Detection of 'hot spots' in HTS coils and test samples with acoustic emission signals

Haigun Lee, Ho Min Kim, Joseph Jankowski, Yukikazu Iwasa

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


In this paper we report results of two series of experiments, one performed on a double-pancake coil wound with Bi2223/Ag tape and the other on coated YBCO samples to demonstrate that an acoustic emission (AE) technique is a promising diagnostic tool to detect the presence of a "hot spot" in HTS devices. The AE technique may be used as complement to standard voltage technique to facilitate early detection of the presence of a "hot spot" in HTS devices and thus help to protect the HTS devices from permanent damage.

Original languageEnglish
Pages (from-to)1298-1301
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2004 Jun
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received October 20, 2003. This work was supported in part by the Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy.


  • Acoustic emission (AE)
  • Bi2223/Ag coil
  • Detection of "hot spot" in superconductors
  • Protection
  • YBCO coated conductor

ASJC Scopus subject areas

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


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