159 citations · 564 across the 9 of their papers we have counts for
10 papers
A computational framework to predict the spreading of Alzheimer's disease
A. Vazquez-Palomo, C. Betegón, J. Weickenmeier +1
Alzheimer's disease is characterised by the spreading of misfolded proteins and progressive structural changes in the brain. Despite significant clinical research, understanding ho…
Griffith-based analysis of crack initiation location in a Brazilian test
Y. Navidtehrani, C. Betegón, R. W. Zimmerman +1
The Brazilian test has been extremely popular while prompting significant debate. The main source of controversy is rooted in its indirect nature; the material tensile strength is…
A simple and robust Abaqus implementation of the phase field fracture method
Yousef Navidtehrani, Covadonga Betegón, Emilio Martínez-Pañeda
The phase field fracture method is attracting significant interest. Phase field approaches have enabled predicting - on arbitrary geometries and dimensions - complex fracture pheno…
A unified Abaqus implementation of the phase field fracture method using only a user material subroutine
Yousef Navidtehrani, Covadonga Betegón, Emilio Martínez-Pañeda
We present a simple and robust implementation of the phase field fracture method in Abaqus. Unlike previous works, only a user material (UMAT) subroutine is used. This is achieved…
Analysis of the influence of microstructural traps on hydrogen assisted fatigue
Rebeca Fernández-Sousa, Covadonga Betegón, Emilio Martínez-Pañeda
We investigate the influence of microstructural traps on hydrogen diffusion and embrittlement in the presence of cyclic loads. A mechanistic, multi-trap model for hydrogen transpor…
Gradient-enhanced statistical analysis of cleavage fracture
Emilio Martínez-Pañeda, Sandra Fuentes-Alonso, Covadonga Betegón
We present a probabilistic framework for brittle fracture that builds upon Weibull statistics and strain gradient plasticity. The constitutive response is given by the mechanism-ba…
A cohesive zone framework for environmentally assisted fatigue
Susana del Busto, Covadonga Betegón, Emilio Martínez-Pañeda
We present a compelling finite element framework to model hydrogen assisted fatigue by means of a hydrogen- and cycle-dependent cohesive zone formulation. The model builds upon: (i…
Strain gradient plasticity modeling of hydrogen diffusion to the crack tip
Emilio Martínez-Pañeda, Susana del Busto, Christian F. Niordson +1
In this work hydrogen diffusion towards the fracture process zone is examined accounting for local hardening due to geometrically necessary dislocations (GNDs) by means of strain g…
Modeling damage and fracture within strain-gradient plasticity
E. Martínez-Pañeda, C. Betegón
In this work, the influence of the plastic size effect on the fracture process of metallic materials is numerically analyzed using the strain-gradient plasticity (SGP) theory estab…
Non-local plasticity effects on notch fracture mechanics
Emilio Martínez-Pañeda, Susana del Busto, Covadonga Betegón
We investigate the influence of gradient-enhanced dislocation hardening on the mechanics of notch-induced failure. The role of geometrically necessary dislocations (GNDs) in enhanc…