Laser-induced pressure pulse measurements of space charge in PE/EVA laminates

Author

Tanaka, Toshikatsu ; Shirai, Hideaki ; Kisanuki, Osamu ; Uchiumi, Michihiro

Author_Institution

Kyushu Univ., Kasuga, Japan

fYear

1995

fDate

17-20 Sep 1995

Firstpage

427

Lastpage

430

Abstract

The LIPP method was used for measuring the charge distribution at the interface between PE/EVA laminate dielectrics under dc stress. High power laser light of 300 mJ/pulse was applied to a specially coated surface of the specimen. A short (300 ps) and a long (5 ns) laser pulse were used for thin and thick specimens, respectively. The result of the measurement shows that space charge was accumulated at the interface, When it was positive, the space charge stayed at the interface on the EVA side and was not transferred to the interface on the LDPE side. On the contrary, when it was negative, the space charge was transferred to the interface on the LDPE side

Keywords

charge measurement; composite insulating materials; composite material interfaces; laminates; measurement by laser beam; polyethylene insulation; polymer blends; space charge; 300 ps; 5 ns; LDPE/EVA laminates; LIPP method; coated surface; dc stress; ethylene vinyl acetate copolymer; high power laser light; interface charge distribution; laser-induced pressure pulse; long laser pulse; polyethylene; short laser pulse; space charge; Charge measurement; Current measurement; Dielectric measurements; Laminates; Optical pulses; Power lasers; Pulse measurements; Space charge; Stress measurement; Surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 1995. International Symposium on

Conference_Location

Tokyo

Print_ISBN

4-88686-047-8

Type

conf

DOI

10.1109/ISEIM.1995.496600

Filename

496600