Transition between brittle and ductile mode in loose abrasive grinding

Donald Golini; Stephen D. Jacobs

doi:10.1117/12.22829

1 November 1990 Transition between brittle and ductile mode in loose abrasive grinding

Donald Golini, Stephen D. Jacobs

Proceedings Volume 1333, Advanced Optical Manufacturing and Testing; (1990) https://doi.org/10.1117/12.22829
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

This paper examines the transition between brittle and ductile mode in loose abrasive microgrinding (grinding with micron and sub-micron sized abrasives). The work was directed specifically at understanding loose abrasive grinding dependency on slurry fluid chemistry and the swlace stresses that are introduced in the grInding process. Several slurry fluids were investigated including water, a homologous series of n-alcohols, and several other organics selected for various properties including molecular size and dielectric constant. Chemistry was found to play a major role in the process; in fact, by simply changing slurry fluid composition, it was possible to induce the transition from brittle fracture to ductile mode grinding in ULE (Corning Code 7971 Titanium Silicate Low Expansion Glass). Data revealed that the dependency ofloose abrasive grinding on slurry chemistry can best be explained as Rebinder-Westwood chemo-mechanical effects [1,2,3,4]. It was also observed that the grinding surface stresses, known as the Twyman effect, increased dramatically in the transition from brittle to ductile mode grinding.

Citation Download Citation

Donald Golini and Stephen D. Jacobs "Transition between brittle and ductile mode in loose abrasive grinding", Proc. SPIE 1333, Advanced Optical Manufacturing and Testing, (1 November 1990); https://doi.org/10.1117/12.22829

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