Failure by slow crack growth of SiC-based tows: a Monte Carlo simulation

Published: 15 July 2021| Version 1 | DOI: 10.17632/cgrwmy4cb5.1
stephane mazerat


The data are related to a research article entitled “New insight into subcritical rupture of SiC-based bundles at intermediate temperatures (400-900 °C) under air: Simulating the sources of variability”. Supplementary data include the Monte Carlo simulation files for all different fibers, plus the Stress Probability Time diagrams extracted from these simulations. The file named “A evolution with temperature.xlsx” compiles the Arrhenius parameters for SCG of filaments and tows, whereas the file “Fiber type comparison.xls” is a comparison of the 9 fibers discussed in the manuscript: Nicalon NL101, NL207, Hi-Nicalon, Hi-Nialon type S, Tyranno grade S (8.5 and 11 µm mean diameter), Lox-M, ZMI, AM.


Steps to reproduce

Monte carlo simulate the stress and the strength for each filament of the bundle. Based on these parameters, their individual lifetime can be calculated. The tow if finally considered to fail when a given proportion of fiber have failed. The repetition of this task reveal the broad variability of tow time to failure, but also a scale effect: the stress exponent used for filament failure time calculation is larger than the stress exponent describing the tow lifetime.


Laboratoire des Composites Thermostructuraux


Ceramic Matrix Composite, Fatigue Crack Growth, Static Fatigue, Silicon Carbide Material, Application of Monte Carlo Method, Fiber Bundle