Abstract
IT was reported recently1 that the major stress-raising defects on the surface of freshly drawn fibres of glass are visible, local defects which arise through the interaction of the hot glass with dust particles or other contamination. In that work very approximate values of the tensile stress which small areas of the surface, free from visible defects, would withstand without fracture were obtained. This communication is to report some results of further experiments to measure the actual breaking strengths of ‘defect-free’ samples of several commercial glasses.
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References
Holloway, D. G., Phil. Mag., 4, 1101 (1959).
Freeman, J. G., Phil. Mag., 37, 855 (1946).
Thomas, W. F., Phys. Chem. of Glasses, 1, 4 (1960).
Otto, W. H., J. Amer. Ceram. Soc., 35, 122 (1955).
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HOLLOWAY, D., HASTILOW, P. High Strength Glass. Nature 189, 385–386 (1961). https://doi.org/10.1038/189385a0
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DOI: https://doi.org/10.1038/189385a0
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