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Displaying 56476 - 56500 of 74202

Virtual Assembly Design Environment

September 1, 1995
Author(s)
Kevin W. Lyons
Virtual reality is a technology which is often regarded as a natural extension to 3D computer graphics with advanced input and output devices. This technology has only recently matured enough to warrant serious engineering applications. The integration of

A CASE Tool to Evaluate Functional Diversity in Safety System Software

August 31, 1995
Author(s)
D Wallace, James R. Lyle, L M. Ippolito, D W. Binkley, M L. Zimmerman
This report contains the results of the Phase C effort of the project A CASE Tool to Evaluate Functional Diversity in Safety System Software conducted by the National Institute of Standards and Technology for the Nuclear Regulatory Commission (NRC). Phase

Frequency Stabilization of a Green He-Ne Laser

August 20, 1995
Author(s)
Jack A. Stone Jr., Alois Stejskal
A new process for stabilizing the frequency of commercially available 543 nm He-Ne lasers is described. The stabilization method is based on anomalous dispersion of the gain medium. A total of four green lasers have been stabilized - two at the National

Compensation of Errors Detected by Process-Intermittent Gauging

August 10, 1995
Author(s)
Herbert T. Bandy, David E. Gilsinn
This paper describes a software design for implementing compensation of errors detected by process-intermittent gauging. This is the function of one control loop in the three-loop Quality In Automation (QIA) architecture that is under development at the

A Process Model for Production System Engineering

August 1, 1995
Author(s)
Charles R. McLean, Swee K. Leong
The Systems Integration for Manufacturing Applications (SIMA) Production Project at the U.S. National Institute of Standards and Technology (NIST) is working on the integration of a software tools environment for engineering production systems. This paper

Alkali-Silica Reaction and High Performance Concrete

August 1, 1995
Author(s)
Chiara F. Ferraris
Damage due to alkali-silica reaction (ASR) in concrete is a phenomenon that was first recognized in the U.S. since 1940 and has since been observed in many countries. Despite numerous studies published, the mechanism is not yet clearly understood

CAVITATION CONTRIBUTES SUBSTANTIALLY TO TENSILE CREEP IN SILICON NITRIDE

August 1, 1995
Author(s)
William E. Luecke, Sheldon M. Wiederhorn, B Hockey, Ralph Krause, Gabrielle G. Long
During tensile creep of a hot isostatically pressed (HIPed) silicon nitride, the volume fraction of cavities increases linearly with strain; these cavities produce nearly all of the measured strain. In contrast, compressive creep in the same stress and

Collaborative Design for Assembly of Complex Electro-Mechanical Products

August 1, 1995
Author(s)
Kevin W. Lyons
This presentation will describe some recent activities in collaborative design as it relates to complex electromechanical assemblies (CEMA''s). In today''s marketplace the complexity of issues relevant to a products successful introduction (timing
Displaying 56476 - 56500 of 74202
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