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Prediction of failure initiation in polypropylene with glass beads
Author(s) -
Asp L. E.,
Sjögren B. A.,
Berglund L. A.
Publication year - 1997
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.10256
Subject(s) - materials science , composite material , polypropylene , cavitation , tacticity , residual stress , finite element method , thermal , polymer , structural engineering , polymerization , physics , mechanics , engineering , meteorology
The effect of glass bead content and residual stresses on failure initiation in isotactic polypropylene composites has been investigated by finite element analysis for the cases of interfacial debonding, plastic yielding, and cavitation. Residual thermal stresses are demonstrated to have a large effect on global failure initiation stress. Yielding and cavitation occur at higher global stresses than debonding. Modeling results, as well as previous experimental data, support debonding as the initial failure mechanism.