Nondestructive evaluation of flaws using SQUIDs

J. T. Jeng, H. E. Horng, Chao Hsiang Chen, J. H. Chen, H. C. Yang

研究成果: 雜誌貢獻Conference article同行評審

5 引文 斯高帕斯(Scopus)


Using high-Tc SQUIDs, we have designed a nondestructive evaluation system to probe buried flaws. The frequency of the excitation magnetic fields was varied from 10 to 800 Hz and the magnetic fields generated from the eddy current was lock-in detected. The SQUIDs output data revealed the most effective excitation frequencies for the flaws with different depths and widths. The signal-to-noise ratio of the deep flaws can be further enhanced either by using higher excitation fields or using the SQUIDs with higher low-frequency sensitivity.

頁(從 - 到)2637-2638
期刊Physica C: Superconductivity and its applications
341-348 (IV)
出版狀態已發佈 - 2000 十一月
事件International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA
持續時間: 2000 二月 202000 二月 25

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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