2009 Fiscal Year Final Research Report
Development of in-situ measurement method of internal strain and critical current of composite superconductors and their quantitative evaluation
| Project/Area Number |
18106011
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| Research Category |
Grant-in-Aid for Scientific Research (S)
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| Allocation Type | Single-year Grants |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | Kyoto University |
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Principal Investigator |
OCHIAI Shojiro Kyoto University, 工学研究科, 教授 (30111925)
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| Co-Investigator(Kenkyū-buntansha) |
OKUDA Hiroshi 京都大学, 工学研究科, 准教授 (50214060)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 超伝導複合材料 / 残留ひずみ / X線回折 / モデリング / 臨界電流 |
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| Research Abstract |
The present work aimed to construct a quantitative estimation method of correlation of thermal- and externally applied strains to superconducting property of superconducting composite tape by developing in-situ strain measurement method with X ray diffraction method and modeling based on the experimental results. The residual strain accumulation process, tensile/bending strain dependence of critical current and n-value, distribution of critical current under applied strain, which is different from specimen to specimen due to the difference in extent of damage, and its statistical feature, sample length-dependence of critical current and n-value under applied strain and effect of lamination of high modulus material to composite tape on strain tolerance of critical current in Bi2223 composite tapes were quantitatively elucidated.
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