Vibration characteristics measurement of beam-like structures using infrared thermography

dc.contributor.authorTalai, S.M.
dc.contributor.authorDesai, D.A.
dc.contributor.authorHeyns, P.S. (Philippus Stephanus)
dc.date.accessioned2017-02-09T07:08:24Z
dc.date.issued2016-11
dc.description.abstractInfrared thermography (IRT) has matured and is now widely accepted as a condition monitoring tool where temperature is measured in a non-contact way. Since the late 1970s, it has been extensively used in vibrothermography (Sonic IR) non-destructive technique for the evaluation of surface cracks through the observation of thermal imaging of the vibration-induced crack heat generation. However, it has not received research attention on prediction of structural vibration behaviour, hence; the concept to date is not understood. Therefore, this paper explores its ability to fill the existing knowledge gap. To achieve this, two cantilever beam-like structures couple with a friction rod subjected to a forced excitations while infrared cameras capturing the thermal images on the friction interfaces. The analysed frictional temperature evolution using the Matlab Fast Fourier Transform (FFT) algorithm and the use of the heat conduction equation in conjunction with a finite difference approach successfully identifies the structural vibration characteristics; with maximum error of 0.28% and 20.71% for frequencies and displacements, respectively. These findings are particularly useful in overcoming many limitations inherent in some of the current vibration measuring techniques applied in structural integrity management such as strain gauge failures due to fatigue.en_ZA
dc.description.departmentMechanical and Aeronautical Engineeringen_ZA
dc.description.embargo2017-11-30
dc.description.librarianhb2017en_ZA
dc.description.sponsorshipThe authors greatly appreciate the support of Tshwane University of Technology, University of Pretoria and Eskom Power Plant Institute (South Africa) in funding this research.en_ZA
dc.description.urihttp:// www.elsevier.com/locate/infrareden_ZA
dc.identifier.citationTalai, SM, Desai, DA & Heyns, PS 2016, 'Vibration characteristics measurement of beam-like structures using infrared thermography', Infrared Physics and Technology, vol. 79, pp. 17-24.en_ZA
dc.identifier.issn1350-4495
dc.identifier.other10.1016/j.infrared.2016.09.003
dc.identifier.urihttp://hdl.handle.net/2263/58938
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2016 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Infrared Physics and Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Infrared Physics and Technology, vol.79, pp. 17-24, 2016. doi : 10.1016/j.infrared.2016.09.003.en_ZA
dc.subjectVibration behaviouren_ZA
dc.subjectFrictional heat generationen_ZA
dc.subjectCondition monitoringen_ZA
dc.subjectInfrared thermography (IRT)en_ZA
dc.subject.otherEngineering, built environment and information technology articles SDG-09
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.subject.otherEngineering, built environment and information technology articles SDG-11
dc.subject.otherSDG-11: Sustainable cities and communities
dc.subject.otherEngineering, built environment and information technology articles SDG-12
dc.subject.otherSDG-12: Responsible consumption and production
dc.titleVibration characteristics measurement of beam-like structures using infrared thermographyen_ZA
dc.typePostprint Articleen_ZA

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