Method for testing critical characteristics of superconducting tape in multiple deformation modes

Abstract

The invention discloses a critical characteristic test method of a superconducting tape in a multi-deformation mode. The method comprises the following steps: selecting a multi-deformation mode of a current superconducting tape to be tested; if the bending deformation mode is selected, the curvature specification is further selected, a part conforming to the current specification is fixed to the lower end of a third G10 pull rod, a whole strip with the proper length is selected to be subjected to a critical test of bending deformation, and online stress adjustment is conducted; if the stretching and twisting deformation modes are selected, the stretching and twisting angle specifications of the replaceable clamping part are selected, the replaceable clamping part conforming to the angle specifications is fixed to the lower end of a G10 pull rod III, and two strips with proper lengths are selected for a critical test of stretching and twisting deformation; according to the invention, an axisymmetric structure is arranged, the stress difference between the superconducting tape without loading current and the superconducting tape with loading current is compared and observed, and an error value caused by thermal stress disturbance is found, so that interference factors in superposed stress are eliminated, and the stress test precision is improved.

Description

technical field [0001] The invention relates to the field of testing the critical properties of superconducting tapes, in particular to a method for testing critical properties of superconducting tapes in a multi-deformation mode. Background technique [0002] Since 1911, when the Dutch physicist Merlin Onnis discovered the superconducting properties of "zero resistance" and "Meisner effect" of mercury at low temperature, it has shown attractive application prospects. At present, superconducting materials and related technologies are being increasingly used in scientific research, transportation, electric power, energy, biomedicine, national defense and military and many other fields. , the application of low temperature superconductivity is facing more and more significant crises and challenges. In recent years, with the further acceleration of the practical process of high-temperature superconducting tapes, many high-tech companies, research institutions and university la...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a method for testing the critical characteristics of superconducting strips in multi-deformation mode. One of the purposes is to solve the problem that the traditional method cannot adjust the stress online. The problem of polygonal mode testing in the transmission mechanism device; the third purpose is to solve the problem that the disturbance error of thermal stress cannot be eliminated in the stress test

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