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Report No.

Stress/strain effects on industrial superconducting composites

Ito, Takayoshi; Harjo, S.; Osamura, Kozo*; Hemmi, Tsutomu; Awaji, Satoshi*; Machiya, Shutaro*; Oguro, Hidetoshi*; Nishijima, Gen*; Takahashi, Koki*; Matsui, Kunihiro; Tsuchiya, Yoshinori*; Arima, Hiroshi; Aizawa, Kazuya; Koizumi, Norikiyo; Nakamoto, Tatsushi*; Ogitsu, Toru*

The construction of the engineering materials diffractometer TAKUMI at J-PARC has been finished at the end of March 2009, and user programs have been started since January 2009. We proposed a project research with the title of "Stress/strain effects on industrial superconducting composites", and have carried out several preliminary experiments at TAKUMI. This project research aims to clarify internal strains behaviors in industrial superconducting materials generated due to their processes and/or during uses, and to understand the relation between the internal strains and their superconducting properties. Our interests are in developments of superconducting (Nb$$_3$$Sn, Nb$$_3$$Al, etc.) strands and HTC tapes, and in developments of superconducting (ITER and LHC) cables (composing many superconducting strands or tapes and other stabilizing and/or strengthening materials). In this opportunity, we will report our project research status more details.



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