A numerical model for the accumulation of transverse cracks in a composite laminate subjected to tensile fatigue loading

摘要: Abstract When the total thickness of longitudinal layers in a cross-ply laminate is much greater than that transverse layers, damage distribution carbon/epoxy tensile specimen subjected to fatigue loading not homogeneous across its width. The crack density function both distance from one edge and number cycles. A general partial differential equation governing this kind damage, regarded as cycles, has been derived. Two special cases are considered; they lead simplified non-linear traffic on hand, Fick other. Experimental data shown obey either form depending whether it early or later part life which interest. Partial identification procedures pertaining proposed.