A New Theory of Non-Destructive Inspection Based on Fracture Mechanics and Fracture Statistics

  • Y. Matsuo
  • K. Kitakami
  • S. Kimura
Part of the Fracture Mechanics of Ceramics book series (FMOC, volume 10)


Since ceramics is a typical brittle material, it is very important how to guarantee its strength reliability. In these years, Weibull’s statistics, the proof test and the non-destructive inspection have been used for the above purpose. In this work, the statistical theory of nondestructive inspection (NDI) is presented considering the distribution functions of the fracture-location and the flaw-size at fracture origin, which are derived from the statistical theory of fracture-location (OhFinnie’s theory) combined with competing risk theory and fracture mechanics. It is pointed out that one can select a screening-size only if the assumed stress field in N.D.I. is the same as the one in real loading. Furthermore, N.D.I. should be carried out within a definite region, called as a screening region, bordered by “N.D.I.-line” calculated from the joint cumulative distribution function.


Probability Density Function Fracture Criterion Fracture Location Fracture Probability Joint Probability Density Function 
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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • Y. Matsuo
    • 1
  • K. Kitakami
    • 2
  • S. Kimura
    • 1
  1. 1.Department of Inorganic Materials, Faculty of EngineeringTokyo Institute of TechnologyOokayama,Meguro-ku, TokyoJapan
  2. 2.Canon Research CenterAtsugi, KanagawaJapan

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