Method of measurement of space charge distribution in double-layer composite dielectrics

Author

Yewen, Zhang ; Demin, Tu ; Yaonan, Liu

Author_Institution

Dept. of Electr. Eng., Xi´´an Jiaotong Univ., Shaanxi, China

fYear

1988

fDate

1-3 Sep 1988

Firstpage

477

Lastpage

481

Abstract

A novel method for measuring the space charge in double-layer composite dielectrics is given. Using the pressure step wave method, and considering the transmission and reflection of the pressure wave on the interface and the superposition of the signals obtained, the potential distribution in the double-layer composite dielectrics can be obtained by measuring the open-circuit voltage through simple calculation. The experimental equipment consists of a shock tube and a storage oscilloscope. For a composite dielectric sample consisting of 0.5-mm polymethylmethacrylate (PMMA) and 0.16-mm fluorinated ethylene propylene (FEP), the experimental results show that this method is successful

Keywords

composite insulating materials; dielectric measurement; dielectric properties of solids; organic compounds; polymers; space charge; FEP; PMMA; double-layer composite dielectrics; fluorinated ethylene propylene; open-circuit voltage; polymethylmethacrylate; potential distribution; pressure step wave method; shock tube; space charge distribution; storage oscilloscope; Acoustic reflection; Acoustic waves; Charge measurement; Current measurement; Dielectric measurements; Dielectrics and electrical insulation; Electrodes; Pressure measurement; Space charge; Stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)

Conference_Location

Oxford

Type

conf

DOI

10.1109/ISE.1988.38606

Filename

38606