Role of competition between slip and twinning in nanoscale deformation of sapphire

@inproceedings{Tymiak2009RoleOC,
  title={Role of competition between slip and twinning in nanoscale deformation of sapphire},
  author={N. I. Tymiak and Dariusz Chrobak and William W. Gerberich and Ormond C. R. Warren},
  year={2009}
}
Insights into the initiation of plasticity under contact loading of $A$ and $M$ planes of sapphire are provided by finite element analysis of the resolved shear stress acting on basal slip and basal twinning systems and by the evaluation of acoustic emission signals associated with the onset of plasticity. The analysis of acoustic emission activity utilizes wavelet-based signal representation in the joint time-frequency domain. The proposed model invoking loading-rate-dependent competition… CONTINUE READING