Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Numerical Simulation of the Fracture Behavior of Ti/SiC Composites Between 20ºC and 400ºC
Year:2007
Research Areas
  • Materials
Information
Abstract
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.
International
Si
JCR
Si
Title
METALL MATER TRANS A
ISBN
1073-5623
Impact factor JCR
1,278
Impact info
Volume
38A
Journal number
1
From page
169
To page
179
Month
ENERO
Ranking
Participants
  • Autor: Fco. Javier Llorca Martinez (UPM)
  • Autor: Carlos Daniel Gonzalez Martinez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Materiales Estructurales avanzados y nanomateriales
  • Departamento: Ciencia de los Materiales
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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