Volume 4, Issue 6

Application of Student and Weibull statistical distributions on experimental tensile test results of steel wires extracted from antigyratory wire rope (19x7).

Author

N.Mouhib1*, H.Ouaomar1, M.Lahlou1, M.Barakat2 and M. El Ghorba1

Abstract

Throughout the life of a wire rope, the wires that make up this cable are subjected to high mechanical stress indicating a loss of the original force, which sometimes leads to very rapid deterioration leading to sudden rupture. Therefore, they must meet the strictest safety standards in their use because every failure causes material and immaterial damages. The interest of the present work is to apply two different statistical distributions; Student distribution to select the most reliable results and Weibull distribution to define probability of survival and the probability of failure (Reliability an damage of Weibull). As result of this study, confidence interval is determined for tensile test results and the superposition of the probability of survival and the probability of failure for both maximum stress and elastic stress curves allowed us to distinguish the elastic zone which is[0, 1850], the stable plastic zone [1850, 2250] and the unstable plastic zone [2240,2300] to intervene in time for a predictive maintenance.

DOI

https://doi.org/10.62226/ijarst20150649

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