TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
Non-destructive Inspection of Ag-sheathed Bi-2223 Superconductor Tape at Room Temperature Using Ultrasonic Wave
Yoshihiro MORITakashi HAGIWARAAkira NINOMIYATakeshi ISHIGOHKAKazuhiko HAYASHIYoshikazu IWASA
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1998 Volume 33 Issue 5 Pages 300-305

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Abstract
Ag-sheathed superconductor tape is going to be used widely for many practical applications. However, this type of conductor may suffer damage to its superconducting filaments through production lines or degradation through the winding process, such as coil winding. So we propose a new method for non-destructive inspection at room temperature using ultrasonic waves. This method is a kind of ultrasonic transfer function method using a couple of piezoelectric sensors. One is the driver and the other is the receiver. This time, the authors report the relation between the acoustic characteristic for ultrasonic waves at room temperature and the electrical characteristics at 77K using sample tapes which experienced a bending strain up to 1.0%.
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© Cryogenic Association of Japan
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