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Multiple Defect Size Estimation of Rolling Bearings using Autonomous Diagnosis and Vibrational Jerk

Ismail, Mohamed A.A. and Klausen, Andreas (2018) Multiple Defect Size Estimation of Rolling Bearings using Autonomous Diagnosis and Vibrational Jerk. The 7th World Conference on Structural Control and Monitoring, 7WCSCM, 22.-25. Juli 2018, Qingdao, China.

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Abstract

Developing condition monitoring techniques for monitoring ball bearings degradation is crucial to minimize unplanned down-time and maintenance costs. A recent monitoring approach is to maximize the useful service life of bearings by delaying their replacement after detecting an incipient fatigue defect, i.e. pitting/spall or wear. A variety of techniques have been investigated and reported in the literature to monitor defect size prior to a critical threshold. These studies focus on a single defect; nevertheless, the presence of multiple defects is practically experienced and its presence may introduce inaccuracies and result in wrong defect size estimation. In this paper, an autonomous fault detection technique is used to detect defect type and location, then the vibrational jerk method is extended to quantify multiple localized bearing defects. Operational spall size estimations are achieved for two defect conditions: natural run to failure defects from a test stand at University of Agder in Norway, and artificially seeded multiple spalls provided by DLR (German Aerospace Center) in Germany.

Item URL in elib:https://elib.dlr.de/121528/
Document Type:Conference or Workshop Item (Lecture, Speech)
Title:Multiple Defect Size Estimation of Rolling Bearings using Autonomous Diagnosis and Vibrational Jerk
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ismail, Mohamed A.A.Mohamed.Ismail (at) dlr.deUNSPECIFIED
Klausen, Andreasandreas.klausen (at) uia.noUNSPECIFIED
Date:23 June 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Bearing wear, fatigue spalls, fault diagnosis, health indicator, vibration jerk
Event Title:The 7th World Conference on Structural Control and Monitoring, 7WCSCM
Event Location:Qingdao, China
Event Type:international Conference
Event Dates:22.-25. Juli 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Safety Critical Systems&Systems Engineering
Deposited By: Ismail, Eng. Mohamed AA
Deposited On:04 Sep 2018 15:46
Last Modified:31 Jul 2019 20:19

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