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Interval analysis applied to dielectric spectroscopy: a guaranteed parameter estimation

Aufray, Maëlenn and Brochier, Adrien and Possart, Wulff Interval analysis applied to dielectric spectroscopy: a guaranteed parameter estimation. (2012) In: 16th IFAC Symposium on System Identification, 2012, 11-13 Jui 2012, Brussels, Belgium .

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Official URL: http://dx.doi.org/10.3182/20120711-3-BE-2027.00308

Abstract

Dielectric spectra of materials are often difficult to analyze since the common software algorithms and line shape functions do not always provide unambiguous data for the fitted parameters. In particular, this article deals with epoxy/ceramics nano-prepolymers studied by dielectric spectroscopy. In this situation, both system (the prepolymer with nanofillers) and method (the dielectric spectroscopy) are complex. Taking into account the experimental error of each data point in the measured dielectric spectrum, the sofware based on a global optimization algorithm which uses interval analysis, provides a confidence interval for every parameter of the dielectric function implemented in the software. Then, this software is able to deliver and guarantee the number of relaxation processes even if they are in part masked by other phenomena like conductivity or electrode polarization.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Other partners > Universität des Saarlandes (GERMANY)
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Deposited By: Maelenn AUFRAY
Deposited On:30 Sep 2013 07:49

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