12 papers
A phase-field model for microbiologically influenced corrosion
S. Kovacevic, E. MartÃnez-Pañeda
A phase-field-based reaction-diffusion corrosion model is developed to predict microbially influenced corrosion (MIC) in metal alloys, with a focus on anaerobic conditions and sulf…
Coupled thermo-chemo-mechanical phase field-based modelling of hydrogen-assisted cracking in girth welds
L. Castro, Y. Navidtehrani. C. Betegón, E. MartÃnez-Pañeda
A new computational framework is presented to predict the structural integrity of welds in hydrogen transmission pipelines. The framework combines: (i) a thermo-mechanical weld pro…
A neural network machine-learning approach for characterising hydrogen trapping parameters from TDS experiments
N. Marrani, T. Hageman, E. MartÃnez-Pañeda
The hydrogen trapping behaviour of metallic alloys is generally characterised using Thermal Desorption Spectroscopy (TDS). However, as an indirect method, extracting key parameters…
A generalised framework for phase field-based modelling of coupled problems: application to thermo-mechanical fracture, hydraulic fracture, hydrogen embrittlement and corrosion
Y. Navidtehrani, C. Betegón, E. MartÃnez-Pañeda
We present a novel, generalised formulation to treat coupled structural integrity problems by combining phase field and multi-physics modelling. The approach exploits the versatili…
Pull-off strength of mushroom-shaped fibrils adhered to rigid substrates
C. Betegón, C. RodrÃguez, E. MartÃnez-Pañeda +1
The exceptional adhesion properties of biological fibrillar structures -- such as those found in geckos -- have inspired the development of synthetic adhesive surfaces. Among these…
Virtual failure assessment diagrams for hydrogen transmission pipelines
J. Wijnen, J. Parker, M. Gagliano +1
We combine state-of-the-art thermo-metallurgical welding process modelling with coupled diffusion-elastic-plastic phase field fracture simulations to predict the failure states of…