Vibrations of probe used for the defect detection of helical heating tubes in a fast breeder reactor. Part 2. Vibration analysis and numerical simulations

Takumi Inoue, Atsuo Sueoka, Takeshi Maehara, Yutaka Nakano, Hiroyuki Kanemoto

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

A detection of a defect of a helical heating tube installed in the fast breeder reactor "Monju" in Japan is done by a feeding of an eddy current testing (ECT) probe with magnetic sensor into the tube. An undesirable vibration of the ECT probe always happens under a certain condition and makes the inspection difficult. Several characteristics of the vibration have been made clear by some experiments using a mock-up, but the essential factor of the vibration is still unclear. In this paper, a numerical simulation of the vibration is implemented on the assumption that the vibration is caused by Coulomb friction. An analytical model, which is obtained as a lumped mass model, is a large-scale non-linear vibration system and many computational costs are ordinarily required to carry out the simulations. The Transfer Influence Coefficient Method is applied so that the simulation is efficiently carried out. The results of simulation qualitatively agree well with the experimental results. It confirms the validity of the assumption that the vibration is caused by Coulomb friction.

本文言語英語
ページ(範囲)868-879
ページ数12
ジャーナルNuclear Engineering and Design
237
8
DOI
出版ステータス出版済み - 4 2007

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学
  • 材料科学(全般)
  • 安全性、リスク、信頼性、品質管理
  • 廃棄物管理と処理
  • 機械工学

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