughness , strain energy release rate , nylon 6 , fracture mechanics , toughening , fiber , toughness , polymer
The impact properties of injection‐molded nylon 6.6 composites containing different loadings of short carbon fibers have been studied using an instrumented falling weight impact tester (IFWIT). Analysis of the impact data using linear elastic fracture mechanics (LEFM) has enabled the evaluation of the critical strain energy release rate, G c . Instrumentation of the impact machine has facilitated the determination of another fracture mechanic parameter, the fracture toughness, K c . Both parameters are observed to increase with increasing volume fraction of fibers. Examination of fracture surfaces using scanning electron microscopy (SEM) has revealed that the main energy dissipative processes responsible for toughening the composites is the fiber pull‐out mechanism.