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Institution

Westinghouse Electric

CompanyCranberry Township, Pennsylvania, United States
About: Westinghouse Electric is a company organization based out in Cranberry Township, Pennsylvania, United States. It is known for research contribution in the topics: Brake & Circuit breaker. The organization has 27959 authors who have published 38036 publications receiving 523387 citations.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the basic control, sequencing and protection philosophies that govern the operation of the UPFC, subject to the practical constraints encountered in an actual high power installation, are described. And the results from a TNA study, undertaken jointly by the Electric Power Research Institute (EPRI), Western Area Power Administration (WAPA) and Westinghouse Science and Technology Center (STC), are illustrated with representative results.
Abstract: The UPFC is the most versatile and complex power electronic equipment that has emerged for the control and optimization of power flow in electrical power transmission systems. It offers major potential advantages for the static and dynamic operation of transmission lines, but it brings with it major design challenges, both in the power electronics and from the perspective of the power system. As the UPFC transitions from concept to full-scale power system implementation, the control and protection of this sophisticated equipment are of primary concern. This paper describes the basic control, sequencing and protection philosophies that govern the operation of the UPFC, subject to the practical constraints encountered in an actual high power installation. The operation of the UPFC is illustrated with representative results from a TNA study, undertaken jointly by the Electric Power Research Institute (EPRI), Western Area Power Administration (WAPA) and Westinghouse Science and Technology Center (STC).

274 citations

Journal ArticleDOI
TL;DR: The International Reactor Innovative and Secure (IRIS) as discussed by the authors is an integral, modular, medium size (335 MWe) PWR, which has been under development since the turn of the century by an international consortium led by Westinghouse and including over 20 organizations from nine countries.

274 citations

Journal ArticleDOI
TL;DR: In this paper, a fracture mechanics approach was used to investigate the high strength of hot-pressed Si3N4 powders, and room-temperature flexural strengths, fracture energies, and elastic moduli were determined for material fabricated from α- and β-phase Si3 N4 powder.
Abstract: A fracture mechanics approach was used to investigate the high strength of hot-pressed Si3N4. Room-temperature flexural strengths, fracture energies, and elastic moduli were determined for material fabricated from α- and β-phase Si3N4 powders. When the proper powder preparation technique was used, α-phase powder resulted in a high fracture energy (69,000 ergs/cm2), a high flexural strength (95,000 psi), and an elongated (fiberlike) grain morphology, whereas β-phase powder produced a low fracture energy (16,000 ergs/cm2), a relatively low strength (55,000 psi), and an equiaxed grain morphology. It was hypothesized that the high strength of Si3N4 hot-pressed from α-phase powder results from its high fracture energy, which is attributed to the elongated grains. High-strength Si3N4 has directional properties caused, in part, by the elongated grain structure, which is oriented preferentially with respect to the hot-pressing direction.

274 citations

Journal ArticleDOI
TL;DR: In this article, an effective crack length, l 0, is introduced into the solutions for both the linear elastic stress intensity factor and the J integral to predict the behavior of short cracks.
Abstract: Elastic and elastic-plastic fracture mechanics solutions are modified to predict the behaviour of short cracks. An effective crack length, l 0 is introduced into the solutions for both the linear elastic stress intensity factor and the J integral. Crack growth results for short cracks, in both elastic and plastic strain fields of unnotched specimens, when interpreted in terms of the modified solutions, show excellent agreement with elastic long crack data. The modified J integral solutions are extended to plastically strained notches, and the solutions obtained are tested in the correlation of data for growth of sort cracks near notches of varying severity with data for long crack under elastic loading. Although constant stress amplitude tests of these notches gave crack growth rate versus crack length curves which varied from monotonically increasing for blunt notches, to an initial decrease followed by an increase of sharp notches, all the data fell within the long crack data when correlated by the J integral solutions. Conversely, these solutions can be used to predict elastic and inelastic short crack growth curves for notches of various severities.

274 citations

Journal ArticleDOI
TL;DR: In this article, a method for rapidly predicting the formation and stability of undiscovered single phase high-entropy alloys (SPHEAs) is provided, which uses data for 73 metallic elements and rapidly combines them - 4, 5 or 6 elements at a time - using the Miedema semi-empirical methodology to yield estimates of formation enthalpy.

270 citations


Authors

Showing all 27975 results

NameH-indexPapersCitations
Takeo Kanade147799103237
Martin A. Green127106976807
Shree K. Nayar11338445139
Dieter Bimberg97153145944
Keith E. Gubbins8546635909
Peter K. Liaw84106837916
Katsushi Ikeuchi7863620622
Mark R. Cutkosky7739320600
M. S. Skolnick7372822112
David D. Woods7231820825
Martin A. Uman6733816882
Michael Keidar6756614944
Terry C. Hazen6635417330
H. Harry Asada6463317358
Michael T. Meyer5922526947
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20231
202217
202135
202063
201946
201860