Combined Axial Pressure and Screening Current Induced Stress Test on REBCO Pancake Coils

被引：0

作者：

Suetomi, Yu ^{[1
]}

Kim, Kwangmin ^{[1
]}

Adkins, Todd ^{[1
]}

Bai, Hongyu ^{[1
]}

Dixon, Iain R. ^{[1
]}

机构：

[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2025年 / 35卷 / 05期

基金：

美国国家科学基金会;

关键词：

Coils; Strain; Deformation; Superconducting magnets; Stress; Strain measurement; Magnetomechanical effects; Current measurement; Windings; Magnetosphere; Axial pressure; REBCO coil; screening current induced stress; ultra-high field superconducting magnet;

D O I：

10.1109/TASC.2024.3520943

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Screening current induced stress (SCIS) causes conical deformation in REBCO pancake coils. In an actual ultra-high field magnet, a REBCO pancake coil is subjected to axial pressure from upper pancake coils, in addition to SCIS. This axial pressure likely enhances the conical deformation and hoop strain. In this study, we developed a test scheme, referred to as the combined axial pressure and tape tilting (CATT) test, to investigate the degree of strain enhancement caused by axial pressure. As a result of the test, a 50% increase of hoop strain was observed at an axial load of 180 kN, leading to yielding of the REBCO tapes. Buckling deformation due to compressive hoop strain was also observed during the charging test with current in negative direction under a background field.

引用

页数：7

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