Title :
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
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;
Conference_Titel :
Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)
Conference_Location :
Oxford
DOI :
10.1109/ISE.1988.38606
