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Displaying records 21 to 30 of 116 records.
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21. Calibrated Thermal Microscopy of the Tool-Chip Interface in Machining
Published: 4/1/2000
Authors: Michael Kennedy, Matthew A. Davies, Howard W Yoon, Timothy J Burns
Abstract: A critical parameter in predicting tool wear during machining and in accurate computer simulations of machining is the spatially-resolved temperature at the tool-chip interface. We describe the development and the calibration of a nearly diffraction- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821922

22. Calibrated Thermal Microscopy of the Tool-Chip Interface in Machining
Published: 8/1/2000
Authors: Howard W Yoon, Matthew A. Davies, Timothy J Burns, Michael Kennedy
Abstract: A critical parameter in predicting tool wear during machining and in accurate computer simulations of machining is the spatially-resolved temperature at the tool-chip interface. We describe the development and the calibration of a nearly diffraction- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841438

23. Calibrated thermal microscopy of the tool-chp interface in machining
Published: 1/1/2003
Authors: Matthew A. Davies, Howard W Yoon, Tony L Schmitz, Timothy J Burns, Michael Kennedy
Abstract: This paper presents the results of calibrated, microscopic measurement of the temperature fields at the tool-chip interface during the steady-state, orthogonal machining of AISI 1045 steel. The measurement system consists of a nearly diffraction lim ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821886

24. Calibrations of Current-to-Voltage Transimpedance Amplifiers Using Electrical Standards
Published: 6/13/2010
Authors: Howard W Yoon, George P Eppeldauer, Dean G Jarrett, Thomas C Larason, Wan-Seop Kim
Abstract: For photocurrent measurements with low uncertainties, a wide-dynamic range current-to-voltage converter traceable to resistance standards has been developed at the NIST. The design and calibration of the converter standard are described. For validat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905053

25. Comparison of a detector-based near-IR radiance-scale to an ITS-90 calibrated radiation thermometer
Published: 8/7/2011
Authors: George P Eppeldauer, Howard W Yoon, Jinan Zeng, Thomas C Larason
Abstract: Integrating-sphere-input InGaAs radiometers have been developed at the National Institute of Standards and Technology (NIST) to extend the detector-based calibrations from the Si range to the near-IR. These near-IR radiometers are used to determine t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906022

26. Comparison of the Absolute Detector-based Spectral Radiance Assignment with the Current NIST-Assigned Spectral Radiance of Tungsten-strip Lamps
Published: 1/1/2000
Authors: Howard W Yoon, Charles E Gibson
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104276

27. Comparison of the NIST radiance temperature scale with the detector-based radiance temperature scale from 1200 K to 2800 K
Published: 1/1/2004
Authors: David W Allen, George P Eppeldauer, Charles E Gibson, Howard W Yoon
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104294

28. Constitutive Model Data for Machining Simulation Using the NIST Pulse-Heat Kolsky Bar
Published: 1/1/2003
Authors: Eric Paul Whitenton, Michael Kennedy, Matthew A. Davies, Gerald V. Blessing, Brian S. Dutterer, Richard L. Rhorer, Howard W Yoon, Richard Joel Fields, D Basak, Timothy J Burns
Abstract: A new facility for dynamic material testing using a traditional Kolsky bar with the addition of controlled electrical-resistive pulse heating has been established at the National Institute of Standrds and Technology (NIST). Dynamic stress-strain data ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821954

29. Determination of Radiance Temperatures Using Detectors Calibrated for Absolute Spectral Power Response
Published: 6/1/1999
Authors: Howard W Yoon, Charles E Gibson
Abstract: We describe a method of directly determining blackbody radiance temperatures using filter detectors calibrated for absolute spectral power responsivity. The calibrations for absolute power are derived from a highly-accurate cryogenic radiometer, an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841360

30. Determination of Radiance Temperatures Using Detectors Calibrated for Absolute Spectral Power Responsivity
Published: Date unknown
Authors: Howard W Yoon, Charles E Gibson
Abstract: Our current spectral radiance and irradiance scales are derived from the radiance temperature determination of a blackbody at the freezing point of gold (GPBB) at 1337.33 K. The standard lamps disseminated for spectral irradiance have spectral output ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841515



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