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Fracture studies on a polyacetal—new thermoplastic polyurethane blend
Author(s) -
John Reji,
Neelakantan N. R.,
Subramanian N.,
Nair E. M. S.
Publication year - 1992
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.760320105
Subject(s) - materials science , composite material , fracture toughness , fracture mechanics , fractography , ultimate tensile strength , thermoplastic polyurethane , fracture (geology) , strain energy release rate , brittleness , scanning electron microscope , bending , thermoplastic , strain rate , elastomer
Abstract Studies based on fracture mechanics have been made on polyacetal toughened with a synthesized thermoplastic polyurethane. The effects of elongation rate and defects like holes and notches on tensile properties have been investigated. Using three‐point bending specimens, fracture mechanics parameters such as strain energy release rate, G , Rice's contour integral, J , and fracture toughness, K have also been determined under plain stress conditions. The mechanical loss from the hysteresis curves, and ductile, brittle fractography using scanning electron microscopy have also been studied.