LAUSR

Abstract This study aims to characterize the mechanical behavior of a wire rope in service and to predict the evolution of its damage, tensile tests carried out on the virgin and other artificially damaged specimens, by breaking the strands constituting the outer layer of the wire rope at different percentages. Then, a new approach of failure analysis and prediction of the damage was used. Serving of three damage models, one model is obtained through a modified version of unified theory and the two others are static damage models based on residual energy, this one is calculated using trapezoidal numerical integration, wich consists of calculating the area under the tensile curve, corresponds to each test. The results obtained allow us to characterize the mechanical behavior of the wire rope and to predict the evolution of the damage. Indeed, three phases of damage are determined to help predictive maintenance define the safety and maintenance intervals of the cable.