Fractographic Analysis of Surface Flaws in Glass


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Biaxial testing was used to get insight into the incidence of the surface flaw properties (size, shape) on the strength of float glass specimens. Grinding grooves, Vickers' indentations and scratches as defects were introduced at the surface of annealed float glass specimens. The machined and fractured surfaces were observed using optical and confocal microscopes. The influence of the flaw characteristics on the strength of glass was evaluated and analyzed in the light of the fracture mechanics.



Edited by:

J. Dusza, R. Danzer and R. Morrell




M. Kašiarová et al., "Fractographic Analysis of Surface Flaws in Glass", Key Engineering Materials, Vol. 290, pp. 300-303, 2005

Online since:

July 2005




[1] R.W. Rice: Monolithic and composite ceramics machining flaw - microstructure strength effects: model evaluation. J. Europ. Ceram. Soc. Vol. 22 (2002), pp.1411-1424.


[2] D. B. Marshall, B. R. Lawn and B. R. Evans: Elastic/plastic indentation damage in ceramics: The lateral crack system. J. Amer. Ceram. Soc. Vol. 15 (1982), pp.574-581.

[3] R. F. Cook and G. M. Pharr: Direct observation and analysis of indentation cracking in glasses and ceramics. J. Amer. Ceram. Soc. Vol. 73 (1990), pp.787-817.

[4] L. Chao and D. R. Shetty: Reliability analysis of structural ceramics subjected to biaxial flexure. J. Amer. Ceram. Soc. Vol. 74 (1990), pp.333-344.

[5] G. D. Quinn, L. K. Ives and S. Jahanmir: Fractography reveals machining cracks. Amer. Ceram. Soc. Bull. Vol. 6 (2003), pp.9101-9104.