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Numerical analysis of Hydrogen embrittlement ofhigh strength steels using Monte Carlo method

Auteurs : Soumia Ourrad, F. Javier Belzunce, Youcef Houmadi, Abdelkader Ziadi
Année : 2016
Domaine : Sciences des matériaux
Type : Communication
Conférence: 7th African Conference on Non Destructive Testing ACNDT 2016 & the 5th International Conference on NDT and Materials Industry and Alloys (IC-WNDT-MI)
Résumé en PDF : (résumé en pdf)
Fulltext en PDF : (.pdf)
Mots clés : hydrogen embrittlement, the probabilistic simulation method of Monte Carlo, spatial variability.

Résumé :

A probabilistic approach has been applied tohydrogen desorption phenomena in the wire rod for pre-stressedconcrete. The phenomena was treated in a deterministic study byCarneiro in 2010 , this work aims to reflect uncertainty propertyof the material of a high carbon steel such as effective diffusioncoefficient (De)and concentration parameters(C). Aprobabilistic simulation method of Monte Carlo was used todetermine the contribution of each random variable on thevariability of reduction in area in our case the limit state criteriarequired in the study is reduction in area parameter must begreater than or equal to 30% (Carneiro, 2010). Afterwards westudy the influence of parameters that govern the phenomenondesorption hydrogen and dispersion of the parameters whileoptimizing calculative time.