117 citations · 405 across the 7 of their papers we have counts for
9 papers
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…