MECHANICAL BEHAVIOUR OF DAMAGED CENTRAL CORE STRAND CONSTITUTING A STEEL WIRE ROPE HOIST UNDER THE EFFECT OF A STATIC LOAD

The main objective of this study is to predict the evolution of damage of the central core (strand) that represent the heart of a wire rope, based on simple experimental tensile test conducted on virgin samples and others artificially damaged by breaking wires constituting the samples at different percentages. The experimental results obtained have allowed us to follow the evolution of the damage and quantify it. Thereafter, it was possible to identify three stages of damage. Therefore, be able to intervene in time for predictive maintenance. This study also includes a correlation between two methods of calculating the damage namely static damage and damage by unified theory and this by analogy to cyclical behavior. The comparison shows good agreement.