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Effect of spherical pores on the strength of a polycrystalline ceramic

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Abstract

Bending tests on a ceramic material, lead zirconate-titanate, with varying amounts of porosity, show that the decrease in strength due to spherical pores is much less than would be expected from the stress concentration factor. Using the Weibull probabilistic approach to brittle strength, it is shown that reasonable predictions may be made for the median strength for porosity up to about ten percent.

Résumé

Les essais de flexion sur un matériau céramique: zirconate-titanate de plomb, avec des quantités variables de porosités, montrent que la diminution de la résistance due à la porosité est plus faible que celle donnée par le facteur de concentration de contraintes. En utilisant la méthode statistique de Weibull pour la résistance fragile, il est montré que des prévisions raisonables peuvent être faites pour déterminer la résistance médiane pour une porosité jusqu'aux environs de dix pourcents.

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References

  1. W. Weibull, Ingvetenskakad. Handl., No. 151, Stockholm (1939).

  2. Ö. Vardar and I. Finnie, International Journal of Fracture, 11 (1975) 495.

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  3. J. N. Goodier, Transactions ASME (Journal of Applied Mechanics), 55 (1933) 39.

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  4. R. Jaffee, W. R. CookeJr. and H. Jaffee, Piezoelectric Ceramics, Academic Press, London and New York (1971) 146.

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  5. E. Y. Robinson and I. Finnie, Proc. 1969 Colloque de geotechnique, Toulouse, France, published by INSA, Toulouse (1971).

    Google Scholar 

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of California, 94720, Berkeley, California, USA

    Ö. Vardar & I. Finnie

  2. Department of Materials Science and Engineering, University of California, 94720, Berkeley, California, USA

    D. R. Biswas & R. M. Fulrath

  3. the Materials and Molecular Research Division, Lawrence Berkeley Laboratory, University of California, 94720, Berkeley, California, USA

    D. R. Biswas & R. M. Fulrath

Authors
  1. Ö. Vardar
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  2. I. Finnie
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  3. D. R. Biswas
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  4. R. M. Fulrath
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Vardar, Ö., Finnie, I., Biswas, D.R. et al. Effect of spherical pores on the strength of a polycrystalline ceramic. Int J Fract 13, 215–223 (1977). https://doi.org/10.1007/BF00042561

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  • DOI: https://doi.org/10.1007/BF00042561

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