Results 241 to 250 of about 126,562 (300)

Vibration protection for rotating machinery

Electrical Engineering, 1944
Vibration protection becomes desirable for rotating machinery when it is operated with certain defects. Electric generators may be operated with a single ``ground'' on the rotating field circuit without harm but the potential hazards of a second ``ground'' at another point on the same circuit are so great that the need of protective equipment for ...
R. L. Webb, C. S. Murray
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Microcombustors for Rotating Machinery

2009
To drive microscale rotating machinery such as a microengine, motor-compressor, or generator, energy must be added to the system. This can take many forms depending on the application, however, for an engine intended to be a primary power source; this is usually thermal energy.
C.M. Spadaccini, I.A. Waitz
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Rotating Machinery Utilizing Superconductors

IEEE Transactions on Aerospace, 1964
The properties of superconducting materials appropriate for a discussion of their application in rotating machines are cited. The electrical, mechanical, and thermal losses that will occur in superconducting rotating machines are defined and estimated. The requirements for maintaining the cryogenic environment are given in terms of refrigerant use and ...
Z. J. J. Stekly, H. H. Woodson
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Balancing of Rotating Machinery

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 1991
An important form of vibration experienced by rotating machinery in a wide range of applications is that due to inherent unbalance. Rotating machinery may incorporate either rigid or flexible shafts and balancing procedures for both cases are discussed, but emphasis is given to a review of techniques for the high-speed balancing of flexible shafts ...
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Fault Diagnosis of Rotating Machinery

The Shock and Vibration Digest, 1998
This paper aims to provide a broad review of the state of the art in fault diagnosis techniques, with particular regard to rotating machinery. Fault diagnosis is a subject too wide ranging to allow a comprehensive coverage of all of the areas associated with this field to be undertaken, and it is not the authors' intention to do so.
S. Edwards, A.W. Lees, M.I. Friswell
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Shaft voltages and rotating machinery

Industry Applications Society 38th Annual Petroleum and Chemical Industry Conference, 1993
In order to determine whether a machine is experiencing shaft voltage and current problems, recognition of the four types of damage is imperative. The four distinct types of shaft current damage, frosting, spark tracks, pitting, and welding are described. The four shaft voltage sources and their means of generation are discussed in detail.
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Fault Diagnostics of Rotating Machinery

2011 21st International Conference on Systems Engineering, 2011
This research extends the concept of [Lehrasab, 1999] to the domain of rotating machines. It aims at developing novel fault diagnostics techniques for the motor or rotating machines for diagnostics that is costeffective and easier to deploy from industrial perspective.
Z. Mahmood, N.S. Khattak
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Automated Diagnostics of Rotating Machinery

Volume 4: Turbo Expo 2003, 2003
This paper provides an overview of the current available technologies for automated machinery condition evaluation and fault diagnosis within an overall plant asset management system. The paper presents a basic overview of an integrated plant asset management system, and focuses on the available technologies for automated diagnostics including ...
A. El-Shafei, N. Rieger
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Tensor analysis of rotating machinery

Electrical Engineering, 1933
IN ANALYZING the transient or steady state performance of any rotating machine a system of linear equations is set up for finding the currents, another system is set up for the torque, etc. The setting up of the equations is usually laborious and due to the accidental steps made in their solutions the final results are in a form that is difficult to ...
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Modal Analysis for Rotating Machinery

1999
The primary objective of this paper is to lay the foundations for the application of modal analysis and testing technology to rotating machinery. Although this technology is already used to some extent by the manufacturers and users of rotating machines, such use is generally limited to stationary parts of the machine, or to rotating components in a ...
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