Estimation of the Thermal Diffusivity in a Large Electroceramic Body by an Inverse Method
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00220889" target="_blank" >RIV/68407700:21110/14:00220889 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Estimation of the Thermal Diffusivity in a Large Electroceramic Body by an Inverse Method
Original language description
We investigate the temperature dependence of the thermal diffusivity for a large ceramic body of a cylindrical shape during firing up to 900 °C. The body was made of a ceramic material used in the production of electroporcelain insulators. We describe the corresponding heat transfer by the standard heat equation and solve the inverse problem by the Levenberg-Marquardt method. The results show that the method allows one to detect the physical-chemical processes occurring in the material during firing, namely, the liberation of physically bound water in the range up to 250 °C, the phase transformation of kaolinite into metakaolinite (dehydroxylation) in the range ~ 450 °C ? 650 °C, and solid-state sintering starting at ~ 700 °C.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JH - Ceramics, fire-proof materials and glass
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT2014)
ISBN
978-1-77592-068-7
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
1399-1402
Publisher name
University of Pretoria
Place of publication
Pretoria
Event location
Orlando
Event date
Jul 14, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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