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The Geometric Characterization of Rockwell Diamond Indenters



Jun-Feng Song, F Rudder, Theodore V. Vorburger, A Hartman, Brian R. Scace, J Smith


By using a stylus instrument, a series of calibration and check standards, and calibration and uncertainty calculation procedures, we have calibrated Rockwell diamond indenters with a traceability to fundamental measurements. The combined measurement uncertainties (95%) of the calibration are less than 1/10 of the tolerance requirements of calibration grade Rockwell diamond indenters. Our combined measurements uncertainties are: +/- 0.4um in least squares radius, +/- 0.01deg in cone angle, and +/- 0.023deg in holder axis alignment. The profile deviation from least squares radius and cone flank straightness is also calibrated. Engineering features of the diamond indenter's surface finish, such as surface roughness Ra and flat or sharp-shaped spherical tip are explored and quantified.
Proceedings Title
Proceedings of 13th World Congress of International Measurement Confederation (IMEKO XIII)
Conference Location
Torino, 1, IT


calibration, diamond indenter, HRC, microform, Rockwell hardness


Song, J. , Rudder, F. , Vorburger, T. , Hartman, A. , Scace, B. and Smith, J. (1994), The Geometric Characterization of Rockwell Diamond Indenters, Proceedings of 13th World Congress of International Measurement Confederation (IMEKO XIII), Torino, 1, IT (Accessed May 27, 2024)


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Created December 31, 1993, Updated October 12, 2021