Enhanced accuracy in dielectric response material characterization by air reference method
Journal article, 2013

Dielectric response measurements are an important technique to characterize dielectric materials. However, the electrode arrangements as well as the accuracy of the measurement setup limit the precision of this characterization, especially in case of solid dielectric materials. An air reference method and a contact-free electrode arrangement are described in this paper to enhance the dielectric characterization accuracy by avoiding problems introduced by electrode contacts. It is shown that by performing a calibration with electrode gap filled with air under the same conditions as the material is tested, the air reference method can improve the measurement accuracy substantially. This type of approach also eliminates the need of a detailed model of the analog measurement circuit. In conjunction with the contact-free measurements, the approach allows for avoiding complicated and time-consuming sample preparation procedures. The measurement methodology as well as the electrode arrangement and error increase estimates are presented and evaluated by using different dielectric response instruments and materials.

dielectric frequency response

air reference method

Dielectric material characterization

contact-free electrode arrangement

shunt characterization

Author

Xiangdong Xu

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Tord Bengtsson

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Jörgen Blennow

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Stanislaw Gubanski

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

IEEE Transactions on Dielectrics and Electrical Insulation

1070-9878 (ISSN) 15584135 (eISSN)

Vol. 20 3 913-321 6518960

Subject Categories

Materials Engineering

Composite Science and Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

Areas of Advance

Energy

Materials Science

DOI

10.1109/tdei.2013.6518960

More information

Created

10/8/2017