Abstract
Flaws introduced into physically tempered laths of glass with a Vickers indenter have been used in controlled fracture experiments in flexure. Provided the flaw length extended beyond the dimension of the indentation fracture always initiated from this site on bending. After making allowance for plastically induced residual stress fields about the indentation site it was possible to use this technique to determine the tempering level of the glass. It was also possible by varying the stress rate to determine the stress corrosion behaviour of these tempered glasses. The results were analysed in terms of a recent fracture mechanics treatment by Hagan et al1 of stress corrosion cracking in tempered glasses. This approach enabled the stress corrosion index n, in V = AKn to be determined. It was also observed that the extent of the fracture mirrors in these indented and subsequently fractured laths was a sensitive function of loading rate and environment. A simple relationship between the ratio of the surface to bulk dimensions of the fracture mirror in both materials is derived.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Hagan J.T., Swain M.V. and Field J.E. (1977) 4th Int. Fract. Conf. Proc. Waterloo, Canada (in press).
Zijlstra A.L. and Burggraaf A.J., J. Non-Cryst. Sol. 1 (1968) 49.
Brown W.F. and Srawley J.E., A.S.T.M. S.T.P. No. 410 (1967) 13.
Shah R.C. and Kobayashi A.S., A.S.T.M. S.T.P. No. 513 (1972) 3.
Marshall D.B. and Lawn B.R., J. Am. Ceram. Soc. 60 (1977) 86.
Swain M.V., Hagan J.T. and Field J.T., J. Mater. Sci. (1977) in press.
Hagan J.T., Swain M.V. and Field J.T., Glass Techn. (1977) in press.
Petrovic J.J., Jacobson L.A., Talty P.K. and Vasudevan A.K., J. Am. Ceram. Soc. 58 (1975) 113.
Swain M.V., J. Mater. Sci. H. (1976) 2345.
Marshall D.B. and Lawn B.R., J. Am. Ceram. Soc. (1977) in press.
Wiederhorn S.M., J. Am. Ceram. Soc. 52 (1969) 99.
Wiederhorn S.M. and Bolz L.H., J. Am. Ceram. Soc. 53 (1970) 543.
Kirchener H.P. and Walker R.E., Mat. Sci. and Eng. 8 (1971) 301.
Johnson J.W. and Holloway D.G., Phil. Mag. 14 (1966) 731.
Kerper M.J. and Scuderi T.G., Bull. Am. Ceram. Soc. 43 (1964) 622.
Mecholsky J.J., Freiman S.W. and Rice R.W., J. Am. Ceram. Soc. 57 (1974) 55.
Hagan J.T. and Swain M.V., to be published.
Swain M.V. and Hagan J.T., to be published.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1978 Plenum Press, New York
About this chapter
Cite this chapter
Swain, M.V., Hagan, J.T., Field, J.E. (1978). Indentation Induced Strength Degradation and Stress Corrosion of Tempered Glasses. In: Bradt, R.C., Hasselman, D.P.H., Lange, F.F. (eds) Flaws and Testing. Fracture Mechanics of Ceramics, vol 3. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7017-2_14
Download citation
DOI: https://doi.org/10.1007/978-1-4615-7017-2_14
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4615-7019-6
Online ISBN: 978-1-4615-7017-2
eBook Packages: Springer Book Archive