2026-04-28T11:35:18Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/56662021-11-02T12:04:40Zcom_10259_4201com_10259_5086com_10259_2604col_10259_4505

00925njm 22002777a 4500 dc Martínez Pañeda, Emilio author Díaz Portugal, Andrés author Wright, Louise author Turnbull, Alan author 2020-08 We present a generalised framework for resolving the electrochemistry-diffusion interface and modelling hydrogen transport near a crack tip. The adsorption and absorption kinetics are captured by means of Neumann-type generalised boundary conditions. The diffusion model includes the role of trapping, with a constant or evolving trap density, and the influence of the hydrostatic stress. Both conventional plasticity and strain gradient plasticity are used to model the mechanical behaviour of the solid. Notable differences are found in the estimated crack tip hydrogen concentrations when comparing with the common procedure of prescribing a constant hydrogen concentration at the crack surfaces. 0010-938X http://hdl.handle.net/10259/5666 10.1016/j.corsci.2020.108698 Hydrogen Diffusion Finite element analysis Environmentally assisted cracking Trapping Generalised boundary conditions for hydrogen transport at crack tips