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Search Publications by: Howard W. Yoon (Fed)

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Displaying 126 - 141 of 141

Calibrated Thermal Microscopy of the Tool-Chip Interface in Machining

August 1, 2000
Author(s)
Howard W. Yoon, Matthew A. Davies, Timothy J. Burns, Michael Kennedy
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

Calibrated Thermal Microscopy of the Tool-Chip Interface in Machining

April 1, 2000
Author(s)
Michael Kennedy, Matthew A. Davies, Howard W. Yoon, Timothy J. Burns
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

A Comparison of ITS-90, Above the Silver Point, as Realised by NIST and NPL

January 1, 2000
Author(s)
Graham Machin, Charles E. Gibson, B. Carol Johnson, Howard Yoon
A comparison of the radiance temperature scales between 1000 C and 2700 C has been performed between the National Physical Laboratory (NPL) and the National Institute of Standards and Technology (NIST). Two transfer radiation thermometers, of identical

Micro-NCT of the Tool-Chip Interface in Machining

January 1, 2000
Author(s)
Timothy J. Burns, Matthew A. Davies, Michael Kennedy, Howard Yoon
Machining is a ubiquitous manufacturing process with tremendous economic impact. For example, Dr. Eugene Merchant, who is a founder of the scientific treatment fo machining processes, recently estimated that approximately 15 % of the value of all

The Fifth SeaWiFS Intercalibration Round-Robin Experiment (SIRREX-S), July 1996

October 1, 1999
Author(s)
Bettye C. Johnson, Howard W. Yoon, Sally S. Bruce, Ping-Shine Shaw, E A. Thompson, S B. Hooker, R Barnes, R Eplee, S Maritorena, J Mueller
This report documents the fifth Sea-viewing Wide Field-of-view Sensor (SeaWiFS) Intercalibration Round-Robin experiment (SIRREX-5), which was held at the National Institute of Standards and Technology (NIST) on 23 July to 30 July 1996. The agenda for

Radiometric Measurement Comparisons Using Transfer Radiometers in Support of the Calibration of NASA's Earth Observing System (EOS) Sensors

September 1, 1999
Author(s)
James J. Butler, B. Carol Johnson, Steven W. Brown, Howard Yoon, R Barnes, B L. Markham, S F. Biggar, E F. Zalewski, P R. Spyak, J W. Cooper, F Sakuma
EOS satellite instruments operating in the visible through the shortwave infrared wavelength regions (from 0.4 um to 2.5 um) are calibrated prior to flight for radiance using integrating spheres at a number of instrument builder facilities. The

Volume 4, The 1997 Prelaunch Radiometric Calibration of Sea WiFS

April 1, 1999
Author(s)
Bettye C. Johnson, Howard W. Yoon, Sally S. Bruce, Ping-Shine Shaw, E A. Thompson, S B. Hooker, R Eplee, R Barnes, S Maritorena, J Mueller
The Sea-viewing Side Field-of-view Sensor (SeaWiFS) was originally calibrated by the instrument's manufacturer, Santa Barbara Research Center (SBRC), in November 1993. In preparation for an August 1997 launch, the Sea WiFS Project and the National

A 400 nm to 2500 nm Absolute Spectral Radiance Comparison Using Filter Radiometers

October 1, 1998
Author(s)
Howard W. Yoon, Bettye C. Johnson, D Kelch, S F. Biggar, P R. Spyak
An integrating sphere source developed by MTL Systems, Inc. was calibrated for them by a commercial standards laboratory traceable to the National Institute of Standards and Technology (NIST), resulting in values of spectral radiance in the 400 nm to 2500