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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Analýza porušení systému matrice – vlákno
 Klusák, Jan ; Knésl, Zdeněk
Conditions of damage initiation in fibre composite materials are analysed in the paper. The main objective of the presentation is to quantify the influence of fibre-matrix material mismatch on failure critical stress under which a crack is initiated in the vicinity of a free fibre end. The considerations are derived from the knowledge of the stress state caused by the existence of the bi-material interface. The step change of material properties in the interface leads to singular peak of stresses, which may be responsible for crack initiation and consequently for failure of the structure. The singular stress state near the interface is analysed by means of generalized linear elastic fracture mechanics and conditions of crack initiation are assessed. On the basis of the results the question of interfacial debonding between the fibre and matrix is discussed.
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