Abstract
The threshold for indentation cracking is established for a range of ceramic materials, using the techniques of scanning electron microscopy and acoustic emission. It is found that by taking into account indentation plasticity, currant theories may be successfully combined to predict threshold indentation loads and crack sizes. Threshold cracking is seen to relate to radial rather than median cracking.
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B. R. Lawn andA. G. Evans,J. Mater. Sci. 12 (1977) 2195.
C. M. Perrott,Wear 45 (1977) 293.
J. Lankford, ″Fracture Mechanics of Ceramics, Vol. 3, edited by R. C. Bradt, D. P. H. Hasselman and F. F. Lange (Plenum, New York, 1978) p. 245.
B. J. Hockey, ″The Science of Hardness Testing and its Research Applications″, edited by J. H. Westbrook and H. Conrad (American Society for Metals, Metals Park, Ohio, 1973) p. 30.
B. R. Lawn, T. Jensen andA. Arora,J. Mater. Sci. 11 (1976) 575.
B. R. Lawn andE. R. Fuller,ibid 10 (1975) 2016.
T. Sata, K. Takamoto andH. Yoshikawa,Bull. Jap. Soc. Prec. Eng. 3 (1969) 13.
J. Lankford andD. L. Davidson,J. Mater. Sci. 14 (1979) 1669.
B. J. Hockey, S. M. Weiderhorn andH. Johnson, ″Fracture Mechanics of Ceramics″, Vol. 3, edited by R. C. Bradt, D. P. Hasselman and F. F. Lange (Plenum, New York, 1978) p. 379.
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Lankford, J., Davidson, D.L. The crack-initiation threshold in ceramic materials subject to elastic/plastic indentation. J Mater Sci 14, 1662–1668 (1979). https://doi.org/10.1007/BF00569288
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DOI: https://doi.org/10.1007/BF00569288