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Zhao Kang, Wang Hong, Yan Jun-hui, et al. HIGH TEMPERATURE NOTCH FLEXURE STRENGTH AND ITS PROBABILITY DISTRIBUTION OF Al2O3 /TiC CERAMICS[J]. Acta Materiae Compositae Sinica, 1999, 16(2): 125-128.
Citation: Zhao Kang, Wang Hong, Yan Jun-hui, et al. HIGH TEMPERATURE NOTCH FLEXURE STRENGTH AND ITS PROBABILITY DISTRIBUTION OF Al2O3 /TiC CERAMICS[J]. Acta Materiae Compositae Sinica, 1999, 16(2): 125-128.
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HIGH TEMPERATURE NOTCH FLEXURE STRENGTH AND ITS PROBABILITY DISTRIBUTION OF Al2O3 /TiC CERAMICS

  • Northwestern Polytechnical University, Xian 710072

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  • Received Date: December 17, 1997
  • Revised Date: April 27, 1998
    Abstract
  • Notch flexure strength of Al2O3 /TiC ceramics was tested at 20, 600and 800. Results show that the flexure strength keeps constant up to 600, and notch flexure strength can be calculated by equation(3). At 800, the flexure strength decreases, and the notch flexure strength doesn't obey equation (3) as the notch sensitivity decreases. The probability tests at high temperature show that the flexure strength and notch flexure strength follow Weibull distribution. The Weibull modules of various Kt are a constant at the same testing temperature. The dispersion of the values of flexure strength and notch flexure strength at 800 is lower than that at 20.
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