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Indentation testing of nuclear-waste glasses

Author:
W. J. Weber   Hj. Matzke   J. L. Routbort  


Journal:
Journal of Materials Science


Issue Date:
1984


Abstract(summary):

The fracture properties of several nuclear-waste glasses were determined by indentation techniques. The fracture toughness, KIc, was calculated from the measurement of radial cracks around Vickers diamond indentations as a function of applied load, and the results agree quite satisfactorily with values obtained by the Hertzian indentation technique. The fracture toughness of the waste glasses containing simulated fission products ranged from 0.9 to 1.1 MN m -3/2 in air, with slightly higher values measured in dry nitrogen. The hardness was also obtained from the Vickers indentations and the ratio H/ E was determined from the elastic recovery of Knoop diamond indentations. The values of E deduced from H and H/ E were within 15% of values measured by ultrasonic tests. The results along with the limitations of the different techniques are discussed in detail


Page:
2533-2545


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