Measurement of electric charges at the interface between two dielectric layers using an electro-acoustic transducer technique

Author

Takashima, Masatoshi ; Soda, Keiichi ; Takada, Tatsuo

Author_Institution

Musashi Inst. of Technol., Tokyo, Japan

Volume

23

Issue

2

fYear

1988

fDate

4/1/1988 12:00:00 AM

Firstpage

287

Lastpage

295

Abstract

An acoustic-electric field meter was developed that can measure electric field strength within two dielectric insulating layers. The meter was used for the measurement of accumulated charges at the interface between double insulating layers. For an accurate measurement of an electrical field in insulating materials, two experimental conditions were required: (1) an optimum electrode thickness, and (2) the optimum conversion constant from acoustic transducer pressure due to the electrical signal. A compensation equation to calculate the amount of accumulated charges for various thicknesses of insulating materials is presented. It was found that the amount of accumulated charge and the accumulation rate strongly depended on the condition of the interface between two dielectrics whether a metal electrode was present or not

Keywords

acoustoelectric transducers; charge measurement; electric field measurement; accumulation rate; acoustic transducer pressure; acoustic-electric field meter; charge accumulation; charge measurement; compensation equation; double insulating layers; electrical field in insulating materials; electro-acoustic transducer technique; experimental conditions; interface between two dielectric layers; measurement of accumulated charges; metal electrode; optimum conversion constant; optimum electrode thickness; thicknesses of insulating materials; Acoustic materials; Acoustic measurements; Current measurement; Dielectric materials; Dielectric measurements; Dielectrics and electrical insulation; Electric variables measurement; Electrodes; Pressure measurement; Thickness measurement;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.2365

Filename

2365