Method of evaluating superconducting wire

Details Method of evaluating superconducting wire Method of evaluating superconducting wire

G - Physics

01

N

G01N 29/00 (2006.01) G01N 19/08 (2006.01) G01N 29/22 (2006.01) G01R 27/00 (2006.01) G01R 31/02 (2006.01)

Patent

CA 2240697

Provided is a method of evaluating a superconducting wire which can readily evaluate change of its superconductivity such as a critical current density. The method of evaluating a superconducting wire comprises steps of measuring an acoustic transfer characteristic value (Re) of the superconducting wire before applying mechanical strain, measuring an acoustic transfer characteristic value (Pre) of the superconducting wire after applying mechanical strain, finding a relative acoustic deviation (a) between the acoustic transfer characteristic values (Re) and (Pre) with respect to mechanical strain applied to the superconducting wire, varying the strain (.epsilon.) for finding the relative acoustic deviation (.sigma.) with respect to each strain thereby finding the relation between the strain and the relative acoustic deviation (.sigma.), and evaluating the superconductivity of the superconducting wire from the relation between the strain and the relative acoustic deviation (.sigma.).

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