Phase-field simulation of anisotropic crack propagation in ferroelectric single crystals: effect of microstructure on the fracture process

Author (s): Abdollahi, A and Arias, I
Journal: Modelling and Simulation in Material Science and Engineering

Volume: 19, Issue 7
Pages: 1 – 13
Date: 2011

Abstract:
Crack propagation during the indentation test of a ferroelectric single crystal is simulated using a phase-field model. This model is based on variational formulations of brittle crack propagation and domain evolution in ferroelectric materials. Due to the high compressive stresses near the indenter contact faces, a modified regularized formulation of the variational brittle fracture is coupled with the material model to prevent crack formation and interpenetration in the compressed regions. The simulation results show that the radial cracks
perpendicular to the poling direction of the material propagate faster than the parallel ones, which is in agreement with experimental observations. This anisotropy in the crack propagation is due to interactions between the material microstructure and the radial cracks, as captured by the phase-field simulation.

Journal paper (from the publisher)  
UPCommons page Link  

Bibtex:

	
@article{2011-MSMSE-AA,
  author={Abdollahi, A. and Arias, I.},
  title={Phase-field simulation of anisotropic crack propagation in ferroelectric single crystals: effect of microstructure on the fracture process},
  journal={Modelling and Simulation in Materials Science and Engineering},
  volume={19},
  number={7},
  pages={074010},
  url={http://stacks.iop.org/0965-0393/19/i=7/a=074010},
  year={2011},

}