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Total Time on Test, TTT-plots for Condition Monitoring of Rolling Element Bearings in Paper Mills
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (Systemekonomi)
2003 (English)In: International Journal of COMADEM, ISSN 1363-7681, Vol. 6, no 2, 27-32 p.Article in journal (Refereed) Published
Abstract [en]

When using vibration-based maintenance, it is easier to detect damage in rolling element bearings. But the damage severity and risk of bearing's failure, if no maintenance action such as replacement is done, can not be assessed accurately. When the vibration level of a rolling element bearing is increasing or it is close to (or greater than) a predetermined replacement level, the assessment of the probability of a bearing’s failure enhances the decision making process. Thus, at each vibration measurement occasion a decision has to be made regarding whether the bearing needs to be maintained and how urgent it actually is.

The paper describes a graphical method for both assessing the probability of failure of damaged rolling element bearing and predicting the residual of its effective life. It uses history of the bearing in question and life statistics as well as the vibration levels at failure/condition-based replacements of past bearings of the same design or of very similar performance and duties. This method is based on the concept of Total Time on Test, TTT-plot. The application of TTT-plot on age and condition-based maintenance techniques are discussed and described by two examples. This graphical method is developed from previous work by the author and others. 

Place, publisher, year, edition, pages
2003. Vol. 6, no 2, 27-32 p.
Keyword [en]
Total Time on Test, Condition monitoring, Failures, mechanical systems, Probability of failure of equipment and Time between measurements.
National Category
Engineering and Technology
Research subject
Technology (byts ev till Engineering), Terotechnology
Identifiers
URN: urn:nbn:se:lnu:diva-21351OAI: oai:DiVA.org:lnu-21351DiVA: diva2:548291
Available from: 2012-08-30 Created: 2012-08-30 Last updated: 2012-09-12Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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