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Fatigue crack propagation and damage evolution in PBT‐GF and SAN‐GF
Author(s) -
Pavšek Vojko,
Ehrenstein Gottfried W.
Publication year - 1996
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.10111
Subject(s) - dissipation , fracture mechanics , materials science , composite material , fracture (geology) , work (physics) , fiber , crack closure , structural engineering , physics , thermodynamics , engineering
Our earlier investigations of fatigue behavior in PBT‐GF and SAN‐GF with different fiber lengths have shown that fatigue crack propagation (FCP) can be described in terms of elastic‐plastic fracture mechanics. In this work it is shown that the influence of structural material parameters on the resistance to FCP correlates with the extent of energy dissipation at the crack tip. With increasing fiber length, the zone of energy dissipation is increased. By means of microscopic investigations, the prevailing damage in the zone of energy dissipation is identified as micro cracks in the matrix.