Development of electromagnetic nondestructive testing for inspecting mechanical lap joint of higherature superconducting tapes

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

To facilitate construction and maintenance of nuclear fusion reactors, a remountable (demountable) higherature superconducting magnet was proposed. The magnet is assembled from several segments with mechanical joints. The electrical resistance of joint (joint resistance) at cryogenic temperature has great influence on the performance of the magnet, a nondestructive testing technique at room temperature is highly demanded to predict joint resistance. In this study, the electrical characteristics of the joint were focused on to develop an electromagnetic NDT technique for inspecting the joint. To identify the factors relating to the joint resistance and the correlation between the electrical characteristics, the cross sections of the joint were observed and the electrical resistance and impedance of the joint were measured. The result indicated a small air gap existing in the joint that could possibly be the cause for increment in joint resistance, though the degree of influence of such gap could not be evaluated over measured electrical resistance and impedance result. Causal analyses were conducted by numerical models, which indicated arranging the current perpendicular to the joint surface is effective for inspecting the joint. Then additional numerical analyses were conducted to evaluate the feasibility of applying the direct measurement and eddy current testing for inspection. The result showed the possibility of detecting particular air gap, optimization of the measurement condition is required.

本文言語English
ホスト出版物のタイトルProceedings of 2017 IEEE Far East NDT New Technology and Application Forum, FENDT 2017
編集者Chunguang Xu
出版社Institute of Electrical and Electronics Engineers Inc.
ページ202-206
ページ数5
ISBN(電子版)9781538616147
DOI
出版ステータスPublished - 2018 12 20
イベント2017 IEEE Far East NDT New Technology and Application Forum, FENDT 2017 - Xi'an, China
継続期間: 2017 6 222017 6 24

出版物シリーズ

名前Proceedings of 2017 IEEE Far East NDT New Technology and Application Forum, FENDT 2017

Other

Other2017 IEEE Far East NDT New Technology and Application Forum, FENDT 2017
国/地域China
CityXi'an
Period17/6/2217/6/24

ASJC Scopus subject areas

  • 材料力学
  • 安全性、リスク、信頼性、品質管理
  • 土木構造工学
  • 器械工学

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