Overview of a fracture mechanics approach to some of the most frequently encountered matrix-dominated, sub-laminate cracks in epoxy-based composite laminates. By 'sub-laminate' , it is meant that the cracks are internal to the laminate, generally invisible macroscopically; but are much larger in size than those microcracks considered in the realm of micromechanics. The origin of sub-laminate cracks is assumed to stem from the coalescence of natural material flaws (also microcracks) which occur under a certain favorable laminate stress condition. Thus, the modelling of the mechanisms of sub-laminate crack initiation and propagation is essentially mechanistic and probabilistic in nature. Some specific results from several analytical /experimental investigations using graphite-epoxy laminates are presented and discussed in this paper.
Fracture mechanics of sublaminate cracks in composite laminates
Bruchmechanik von Sublaminat-Rissen in Schichtstoffen
1983
19 Seiten, 22 Bilder, 3 Tabellen, 58 Quellen
Aufsatz (Konferenz)
Englisch
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