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Radiation resistant organic composites for superconducting fusion magnets

S. Nishijima, T. Okada1993年Fusion Engineering and DesignIF 1.7出版社

AbstractOrganic composite materials (usually reinforced by glass fibers: GFRP) are to be used in fusion superconducting magnets as insulating and/or structural materials. The fusion superconducting magnets are operated under radiation environments and hence the radiation induced degradation of magnet components is ought to be estimated. Among the components the organic composite materials were evaluated to be the most radiation sensitive. Consequently the development of radiation resistant organic composite materials is thought one of the ‘key’ technologies for fusion superconducting magnets. The mechanusm of radiation-induced degradation was studied and the degradation of interlaminar shear strength (ILSS) was found to be the intrinsic phenomenon which controlled the overall degradation of organic composite materials. The degradation of ILSS was studied changing matrix resin, reinforcement and type of fabrics. The possible combination of the organic composites for the fusion superconducting magnet will be discussed.

日本語訳

有機複合材料(通常はガラス繊維強化:GFRP)は、核融合超伝導磁石において絶縁材料および/または構造材料として使用される予定である。核融合超伝導磁石は放射線環境下で運転されるため、磁石構成部品の放射線誘起劣化を評価する必要がある。構成部品の中でも、有機複合材料が最も放射線感受性が高いと評価された。その結果、耐放射線性に優れた有機複合材料の開発は、核融合超伝導磁石にとって重要な技術の一つであると考えられている。放射線誘起劣化のメカニズムを研究したところ、層間せん断強度(ILSS)の低下が有機複合材料全体の劣化を支配する本質的な現象であることが判明した。ILSSの劣化は、マトリックス樹脂、強化繊維、および織物の種類を変えて研究された。核融合超伝導磁石用の有機複合材料の可能な組み合わせについて議論する。

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