書誌事項
- タイトル別名
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- Fundamental study on a diagnostic technology for degradations of cable insulation materials due to radiation exposure and aging
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説明
<p>Age-related degradations of various cables used in nuclear power plants have been of constant concern. In general, many types of polymer material are selected for cable insulators because of their high insulating performance. However, they are degraded in not only their mechanical performance but also their electric performance by radiation exposure. Since current inspection methods, such as measuring the insulation resistance, require substantially high costs and workloads, simplified nondestructive methods will be useful. We have developed a digital hammering inspection system with an AE (acoustic emission) sensor. This system detects the degradations of cable insulators due to radiation exposure and aging by assessing the frequency distributions obtained by FFT (fast Fourier transform) analysis of measured signals. In this study, we evaluated the relationship between the natural frequency obtained by the digital hammering system and the breaking elongation measured by the tensile testing of the insulating materials after electron beam irradiations of up to a maximum of 2,000 kGy for cables including those used in a nuclear power plant for about 30 years.</p>
収録刊行物
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- 日本原子力学会和文論文誌
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日本原子力学会和文論文誌 21 (2), 106-115, 2022
一般社団法人 日本原子力学会
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詳細情報 詳細情報について
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- CRID
- 1390292041055189376
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- ISSN
- 21862931
- 13472879
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
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- 抄録ライセンスフラグ
- 使用不可
