Abstract
The tensile behavior of non-laminated and laminated CFRP straps composed of up to 100 layers was numerically and analytically investigated. The failure mode in non-laminated straps changed at 20–30 layers from brittle and sudden rupture of the outermost layer to progressive rupture starting from the innermost layer, due to the different non-uniform strain distributions across the layers. Non-laminated straps showed a significantly higher load-bearing efficiency for layer numbers higher than 20 and exhibited lower sensitivity to tape anisotropy and friction at the strap/pin interface than laminated straps. An empirical model was established to estimate the ultimate load of non-laminated straps with up to 100 layers and an analytical model was derived to predict the load-bearing efficiency of laminated straps, taking into account the strap anisotropy and friction at the strap/pin interfaces.
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