Pulsed eddy current testing of carbon steel pipes' wall-thinning through insulation and cladding

研究成果: Article査読

66 被引用数 (Scopus)

抄録

Pulsed eddy current testing of wall-thinning through cladding and insulation was studied from both theoretical and experimental aspects. The analytical solution was derived for a simplified four-layered structure and was used to conduct simulations to ascertain the feasibility of this method. A pulsed eddy current testing probe consisting of a circular excitation coil and an AMR-sensor-embedded differential detector was fabricated to measure the time-varying magnetic field signals on the axisymmetric excitation coil's axis. The measurement system was able to measure magnetic field down to a few hundred micro-Gausses in an unshielded environment. Simulation and test results showed that over a certain time after turning off the excitation current the magnetic field signal's decay behavior is almost merely relevant to the pipe's wall thickness. Future development of a carbon steel pipe's wall-thinning can be evaluated by using decay coefficients estimated from previously obtained test data.

本文言語English
ページ(範囲)215-224
ページ数10
ジャーナルJournal of Nondestructive Evaluation
31
3
DOI
出版ステータスPublished - 2012 9 1
外部発表はい

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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