Abstract
Hydrogen-assisted fatigue crack growth (corrosion-fatigue) is studied in corner cracks emanating from holes placed in plates under tensile loading, comparing the results with those obtained in the case of fatigue in air. To this end, numerical modeling has been carried out to evaluate the crack front advance based on the Paris equation and the stress intensity factor (SIF) obtained by Raju and Newman. There is a preferential crack path, the approach to it being quicker for the case of fatigue in air than for the case of corrosion-fatigue.
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