Mechanical Characterization of Fiber Ceramics: Effect of Temperature

Fibrous ceramic structures are used in thermal insulators and filters in high‐temperature processes. Their mechanical properties are surprisingly complex, being governed by force fields transmitting in the net of fibers. Examining how the fibers link to each other sheds light to this quandary. Exten...

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Bibliographic Details
Published inAdvanced engineering materials Vol. 17; no. 6; pp. 821 - 830
Main Authors Järveläinen, Matti, Humalamäki, Joonas, Laakso, Jarmo, Levänen, Erkki
Format Journal Article
LanguageEnglish
Published Blackwell Publishing Ltd 01.06.2015
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Summary:Fibrous ceramic structures are used in thermal insulators and filters in high‐temperature processes. Their mechanical properties are surprisingly complex, being governed by force fields transmitting in the net of fibers. Examining how the fibers link to each other sheds light to this quandary. Extent of linking is defined by the fiber free length (deep red), which is the distance between the closest contact points (green) of a fiber. Decrease of free length, as neighboring fibers (blue) develop contacts, explains why these structures turn rigid with heat. When analyzed with grit blasting, this can be used to discover the structure's thermal history.
Bibliography:ark:/67375/WNG-5W16MMV9-P
istex:D0BFC77A68ED6506693F71F892DC86293CBEBBF7
ArticleID:ADEM201400512
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.201400512