Int J Performability Eng ›› 2021, Vol. 17 ›› Issue (7): 619-626.doi: 10.23940/ijpe.21.07.p6.619626

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Estimation of Wire Rope Reliability by Two Analytical Approach

Youssef Bassira,b,*, Achraf Wahida,b, Abdelkarim Kartounib, and Mohamed ELghorbaa   

  1. aNational School of Electricity and Mechanics, Hassan II University of Casablanca, BP 8118, Morocco;
    bFaculty of Sciences Ben M'Sik, University Hassan II of Casablanca, BP 7955, Morocco
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Abstract: The purpose of our work is to find an analytical model capable of estimating the degradation state of a 19x7 non-rotating wire rope. This model is based on experimental data obtained from static tensile tests on artificially damaged specimens (wire and strand). The wire rope performance is linked to a statistical parameter called reliability. For this purpose, two reliability models have been proposed. Indeed, the first is a majority logic parallel series model (block system) that takes into consideration the wire damage that influences the strand, which in turn affects the behaviour of the whole rope. The second is a majority logical series model where only the layer arrangement and the deterioration of the constituent strands are considered. The results of the two analytical models indicate a significant agreement with the experimental results.

Key words: non-rotating rope, reliability, life fraction, ultimate residual strength.