Please use this identifier to cite or link to this item:
|Polarisation changes in guided infrared thermography using silver halide poly-crystalline mid-infrared fibre bundle
|Markham, S. K.
Korsakova, E. A.
Korsakov, A. S.
Zhukova, L. V.
Tofail, S. A. M.
|Springer Science and Business Media B.V.
|Polarisation changes in guided infrared thermography using silver halide poly-crystalline mid-infrared fibre bundle / S. K. Markham, A. Mani, E. A. Korsakova, et al. — DOI 10.1007/s10973-020-10018-0 // Journal of Thermal Analysis and Calorimetry. — 2020. — Vol. 142. — Iss. 2. — P. 1115-1122.
|Broadband mid-infrared (B-MIR) thermography using fibre optic waveguides can be critical in real-time imaging in harsh environments such as additive manufacturing, personalised medical diagnosis and therapy. We investigate the polarisation effect on thermal measurements through poly-crystalline fibre bundle employing a simple broadband cross-polarisation configuration experimental set-up. Silver halide poly-crystalline fibres AgCl1−xBrx (0 ≤ x≤1) (AgClBr-PolyC) have very wide transmission bandwidth spanning over the spectral range from 1 µm up to 31 µm FWHM. Moreover, they are non-toxic, non-hygroscopic, with relatively good flexibility, which make them very adequate for spectroscopic and thermal measurements in medical and clinical fields. In this study, we used a fibre bundle composed of seven single AgClBr-PolyC fibres, each with a core diameter of about 300 µm, inserted between two broadband MIR polarisers.A silicon carbide filament source was placed at the entrance of the fibre bundle, while a FLIR thermal camera with a close-up lens was employed to measure the spatial temperature distribution over the fibre-bundle end. Indeed, polarisation dependence of temperature measurements has been clearly observed in which the orientation of temperature extrema (minima and maxima)vary from one fibre to another within the bundle. Moreover, these observations have enabled the classification of AgClBr-PolyC fibres following their polarisation sensitivities by which some fibres are relatively highly sensitive to polarisation with polarisation temperature difference (PTD) that can reach 22.1 ± 2.8 °C, whereas some others show very low PTD values down to 3.1 ± 2.8 °C. Many applications can readily be found based on the advantages of both extreme cases. © 2020, The Author(s).
|BROADBAND MID-INFRARED FIBRE BUNDLE
SILVER HALIDE POLY-CRYSTALLINE
EXPERIMENTAL SET UP
SPATIAL TEMPERATURE DISTRIBUTION
|SM, AM, CS, JB and SAMT acknowledge European Commission Erasmus International Credit Mobility 2015–2020 between Ural Federal University named after the frst President of Russia B.N. Yeltsin, Yekaterinburg, Russia, and University of Limerick, Ireland, as well as Erasmus Bilateral Exchange between Wroclaw University of Science and Technology, Poland, and University of Limerick, Ireland, 2010–2020 for funding the work on imaging, characterisation and application development using MIR bundle fbres in medicine and manufacturing. JB acknowledges European Commission Erasmus+KA107 Inter-institutional Student and Staf Mobility Programme 2018–2020 between Wroclaw University of Science and Technology, Poland, and Ural Federal University, Yekaterinburg, Russia. SM and AM acknowledges Science Foundation Ireland (SFI) Centre for Medical Devices co-funded under the European Regional Development Fund (Grant Number 13/RC/2073) for characterising bundle fbre. EK, AK and LZ acknowledge Grant No. 18-73-10063 from the Russian Science Foundation for funding the fabrication of fbre bundles.
|RSCF project card:
|Appears in Collections:
|Научные публикации, проиндексированные в SCOPUS и WoS CC
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.