Origin and Detection of Microflaws in Glass

  • F. M. Ernsberger
Part of the Fracture Mechanics of Ceramics book series (FMOC, volume 1)


There are many sorts of glass products, and correspondingly many defects that might be regarded as “flaws.” Some of these affect only the appearance of the product, and are clearly not relevant to a conference on fracture mechanics. Others, such as an irregular wall thickness in a bottle, may affect the fracture behavior, but such obvious and macroscopic defects are not to be the concern of this review. We shall confine our attention to more-subtle defects, usually of microscopic size, especially those that are loosely categorized as “Griffith flaws.”


Crack Pattern Internal Flaw Sheet Glass Shrinkage Crack Microcrack Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    A. A. Griffith, Phil. Trans. A221, 163 (1920).Google Scholar
  2. 2.
    J. W. Cahn, R. J. Charles, Phys. Chem. Glasses 6, 181 (1965).Google Scholar
  3. 3.
    M. Watanabe, T. Moriya, Rev. Elect. Commun. Lab. 50 (1961).Google Scholar
  4. 4.
    F. M. Ernsberger, Phys. Chem. Glasses 10, 240 (1969).Google Scholar
  5. 5.
    L. L. Sperry, unpublished.Google Scholar
  6. 6.
    F. M. Ernsberger, Proc. Roy. Soc. A257, 213 (1960).CrossRefGoogle Scholar
  7. 7.
    J. E. Gordon, D. M. Marsh, M. Parratt, ibid. A249, 65 (1959).Google Scholar
  8. 8.
    F. M. Ernsberger, in Advances in Glass Technology (Plenum Press, New York, 1962), page 511 ff.Google Scholar
  9. 9.
    W. F. Thomas, Phys. Chem. Glasses 1 4 (1960).Google Scholar
  10. 10.
    W. Brearley, D. G. Holloway, Phys. Chem. Glasses 4, 69 (1963).Google Scholar
  11. 11.
    R. M. Tichane, Glass Technol. 7, 26 (1966).Google Scholar

Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • F. M. Ernsberger
    • 1
  1. 1.PPG Industries, Inc.USA

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