File:Analysis, approach and assessment of vibration criteria in shipboard machinery condition monitoring and diagnostics (IA analysisapproach93005liuc).pdf

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Original file ‎(1,204 × 1,662 pixels, file size: 8.01 MB, MIME type: application/pdf, 210 pages)

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Analysis, approach and assessment of vibration criteria in shipboard machinery condition monitoring and diagnostics   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Liu, Chao-Shih.;Jeon, Jae-Jin.;Shin, Y. S.
image of artwork listed in title parameter on this page
Title
Analysis, approach and assessment of vibration criteria in shipboard machinery condition monitoring and diagnostics
Publisher
Monterey, California : Naval Postgraduate School
Description
Title from cover
"NPS-ME-93-005A."
"September 30, 1993."
Includes bibliographical references (p. 194-195)
The setting of alarm levels plays a vital role in a machinery condition monitoring and diagnostic system. In this research, two approaches to setting vibration alarm levels using vibration signals produced by fire pumps are presented in the time and frequency domains. In the time domain, the cross peak analysis is proposed to extract the dominate peak points. The distribution of these cross peak points is found to have a lognormal distribution and can be normalized to a Normal distribution in the VdB domain. The computed g+2a value in the VdB domain is suggested for use as the alarm level. In the frequency domain, 1/1 octave band analysis is introduced. Three artificial fault simulations are conducted to compare the 1/1 octave band method with the broadband method. The results show that the 1/1 octave band method is more sensitive to the changes in VdB level than the broadband method. The computer programs to perform these two analyses are written using MATLAB. Alarm Level, Vibration, Fire Pump, Cross Peak Analysis, 1/1 Octave Band Analysis, Condition Monitoring and Diagnostics
aq/aq cc:9116 07/14/98

Subjects: TIME DOMAIN.; VIBRATION.; DIAGNOSTIC EQUIPMENT.; COMPUTER AIDED DIAGNOSIS.; MACHINES.; STATISTICAL DISTRIBUTIONS.; SHIPBOARD.
Language en_US
Publication date 30 September 1993
publication_date QS:P577,+1993-09-30T00:00:00Z/11
Current location
IA Collections: navalpostgraduateschoollibrary; fedlink; americana
Accession number
analysisapproach93005liuc
Authority file  OCLC: 1039500770
Source
Internet Archive identifier: analysisapproach93005liuc
https://archive.org/download/analysisapproach93005liuc/analysisapproach93005liuc.pdf

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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