MULTIFRACTALITY OF TRANSVERSE CRACKING AND CRACKS' LENGTH DISTRIBUTION IN A CROSS-PLY LAMINATE UNDER FATIGUE

摘要

Matrix cracking in cross-ply laminates is analysed with an utilization of multifractal formalism in order to describe more precisely the stochastic character of a crack set evolution in a specimen under fatigue. In a study each transverse crack for a given loading history (number of cycles) is characterised by the crack position - co-ordinate along the specimen's axis - and by its length. Two sets of matrix cracks are described - for both edges of a single specimen under increasing number of loading cycles.