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Grinding Temperature Measurements in Magnesia-Partially-Stabilized Zirconia Using Infrared Spectrometry |
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| Authors: | Adam C. Curry Albert J. Shih Jin Kong Ronald O. Scattergood Sam B. McSpadden |
| Affiliation: | Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina 27695;Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109;Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina 27695;Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695;High Temperature Materials Laboratory, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 |
| Abstract: | Results of temperature measurements by analysis of the thermal emission spectra generated during grinding and subsequently transmitted through partially stabilized zirconia workpieces are presented. Portions of emitted visible and near-infrared spectra were collected with spectrometers. Source temperatures were determined by fitting the scaled spectrometer output spectra to blackbody curves. Simulations showed that the effective temperatures determined by this method will be strongly biased toward hot-spot (flash) temperatures, which are expected to occur at the grinding grit–workpiece interface. Hot-spot temperatures on the order of 3000 K were obtained for grinding with both SiC and diamond wheels. These high temperatures modify the grinding process and the phase content of grinding chips. |
| Keywords: | grinding zirconia: partially stabilized infrared techniques |