Wavelet analysis of scintillation discharge current on DC tracking resistance of gamma-ray irradiated polyethylene and modified polycarbonate

ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132) Pub Date : 1998-06-22 DOI:10.1109/ICSD.1998.709323

B. Du, S. Kobayashi

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引用次数: 1

Abstract

The use of organic insulating materials in environments such as space and nuclear power stations is spreading rapidly. There is increasing concern about the reliability of electrical insulation in these environments due to radiation effects on the surface characteristics of polymeric materials. Irradiation effects on tracking resistance should be investigated due to the increasing usage of organic materials in radiation-prone environments. This paper presents a study on the DC tracking resistance of gamma-ray irradiated polyethylene and modified-polycarbonate materials by use of the International Electrotechnical Commission (IEC) Publication (Publ.) 112 method. Polyethylene and modified-polycarbonate materials were irradiated in air up to 1/spl times/10/sup 7/ R and 1/spl times/10/sup 8/ R with dosage rates of 10/sup 6/ R/hr using a /sup 60/Co gamma source as the test samples. The total radiation effects on erosion depth and scintillation discharge energy levels were studied. A gaussian wavelet analysis was applied to show these scintillation discharge energy levels.

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射线辐照聚乙烯和改性聚碳酸酯直流跟踪电阻闪烁放电电流的小波分析

有机绝缘材料在太空和核电站等环境中的应用正在迅速普及。由于辐射对聚合物材料表面特性的影响，人们越来越关注这些环境中电绝缘的可靠性。由于在辐射易发环境中越来越多地使用有机材料，辐照对跟踪电阻的影响应进行调查。本文采用国际电工委员会(IEC)出版物(Publ.) 112的方法研究了伽玛射线辐照聚乙烯和改性聚碳酸酯材料的直流跟踪电阻。采用/sup 60/Co γ射线源对聚乙烯和改性聚碳酸酯材料进行辐照，辐照率为10/sup 6/ R/hr，辐照强度为1/spl倍/10/sup 7/ R和1/spl倍/10/sup 8/ R。研究了总辐射对侵蚀深度和闪烁放电能级的影响。采用高斯小波分析对闪烁放电能级进行了表征。

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ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132)

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