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Weibull Statistical Analysis on Mechanical Properties in ZrO2 with SiC Additive

SiC 첨가한 ZrO2의 기계적 특성에 대한 와이블 통계 해석

  • Nam, Ki Woo (Dept. of Materials Science and Engineering, Pukyong Nat'l Univ.) ;
  • Kim, Seon Jin (Dept. of Mechanical Design Engineering, Pukyong Nat'l Univ.) ;
  • Kim, Dae Sik (TFT, Hi Air Korea, Co., Ltd.)
  • Received : 2015.02.05
  • Accepted : 2015.07.07
  • Published : 2015.09.01

Abstract

The Vickers hardness test is a common method used to characterize the hardness of ceramic materials. However, the hardness is not a deterministic value, but is a random variable. The objective of this paper is to investigate the statistical properties of the bending strength and a set of Vickers hardness values in single $ZrO_2$ and composite $ZrO_2/SiC$ with a SiC additive. In this work, we compare the characteristic value and variation with the results based on Weibull statistical analysis. The probability distributions of the bending strength and Vickers hardness agreed relatively well with the Weibull distribution. We evaluate the scale parameter and shape parameter in asreceived $ZrO_2$ and $ZrO_2/SiC$ composite ceramics, as well as in their heat treated ceramics.

Keywords

Weibull Statistical Analysis;Bending Strength;$ZrO_2$;$ZrO_2/SiC$ Composite Ceramics;Weibull Distribution

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Cited by

  1. Composites Ceramics by Different Shot Size vol.40, pp.12, 2016, https://doi.org/10.3795/KSME-A.2016.40.12.987
  2. Weibull Statistical Analysis on the Mechanical Properties of SiC by Immersion in Acidic and Alkaline Solutions vol.40, pp.9, 2016, https://doi.org/10.3795/KSME-A.2016.40.9.767