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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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Bernard, Cédric
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023Étude de l’origine physique de la non linéarité élastique en traction et compression des unidirectionnels à fibres continues de carbone
- 2023Intense shear band plasticity in metallic glass as revealed by a diametral compression testcitations
- 2019Strain rate sensitivity of germanium-selenium glasses
- 2017A sequential pre-cracking procedure to measure the mode-I fracture toughness of ultra pure bulk metallic glassescitations
- 2012Relationship between local strain jumps and temperature bursts due to the Portevin-Le Chatelier effect in an Al-Mg alloycitations
- 2011The Effect of Temperature on Anisotropy Properties of an Aluminium Alloycitations
- 2011High temperature elasticity and viscosity of GexSe1-x glasses in the transition rangecitations
- 2007Room temperature viscosity and delayed elasticity in infrared glass fibercitations
- 2006Toughness of Zr 55 Cu 30 Al 10 Ni 5 bulk metallic glass for two oxygen levelscitations
- 2006Indentation and rheology of inorganic glasses from 20 to 700 °C
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article
Room temperature viscosity and delayed elasticity in infrared glass fiber
Abstract
Infrared transparent optical fibers from the Te-As-Se system (TAS) exhibit a viscoelastic behavior at room temperature. The study of the change of the radius of curvature of fibers, once the fibers are unrolled from the mandrel onto which they were rolled just after fiber-drawing, allows the determination of constitutive laws both for the stress relaxation kinetics and for the delayed elasticity process. Whereas, a linear Burger's model provides a good modelling of the stress relaxation stage, a stretched exponential function gives a better description for the delayed elasticity behavior. The room temperature viscosity of the fibers ranges from 3 × 1016 to 2 × 1017 Pa s and the time constant of the anelastic strain recovery process is from 4 to 15 days.