dc.contributor.author |
Talai, Stephen M.
|
|
dc.contributor.author |
Desai, Dawood A.
|
|
dc.contributor.author |
Heyns, P.S. (Philippus Stephanus)
|
|
dc.date.accessioned |
2020-07-11T09:06:54Z |
|
dc.date.available |
2020-07-11T09:06:54Z |
|
dc.date.issued |
2019-06-18 |
|
dc.description.abstract |
This paper concerns the development of methodology for use of Infrared thermography
(IRT) for online prediction of mechanical structural vibration behaviour; given that it has extensively
been applied in non-destructive technique for evaluation of surface cracks through the observation
of thermal imaging of the vibration-induced crack heat generation. To achieve this, AISI 304
steel cantilever beam coupled with a slipping friction rod was subjected to a forced excitations with
an infrared camera capturing the thermal profile at the friction interface. The analysis of thermal
image data recorded (radiometric) for the frictional temperature time domain waveform using a
MATLAB FFT algorithm in conjunction to IR camera frequency resolution of 120 Hz and the
use of the heat conduction equation with the help of a finite difference approach successfully identified
the structural vibration characteristics in terms of frequency and displacement, the maximum
relative errors being 0.09% and 5.85% for frequencies and displacements, respectively. These
findings are particularly useful in overcoming many limitations inherent in some of the current
vibration measuring techniques in harsh and remote environments. |
en_ZA |
dc.description.department |
Mechanical and Aeronautical Engineering |
en_ZA |
dc.description.librarian |
am2020 |
en_ZA |
dc.description.sponsorship |
Eskom Power
Plant Engineering Institute (South Africa), University of Pretoria
and Tshwane University of Technology. |
en_ZA |
dc.description.uri |
http://www.elsevier.com/locate/aej |
en_ZA |
dc.identifier.citation |
Talai, S.M., Desai, D.A. & Heyns, P.S. 2019 ,'Infrared thermography applied to the prediction of
structural vibration behaviour', Alexandria Engineering Journal, vol. 58, pp. 603-610. |
en_ZA |
dc.identifier.issn |
1110-0168 |
|
dc.identifier.other |
10.1016/j.aej.2019.03.008 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/75150 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
Elsevier |
en_ZA |
dc.rights |
© 2019 The Authors. Published by Elsevier B.V. on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license. |
en_ZA |
dc.subject |
Structural health monitoring |
en_ZA |
dc.subject |
Frictional temperature evolution |
en_ZA |
dc.subject |
Online monitoring |
en_ZA |
dc.subject |
Thermal imaging |
en_ZA |
dc.subject |
Infrared thermography (IRT) |
en_ZA |
dc.title |
Infrared thermography applied to the prediction of structural vibration behaviour |
en_ZA |
dc.type |
Article |
en_ZA |