Title :
An investigation of low frequency dielectric response to monitor radiation induced changes in epoxy resin samples
Author :
Al-Attabi, A. ; Fouracre, R.A. ; Banford, H.M. ; Li, H.M.
Author_Institution :
Centre for Electr. Power Eng., Strathclyde Univ., Glasgow, UK
Abstract :
Measurements of ε" as a function of frequency and temperature have been undertaken in a preliminary investigation of the effects of neutron radiation on samples of an epoxy resin. Samples were produced from a diglycidel ether of bisphenol A resin. Transient discharging currents were also measured, and attempts were made to analyze the data using either the Hamon approximation or a Fourier transform technique. The preliminary data indicate that the DC transient is not governed by a t-n dependence. Fourier analysis of these data to obtain low-frequency dielectric information indicates the presence of a loss peak. The increase of ε" at lower frequencies observed in the loss analyzer data might be attributable to DC conductivity effects
Keywords :
Fourier analysis; dielectric losses; epoxy insulation; neutron effects; transient analysis; DC conductivity effects; DC transient; Fourier analysis; Fourier transform technique; Hamon approximation; diglycidel ether of bisphenol A resin; epoxy resin samples; loss peak; low frequency dielectric response; neutron radiation; radiation induced changes; transient discharging currents; Current measurement; Data analysis; Dielectric losses; Dielectric measurements; Epoxy resins; Frequency measurement; Monitoring; Neutrons; Temperature; Transient analysis;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-0966-9
DOI :
10.1109/CEIDP.1993.378920
