2024/04/28 by L. Cupertino-Malheiros, Tapas Kumar Mandal, Cupertino-Malheiros, L. +5 · 3 citations
Engineering · Materials Science · #Applied Physics (physics.app-ph) #Chemical Physics (physics.chem-ph) #Computational Engineering #FOS: Computer and information sciences #FOS: Physical sciences #Finance #Hydrogen embrittlement and corrosion behaviors in metals #Materials Science (cond-mat.mtrl-sci) #Mechanical Failure Analysis and Simulation #Nuclear Materials and Properties #and Science (cs.CE)
paper · pdf · doi:10.48550/arxiv.2404.18223
openalex publication_date 2024/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Combined experiments and computational modelling are used to increase understanding of the suitability of the Single-Edge Notch Tension (SENT) test for assessing hydrogen embrittlement susceptibility. The SENT tests were designed to provide the mode I threshold stress intensity factor (Kth) for hydrogen-assisted cracking of a C110 steel in two corrosive environments. These were accompanied by hydrogen permeation experiments to relate the environments to the absorbed hydrogen concentrations. A coupled phase-field-based deformation-diffusion-fracture model is then employed to simulate the SENT tests, predicting Kth in good agreement with the experimental results and providing insights into the hydrogen absorption-diffusion-cracking interactions. The suitability of SENT testing and its optimal characteristics (e.g., test duration) are discussed in terms of the various simultaneous active time-dependent phenomena, triaxiality dependencies, and regimes of hydrogen embrittlement susceptibility.