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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Balandraud, Xavier
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2025Towards strain gauge 2.0: Substituting the electric resistance routinely deposited on polyimide film by the optimal pattern for full-field strain measurementcitations
- 2024Towards strain gauge 2.0: Substituting the electric resistance routinely deposited on polyimide film by the optimal pattern for full‐field strain measurementcitations
- 2021The Application of Ni–Ti SMA Wires in the External Prestressing of Concrete Hollow Cylinderscitations
- 2021Concept of mechanocaloric granular material made from shape memory alloycitations
- 2021Applying Full-Field Measurement Techniques for the Thermomechanical Characterization of Shape Memory Alloys: A Review and Classificationcitations
- 2021Reconstruction of Heat Sources Induced in Superelastically Loaded Ni-Ti Wire By Localized Deformation Processescitations
- 2020Prestress state evolution during thermal activation of memory effect in concrete beams strengthened with external SMA wirescitations
- 2020Concurrent tracking of strain and noise bursts at ferroelastic phase frontscitations
- 2020Rapid characterization of the fatigue limit of additive-manufactured maraging steels using infrared measurementscitations
- 2019Fast fatigue characterization by infrared thermography for additive manufacturingcitations
- 2018Concept for a 3D-printed soft rotary actuator driven by a shape-memory alloycitations
- 2017A review of rotary actuators based on shape memory alloyscitations
- 2014First steps towards the thermomechanical characterization of chalcogenide glass using quantitative infrared thermographycitations
- 2014First steps towards the thermomechanical characterization of chalcogenide glass using quantitative infrared thermographycitations
- 2014New insights in the thermomechanical characterization of chalcogenide glass using quantitative infrared thermographycitations
- 2013A new experimental route in thermomethanics of inorganic glasses using infrared thermographycitations
- 2013A new experimental route in thermomethanics of inorganic glasses using infrared thermographycitations
- 2013Mechanisms of deformation in crystallizable natural rubber. Part 1: Thermal characterizationcitations
- 2013Thermal effects accompanying the deformation of natural rubber
- 2013Thermal effects accompanying the deformation of natural rubber
- 2008Design of optimized patches to reinforce damaged wingscitations
- 2002Multiscale thermomechanical approaches to SMA behaviour
- 2001Influence of the thermomechanical coupling on the propagation of a phase change frontcitations
Places of action
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document
Thermal effects accompanying the deformation of natural rubber
Abstract
This paper deals with the thermal effects associated with deformation processes in unfilled natural rubber. Temperature variations are measured by infrared thermography during cyclic uniaxial mechanical tests at ambient temperature. Results show that natural rubber mainly exhibits entro-pic behaviour: the material produces (resp. absorbs) heat during loading (resp. unloading). The thermal responses obtained provide complementary information regarding the mechanical analysis of changes in the microstructure, especially strain-induced crystallization. The crystallization of the polymer chains under tension leads to a temperature increase of the order of several degrees Celsius. If crystallization occurs, a hysteresis loop is observed in terms of the strain-stress relationship. Moreover, stress relaxation tests show that the thermal signatures of crystallization and of crystallite melting are different. Indeed, if the strain is maintained fixed during loading, the temperature continues to increase for a few seconds before returning to the ambient temperature. This reveals that crystallization continues during relaxation. On the contrary, if the strain is maintained fixed during unloading, the specimen seems to return instantaneously to the ambient temperature. Throughout this paper, the effect of heat exchanges with the outside of the specimen (non-adiabaticity) on the temperature variations is taken into account for the analysis.