Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
802394 | Probabilistic Engineering Mechanics | 2011 | 6 Pages |
Abstract
A stochastic analysis of hydrogen-assisted fatigue crack growth in steel plates is presented. First, a simplified deterministic model of the process is proposed. It captures the basic empirical property that the influence of hydrogen diminishes, as the crack growth rate increases. However, it only applies to cases, when diffusion is rate limiting. Next, the model parameters are randomized to reflect the uncertainty inherent in the physical situation. On the basis of the obtained stochastic equation, probabilistic moments of the time, in which the crack reaches a critical length, are computed. Theoretical results are illustrated by a numerical example.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
P. HoĊobut,