Study on the Use of Motion Compensation Techniques to Determine Heat Sources. Application to Large Deformations on Cracked Rubber Specimens |
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Authors: | T Pottier M-P Moutrille J-B Le Cam X Balandraud M Grédiac |
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Institution: | (1) Laboratoire SYMME, Polytech’Savoie, BP 80439, 74944 Annecy le Vieux Cedex, France;(2) Laboratoire de Mécanique et Ingénieries (LaMI) Blaise Pascal University (UBP), French Institute for Advanced Mechanics (IFMA) Campus de Clermont-Ferrand / les Cézeaux, B.P. 265, 63175 Aubière cedex, France |
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Abstract: | This paper deals with the determination of the thermal response of elastomeric materials subjected to cyclic loading. In this
case, the material undergoes large deformations, so a suitable motion compensation technique has been developed to track the
material points and their temperature during the test. Special attention is paid to the Narcissus effect and to the detector
matrix of the infrared camera used in the study. Heat sources are then derived from the temperature maps. The thermoelastic
inversion phenomenon has been experimentally evidenced during a cyclic test performed on an elastomeric notched specimen.
The heat source distribution close to the crack tip has also been deduced from the temperature maps, thus highlighting the
relevance of the approach. |
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Keywords: | Infrared thermography Large displacements Heat sources Rubber Motion compensation |
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