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DOI: 10.5445/IR/1000051447

FE-study on maximum swelling anisotropy in silica

Rizzi, Gabriele; Fett, Theo

Abstract:
Strength of silica fibers heat treated in humid air is affected by swelling strains. In the absence of externally applied stresses swelling is isotropic. Under uniaxial stress an anisotropy of swelling strains has to be expected with maximum expansion in stress direction. In order to compute the maximum possible anisotropy, a Finite Element analysis is carried out. Under the assumption of a spherical nano-pore generated by a single bond breaking event, an averaged axial swelling strain was computed that is by a factor of >2 larger than the volume swelling strain.


Zugehörige Institution(en) am KIT Fakultät für Maschinenbau (MACH)
Institut für Angewandte Materialien - Keramik im Maschinenbau (IAM-KM)
Publikationstyp Forschungsbericht
Jahr 2015
Sprache Englisch
Identifikator ISSN: 2194-1629
URN: urn:nbn:de:swb:90-514477
KITopen-ID: 1000051447
Verlag KIT, Karlsruhe
Umfang VI, 7 S.
Serie KIT Scientific Working Papers ; 40
Schlagworte Anisotropy, swelling, silica
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