Article (Scientific journals)
Cauchy-like relation between elastic constants in amorphous materials.
Krüger, Jan-Kristian; Baller, Jörg; Britz, Th et al.
2002In Physical Review. B, Condensed Matter and Materials Physics, 66 (1), p. 012206-012210
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Abstract :
[en] It is well known that in addition to the longitudinal modulus, viscoelastic liquids show a shear stiffness at sufficiently high probe frequencies due to structural relaxations. For probe frequencies that are large compared to the structural relaxation frequency, the measured elastic longitudinal and shear moduli become so-called clamped properties (c11∞ and c44∞, respectively). During freezing or polymerization of amorphous liquids, these clamped moduli behave in a strongly nonlinear fashion as a function of temperature or polymerization time. Based on Brillouin spectroscopy data we will show that there exists a linear relation between c11∞ and c44∞ over a large temperature or polymerization time range. Surprisingly, the parameters of this linear relation between the elastic moduli vary only little for different materials. Implications for the nonlinear elastic behavior at the glass transition will be discussed on the basis of mode Grüneisen parameters.
Disciplines :
Physics
Materials science & engineering
Identifiers :
UNILU:UL-ARTICLE-2009-051
Author, co-author :
Krüger, Jan-Kristian ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Baller, Jörg ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Britz, Th
le Coutre, A.
Peter, R.
Bactavatchalou, R.
Schreiber, J.;  Fraunhofer Institut für Zerstörungsfreie Prüfverfahren, Krügerstraße 22, D-01326 Dresden, Germany
Language :
English
Title :
Cauchy-like relation between elastic constants in amorphous materials.
Publication date :
2002
Journal title :
Physical Review. B, Condensed Matter and Materials Physics
ISSN :
1550-235X
Publisher :
American Physical Society, Woodbury, United States - New York
Volume :
66
Issue :
1
Pages :
012206-012210
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 18 December 2013

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