Title :
Acoustic Emission Associated with Tree Growth in Polymeric Materials
Author :
Kagawa, Y. ; Yamazaki, S.
Author_Institution :
Dept. of Electrical Engineering National University Toyama Takaoka Toyama, Japan
Abstract :
The acoustic emission associated with the initiation and the growth of electrical trees inpolymeric materials is examined under ac voltage application. Two kinds of acoustic emission waveform, a burst type and an impulse type, are observed, which suggest different tree-forming causes. The procedure can provide not only a non-destructive testing technique but also a means for investigating the tree-forming mechanism.
Keywords :
Acoustic emission; Acoustic materials; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Needles; Polyethylene; Polymers; Trees - insulation; Voltage;
Journal_Title :
Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TEI.1982.298500
