Materials with Complex Behaviour pp 99-123

Part of the Advanced Structured Materials book series (STRUCTMAT, volume 3) | Cite as

Dielectric Spectra Analysis: Reliable Parameter Estimation Using Interval Analysis

Chapter

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 this paper, a new algorithm (called S.A.D.E. as SIVIA (Set inversion Via Interval Analysis) Applied to DiElectric spectroscopy), based on a global optimization algorithm which uses interval analysis, is presented. Taking into account the experimental error of each data point in the measured dielectric spectrum, our algorithm provides a confidence interval for every parameter of the dielectric function implemented in the software. This is demonstrated for an epoxy monomer with a sum of Debye relaxators as dielectric line shape function. S.A.D.E. is also 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.

Keywords

computer modeling dielectric properties epoxy monomers simulations 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Adrien Brochier
    • 1
  • Maëlenn Aufray
    • 2
  • Wulff Possart
    • 3
  1. 1.Lehrstuhl Adhesion and Interphases in PolymersUniversität des SaarlandesSaarbrückenGermany
  2. 2.Chair Adhesion and Interphases in PolymersUniversity of SaarlandSaarbrückenGermany
  3. 3.Saarland UniversitySaarbrückenGermany

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