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NIST Authors in Bold

Displaying 47126 - 47150 of 74167

Technologies for Condition-Based Maintenance of Machine Tools

January 1, 2001
Author(s)
M A. Donmez, Kari K. Harper, Kang B. Lee
NIST has embarked upon a research effort to advance the capabilities and promote the continued growth of condition-based maintenance (CBM) technologies for the discrete-parts manufacturing industry. This research is focused on providing an alternative to

Temperature Monitoring of Capillary Rheometry Using a Fluorescence Technique

January 1, 2001
Author(s)
Anthony J. Bur, S C. Roth, H Lobo
A non-contact temperature monitoring technique based on fluorescence spectroscopy was used to measure the temperature of a polymer resin during capillary rheometry testing. Polyethylene doped with a fluorescent dye, perylene, was used in experiments that

Tensile Creep in the Next Generation Silicon Nitride

January 1, 2001
Author(s)
F Lofaj, Sheldon M. Wiederhorn, Gabrielle G. Long, P R. Jemian
The tensile creep behavior of a Lu-containing silicon nitride (SN 281) was characterized in the temperature range of 1350oC to 1550oC for test periods up to 10000h. For the same test conditions, the minimum strain rates were several orders of magnitude

Textile Composites: Modeling Strategies

January 1, 2001
Author(s)
S V. Lomov, G Huysmans, Y Luo, Richard~undefined~undefined~undefined~undefined~undefined Parnas, A Prodromou, I Verpoest, Frederick R. Phelan Jr.
Textile materials are characterised by the distinct hierarchy of structure, which should be represented by a model of textile geometry and mechanical behaviour. In spite of a profound investigation of textile materials and a number of theoretical models

Textile Composites: Modelling Strategies

January 1, 2001
Author(s)
S V. Lomov, G Huysmans, Y Luo, Richard~undefined~undefined~undefined~undefined~undefined Parnas, A Prodromou, I Verpoest, Frederick R. Phelan Jr.

The Ampere and Electrical Standards

January 1, 2001
Author(s)
Randolph Elmquist, Marvin E. Cage, Yi-hua D. Tang, Anne-Marie Jeffery, Joseph R. Kinard Jr., Ronald F. Dziuba, Nile M. Oldham, Edwin R. Williams
This paper describes some of the major contributions to metrology and physics made by the NIST Electricity Division, which has existed since 1901. It was one of the six original divisions of the National Bureau of Standards. The Electricity Division

The Application of Optical Coherence Tomography to Problems in Polymer Matrix Composites

January 1, 2001
Author(s)
Joy Dunkers, Frederick R. Phelan Jr., D P. Sanders, M J. Everett, William H. Green, Donald L. Hunston, Richard~undefined~undefined~undefined~undefined~undefined Parnas
The Composites Group at the National Institute of Standards and Technology has found optical coherence tomography (OCT) to be a powerful tool for non-destructive characterization of polymer matrix composites. Composites often exhibit superior properties to

The Atom Laser

January 1, 2001
Author(s)
Edward W. Hagley, Lu Deng, William D. Phillips, K Burnett, Charles W. Clark

The Boundary Lubrication Properties of Model Esters

January 1, 2001
Author(s)
P M. McGuiggan
The friction of three chemically distinct esters was measured in order to determine how molecular architecture influences friction. The friction coefficients of mica surfaces separated by a thin film (

The Candela and Photometric and Radiometric Measurements

January 1, 2001
Author(s)
Albert C. Parr
The national measurement system for photometric and radiometric quantities is presently based upon techniques and a measurement chain that make these quantities traceable to a high accuracy cryogenic radiometer. The redefinition of the candela in 1979
Displaying 47126 - 47150 of 74167
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