Analysis and Measurement of Permittivity in Composite Materials at Low Frequencies

Bernardo Tellini, Mauro Bologna, Mirko Marracci, Roberto Micheletti
Abstract:
This paper focuses on the measurement of the effective permittivity in composite structures. A reconsideration of some concepts related to the measurement of effective permittivity for dielectric media and compositematerials at low frequencies is discussed. In particular, the possibility to measure the average electric displacement and electric field over a region of interest on the basis of the circulation law of the magnetic field by the use of properly shaped Rogowski coils is analyzed. A three-dimensional finite element analysis is carried out to simulate the effective magnetic permeability of a composite materials with the aim to find analogy between the two macroscopic electromagnetic parameters.
Keywords:
electrical permittivity, low frequency, metamaterial, magnetic permeability, measurement
Download:
IMEKO-TC4-2014-380.pdf
DOI:
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Event details
IMEKO TC:
TC4
Event name:
TC4 Symposium 2014
Title:

20th IMEKO TC4 Symposium on Measurements of Electrical Quantities (together with 18th TC4 International Workshop on ADC and DCA Modeling and Testing, IWADC)
"Research on Electrical and Electronic Measurement for the Economic Upturn"

Place:
Benevento, ITALY
Time:
15 September 2014 - 17 September 2014