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Memorias de investigación
Artículos en revistas:
Numerical Simulation of the Fracture Behavior of Ti/SiC Composites Between 20ºC and 400ºC
Año:2007
Áreas de investigación
  • Materiales
Datos
Descripción
The fracture behavior of a Ti-6A14V matrix uniaxially reinforced with SiC fibers was analyzed between 20 degrees C and 400 degrees C using a multi scale approach that involved the finite element simulation of a three-point bend test on a notched beam of the composite. The material in front of the notch tip was discretized taking into account the actual fiber-matrix topology in the composite panels, while the rest of the beam was assumed to be homogeneous. The numerical simulations took into account the actual deformation and damage mechanisms experimentally observed (matrix plastic deformation, stochastic fiber fracture, and frictional sliding at the fiber/ matrix interface) using the appropriate finite element tools, and the corresponding fiber, matrix, and interfacial properties were independently obtained. The results of the numerical simulations were in good agreement with the experimental load-crack mouth opening displacement (CMOD) curves and reproduced accurately the actual deformation and fracture micromechanisms around the notch tip. Moreover, the apparent fracture toughness of the composite (computed from the maximum load and the initial notch length) was also very close to the experimental values, showing the potential of this multiscale approach to carry out "virtual" fracture tests in the computer once the physical mechanisms of deformation and fracture are included in the model and the corresponding micromechanical parameters are carefully measured.
Internacional
Si
JCR del ISI
Si
Título de la revista
METALL MATER TRANS A
ISSN
1073-5623
Factor de impacto JCR
1,278
Información de impacto
Volumen
38A
DOI
Número de revista
1
Desde la página
169
Hasta la página
179
Mes
ENERO
Ranking
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Participantes
  • Autor: Fco. Javier Llorca Martinez (UPM)
  • Autor: Carlos Daniel Gonzalez Martinez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Materiales Estructurales avanzados y nanomateriales
  • Departamento: Ciencia de los Materiales
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