A comparative study of the monitoring of a self aligning spherical journal using surface vibration, airborne sound and acoustic emission

P. Raharjo, B. Tesfa, F. Gu, A. D. Ball

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A Self aligning spherical journal bearing is a plain bearing which has spherical surface contact that can be applied in high power industrial machinery. This type of bearing can accommodate a misalignment problem. The journal bearing faults degrade machine performance, decrease life time service and cause unexpected failure which are dangerous for safety issues. Non-intrusive measurements such as surface vibration (SV), airborne sound (AS) and acoustic emission (AE) measurement are appropriate monitoring methods for early stage journal bearing fault in low, medium and high frequency. This paper focuses on the performance comparison using SV, AS and AE measurements in monitoring a self aligning spherical journal bearing for normal and faulty (scratch) conditions. It examines the signals in the time domain and frequency domain and identifies the frequency ranges for each measurement in which significant changes are observed. The results of SV, AS and AE experiments indicate that the spectrum can be used to detect the differences between normal and faulty bearing. The statistic parameter shows that RMS value and peak value for faulty bearing is higher than normal bearing.

Original languageEnglish
Article number012035
Number of pages13
JournalJournal of Physics: Conference Series
Volume364
Issue number1
DOIs
Publication statusPublished - 28 May 2012
Event25th International Congress on Condition Monitoring and Diagnostic Engineering: Sustained Prosperity through Proactive Monitoring, Diagnosis and Management - University of Huddersfield, Huddersfield, United Kingdom
Duration: 18 Jun 201220 Jun 2012
Conference number: 25
http://compeng.hud.ac.uk/comadem2012/ (Link to Conference Website )

Fingerprint

acoustic emission
journal bearings
vibration
acoustics
nonintrusive measurement
machinery
plains
misalignment
safety
frequency ranges
statistics
low frequencies
life (durability)
causes

Cite this

@article{a9c97274eabc4541b363db6abe752fd3,
title = "A comparative study of the monitoring of a self aligning spherical journal using surface vibration, airborne sound and acoustic emission",
abstract = "A Self aligning spherical journal bearing is a plain bearing which has spherical surface contact that can be applied in high power industrial machinery. This type of bearing can accommodate a misalignment problem. The journal bearing faults degrade machine performance, decrease life time service and cause unexpected failure which are dangerous for safety issues. Non-intrusive measurements such as surface vibration (SV), airborne sound (AS) and acoustic emission (AE) measurement are appropriate monitoring methods for early stage journal bearing fault in low, medium and high frequency. This paper focuses on the performance comparison using SV, AS and AE measurements in monitoring a self aligning spherical journal bearing for normal and faulty (scratch) conditions. It examines the signals in the time domain and frequency domain and identifies the frequency ranges for each measurement in which significant changes are observed. The results of SV, AS and AE experiments indicate that the spectrum can be used to detect the differences between normal and faulty bearing. The statistic parameter shows that RMS value and peak value for faulty bearing is higher than normal bearing.",
keywords = "Acoustic-emission, Airborne sound, Scratching, Self aligning spherical journal bearing, Surface vibration",
author = "P. Raharjo and B. Tesfa and F. Gu and Ball, {A. D.}",
year = "2012",
month = "5",
day = "28",
doi = "10.1088/1742-6596/364/1/012035",
language = "English",
volume = "364",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - A comparative study of the monitoring of a self aligning spherical journal using surface vibration, airborne sound and acoustic emission

AU - Raharjo, P.

AU - Tesfa, B.

AU - Gu, F.

AU - Ball, A. D.

PY - 2012/5/28

Y1 - 2012/5/28

N2 - A Self aligning spherical journal bearing is a plain bearing which has spherical surface contact that can be applied in high power industrial machinery. This type of bearing can accommodate a misalignment problem. The journal bearing faults degrade machine performance, decrease life time service and cause unexpected failure which are dangerous for safety issues. Non-intrusive measurements such as surface vibration (SV), airborne sound (AS) and acoustic emission (AE) measurement are appropriate monitoring methods for early stage journal bearing fault in low, medium and high frequency. This paper focuses on the performance comparison using SV, AS and AE measurements in monitoring a self aligning spherical journal bearing for normal and faulty (scratch) conditions. It examines the signals in the time domain and frequency domain and identifies the frequency ranges for each measurement in which significant changes are observed. The results of SV, AS and AE experiments indicate that the spectrum can be used to detect the differences between normal and faulty bearing. The statistic parameter shows that RMS value and peak value for faulty bearing is higher than normal bearing.

AB - A Self aligning spherical journal bearing is a plain bearing which has spherical surface contact that can be applied in high power industrial machinery. This type of bearing can accommodate a misalignment problem. The journal bearing faults degrade machine performance, decrease life time service and cause unexpected failure which are dangerous for safety issues. Non-intrusive measurements such as surface vibration (SV), airborne sound (AS) and acoustic emission (AE) measurement are appropriate monitoring methods for early stage journal bearing fault in low, medium and high frequency. This paper focuses on the performance comparison using SV, AS and AE measurements in monitoring a self aligning spherical journal bearing for normal and faulty (scratch) conditions. It examines the signals in the time domain and frequency domain and identifies the frequency ranges for each measurement in which significant changes are observed. The results of SV, AS and AE experiments indicate that the spectrum can be used to detect the differences between normal and faulty bearing. The statistic parameter shows that RMS value and peak value for faulty bearing is higher than normal bearing.

KW - Acoustic-emission

KW - Airborne sound

KW - Scratching

KW - Self aligning spherical journal bearing

KW - Surface vibration

UR - http://www.scopus.com/inward/record.url?scp=84862304843&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/364/1/012035

DO - 10.1088/1742-6596/364/1/012035

M3 - Article

VL - 364

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012035

ER -