Thermal diffusivity identification by 2 nde derivative analysis of transient temperature profile
| العنوان: | Thermal diffusivity identification by 2 nde derivative analysis of transient temperature profile |
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| المؤلفون: | Damien Meresse, Ali Grine, Souad Harmand |
| المساهمون: | Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 (LAMIH), Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Centre National de la Recherche Scientifique (CNRS)-INSA Institut National des Sciences Appliquées Hauts-de-France (INSA Hauts-De-France), Université M'Hamed Bougara Boumerdes (UMBB) |
| المصدر: | Journal of Thermal Analysis and Calorimetry Journal of Thermal Analysis and Calorimetry, Springer Verlag, 2016, 124 (3), pp.1193-1208. ⟨10.1007/s10973-016-5273-5⟩ |
| بيانات النشر: | HAL CCSD, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Surface (mathematics), Chemistry, Isotropy, Thermodynamics, 02 engineering and technology, Function (mathematics), Derivative, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Thermal diffusivity, 01 natural sciences, Temperature measurement, 010406 physical chemistry, 0104 chemical sciences, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Transient (oscillation), Physical and Theoretical Chemistry, 0210 nano-technology, Constant (mathematics) |
| الوصف: | This paper deals with a new method to identify the thermal diffusivity of isotropic materials. Contrary to the flash method, a continuous and constant heating is applied on the rear surface of the sample. An analytical solution of the 1D transient equation is developed based on Green’s function and gives the temperature profile on the opposite surface at the first moments. Regarding the 2nd derivative of this equation, we found that it reaches a maximum value at a characteristic time $${t}_{{\text{c}}_{2{{\mathrm{nd}}}}}$$ which is proportional to the thermal diffusivity $$\alpha $$ and the sample thickness $${e}_{\text{s}}$$ . Experiments are performed on a well-known material, ARMCO Iron, to check the feasibility and the accuracy of the identification with noisy temperature measurements. The method is also applied to insulation materials. Uncertainties on the identified values are discussed, and rules are given to minimize these uncertainties. The results show that this method can be a real alternative or complementary to the flash method. |
| اللغة: | English |
| تدمد: | 1388-6150 1588-2926 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::545213a53829711dd4dc67b04aa640cd https://hal.archives-ouvertes.fr/hal-02098549/file/articleDiffusivite-PostPrint.pdf |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....545213a53829711dd4dc67b04aa640cd |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 13886150 15882926 |
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