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Displaying 52401 - 52425 of 73697

A Simplified Ultrasonic Immersion Technique for Materials Evaluation

January 1, 1998
Author(s)
D Xiang, Nelson N. Hsu, Gerald V. Blessing
A simplified ultrasonic immersion technique has been developed to measure leaky surface and bulk waves in solid materials by using specially designed lensless, line focus polyvinylidene fluoride (PVDF) transducers with a large aperture and a short focal

A Simulation-Based BRP Support System for Supply Chain Management

January 1, 1998
Author(s)
Shigeki Umeda, Albert W. Jones
Modern manufacturing enterprises must collaborate with a large number of suppliers to design and produce their products. Management of these supply chains is crucial. This paper proposes a simulation-based supply chain management system, which supports the

Absolute Silicon Photodiodes for 160 nm to 254 nm Photons

January 1, 1998
Author(s)
L R. Canfield, Robert E. Vest, R Korde, H Schmidtke, R Desor
Silicon n-on-p photodiodes with 100% internal efficiency have been studied in the 160 nm to 254 nm range. Preliminary values for the quantum yield of silicon, a fundamantal property, are determined. Using these values, a trap detector for absolute flux

Active Cavity Radiometer Based on High-TC Superconductors

January 1, 1998
Author(s)
Joseph P. Rice, Raju V. Datla, Leila R. Vale, David A. Rudman, M L. Sing, D Robbes
To implement the detector-based radiometric scale in the new Medium Background infrared [MBIR] facility at the National Institute of Standards and Technology [NIST], we have developed an electrical substitution cavity radiometer that can be operated at

Advances in NIST Standard Rockwell Diamond Indenters

January 1, 1998
Author(s)
Jun-Feng Song, Samuel R. Low III, David J. Pitchure, Theodore V. Vorburger
Recent developments in standard hardness machines and microform calibration techniques have made it possible to establish a worldwide unified Rockwell hardness scale with metrological traceability. This includes the establishments of the reference
Displaying 52401 - 52425 of 73697
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