Abstract
Size effects in abrasive processes are considered in terms of both the size of the abrasive grain and the size of the undeformed chip. On the basis of experimental results with grinding wheels and coated abrasives, it is shown that variations in specific cutting energy with abrasive grainsize and undeformed chip thickness can be attributed to the relative contributions of sliding, ploughing and chip formation energies. Experimental results are presented too for single-point cutting which show the effect of undeformed chip thickness on the extent of ploughing and on the fraction of cut material actually removed as a chip.
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