What the Future Holds for Condition Monitoring

2011 ◽  
pp. 48-64 ◽  
Keyword(s):  
Condition Monitoring ◽  
The Future

Engine Condition Monitoring Using Fibreoptic Probes

1980 ◽  
Author(s):  
R. M. McCord
Keyword(s):  
Condition Monitoring ◽  
Flow Time ◽  
Sufficient Accuracy ◽  
Diagnostic Tools ◽  
Aircraft Maintenance ◽  
Turbine Engine ◽  
Visual Access ◽  
Military Aviation ◽  
The Future ◽  
Engine Condition

With the advent of U.S. military aviation changing from the fixed-cycle inspection concept to the On-Condition Maintenance (OCM) concept, it has become readily apparent to the aircraft maintenance people that their existing inspection methods and diagnostic tools are not adequate to keep pace with the new concept. Some of those components which required removal and disassembly to facilitate inspection should now be inspected on-the-wing to maintain the inspection flow time. Some means of gaining visual access to those components is required. A method has been developed to inspect the gas path of a turbine engine with sufficient accuracy to provide the user with the decisive information on whether to continue the engine in service or remove it for repair. The genesis of using controlled light and vision for engine internal inspection is presented and progress from the early days on the flightline to the future is discussed.

Proactive Aging Management: PAM 2.0

2010 ◽  
Author(s):  
Robert K. Perdue ◽  
Matthew H. Kelley ◽  
Raymond E. O’Rourke ◽  
Joel Woodcock ◽  
Mengyi Zhang ◽  
...  
Keyword(s):  
Condition Monitoring ◽  
Preventive Maintenance ◽  
Nuclear Plant ◽  
Maintenance Program ◽  
Safety Margins ◽  
The Future ◽  
Teaching Modules

Proactive aging management or PAM is defined as the use of preventive maintenance, spares provisioning, condition monitoring and other strategies to economically optimize the availability of a plant while maintaining existing safety margins. Westinghouse has developed a set of teaching modules and supporting software, PAM 2.0, to help transfer this technology to China’s nuclear stations. This paper describes the content of the teaching modules and PAM 2.0 and how they can be used to establish an optimized total reliability and maintenance program for a new or existing nuclear plant. It also provides a perspective on the future of PAM in China provided by two Chinese engineers who took the course.

Bispectrum: A Tool for Distinguishing Different Faults in Rotating Machine

2012 ◽  
Author(s):  
Keri Elbhbah ◽  
Jyoti K. Sinha
Keyword(s):  
Fault Diagnosis ◽  
Condition Monitoring ◽  
State Of The Art ◽  
Ball Bearings ◽  
Rotating Machines ◽  
Rotating Machine ◽  
Current State ◽  
The Future ◽  
Experimental Rig ◽  
Initial Results

The current state-of-the-art in vibration-based condition monitoring of rotating machines requires a number of vibration transducers at each bearing pedestal of a rotating machine to identify any faults, in the machine. In this paper, the use of the bispectrum has been proposed for fault diagnosis in rotating machines. The reason for this is that it may reduce the number of vibration transducers at each bearing pedestal in rotating machines in the future. The paper presents a comparison of the bispectrum results for four cases, namely; Healthy, Misaligned shaft, Crack Shaft and Shaft Rub on an experimental rig consisting of two rigidly coupled shafts supported through 4 ball bearings. Only one accelerometer has been used for this purpose at each bearing and the initial results observed are encouraging.

International determination of the total motion of the pole

1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  
Secular Motion ◽  
The Future

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).

Status of the Lick Proper Motion Program

1978 ◽  
Vol 48 ◽  
pp. 387-388
Author(s):  
A. R. Klemola
Keyword(s):  
Proper Motion ◽  
The Future

Second-epoch photographs have now been obtained for nearly 850 of the 1246 fields of the proper motion program with centers at declination -20° and northwards. For the sky at 0° and northward only 130 fields remain to be taken in the next year or two. The 270 southern fields with centers at -5° to -20° remain for the future.

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