Volume 22 Issue 10
Oct.  2007
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ZHANG Hong, SONG Ying-dong. Study of energy release rates for crack deflection of ceramic matrix composites[J]. Journal of Aerospace Power, 2007, 22(10): 1730-1736.
Citation: ZHANG Hong, SONG Ying-dong. Study of energy release rates for crack deflection of ceramic matrix composites[J]. Journal of Aerospace Power, 2007, 22(10): 1730-1736.

Study of energy release rates for crack deflection of ceramic matrix composites

  • Received Date: 2006-09-19
  • Rev Recd Date: 2007-01-26
  • Publish Date: 2007-10-28
  • The energy release rates of different crack paths at interfaces were estimated by using virtual crack closure technique(VTTC).An energy criterion based on the energy release rates was used to study the crack deflection of ceramic matrix composites.Meanwhile, and the effects of elastic mismatch parameters α and β, the crack growth length a and the relative crack growth length ad/ap on the crack deflection were analyzed.The VCCT results were compared with those obtained by integration method.The results show that, VCCT can accurately calculate the energy release rates of crack growth, providing a reference for study of failure mechanism of ceramic matrix composites.

     

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