High-Tc SQUID magnetometers and gradiometers for NDE application

J. T. Jeng, H. E. Horng, H. C. Yang

研究成果: 雜誌貢獻期刊論文同行評審

10 引文 斯高帕斯(Scopus)

摘要

The performance of the superconducting quantum interference device (SQUID) nondestructive evaluation (NDE) system with a shielded magnetometer and unshielded gradiometers were investigated. In the magnetometer NDE system, the environmental noise was reduced with the SQUID seating inside a μ-metal cylinder, whereas the environmental noise was eliminated with electronic subtraction in the gradiometer NDE system. For the shielded magnetometer NDE system, the signal-to-noise ratio was improved with a higher excitation field to enhance the defect signal. For the gradiometer NDE system, the signal-to-noise ratio was improved as a result of the reduction of environmental noise. The performance of two SQUID NDE systems is compared and the results are discussed.

原文英語
頁(從 - 到)105-108
頁數4
期刊Physica C: Superconductivity and its applications
368
發行號1-4
DOIs
出版狀態已發佈 - 2002 三月 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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