Towards model based prognostics - Characterization of fault size in bearings

Gideon Kogan, Ifat Itzhak, Shlomi Shaharabany, Jacob Bortman, Renata Klein

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The characterization of a bearing fault and its size is a first important stage towards a reliable model based prognostics, leading to an assessment of the remaining useful life of the faulty bearing. This paper describes the first stage in a research aimed to propose an approach for model-based prognostics. The approach utilizes various methods of vibration analysis and vibration based condition indicators which proved to be effective for detecting bearing degradation. While the problem of detecting a fault is more researched, the relationship between the health indicators (aggregated condition indicators) and the size of the damage, as well as the modelling of evolving damages are less researched and less understood. As a result, the ability to assess the severity of the damage or predict the remaining useful lifetime of a damaged bearing is limited. The current research is aimed to advance the knowledge in this difficult problem. A 3D ball-bearing model that enables a simulation of its dynamics under the influence of a wide spectrum of faults was used. The goal was to study and predict the influence of the bearing fault size and the load on the generated vibration pattern. Based on the obtained insights, several health indicators were considered and compared. The relationship between the fault size and the selected health indicators will be demonstrated by presenting results from experiments on a test fixture with seeded faults of different sizes and different loads, as well as the corresponding outcome of the dynamic model of the bearing.

Original languageEnglish
Title of host publication10th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2013, CM 2013 and MFPT 2013
PublisherBritish Institute of Non-Destructive Testing
Pages350-362
Number of pages13
ISBN (Print)9781629939926
StatePublished - 1 Jan 2013
Event10th International Conference on Condition Monitoring, CM 2013 and Machinery Failure Prevention Technologies 2013, MFPT 2013 - Krakow, Poland
Duration: 18 Jun 201320 Jun 2013

Publication series

Name10th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2013, CM 2013 and MFPT 2013
Volume1

Conference

Conference10th International Conference on Condition Monitoring, CM 2013 and Machinery Failure Prevention Technologies 2013, MFPT 2013
Country/TerritoryPoland
CityKrakow
Period18/06/1320/06/13

ASJC Scopus subject areas

  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality

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