Effects of workpiece properties on material removal process and damage tolerance in ceramic grinding
Conference
·
OSTI ID:471992
- National Institute of Standards and Technology, Gaithersburg, MD (United States)
Studies investigating the correlation between grinding forces and workpiece properties for 19 different structural ceramics are reported. Hardness values were measured with a standard Vickers hardness test. Toughness curves were characterized with an indentation strength technique and a fracture mechanics analysis. Normal and tangential grinding forces were measured. Experimental results were compared to predicted results from the Evans-Marshall model. The major results of the study were: (1) an equation correlating grinding force with hardness and toughness; (2) for materials whose toughness increases with crack size, short-crack toughness provides a better indication of machining response; and (3) structural ceramics with steeply rising toughness curves show superior damage tolerance and relatively little strength loss even under very aggressive grinding conditions.
- OSTI ID:
- 471992
- Report Number(s):
- CONF-960677--
- Country of Publication:
- United States
- Language:
- English
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