Electromagnetic and mechanical characteristion of ITER CS-MC conductors affected by transverse cyclic loading, part 2: Interstrand contact resistance

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Nijhuis, Arend and Noordman, Niels H.W. and Kate ten, Herman H.J. and Mitchell, Neil and Bruzzone, Pierluigi (1999) Electromagnetic and mechanical characteristion of ITER CS-MC conductors affected by transverse cyclic loading, part 2: Interstrand contact resistance. IEEE Transactions on Applied Superconductivity, 9 (2). pp. 754-757. ISSN 1051-8223

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Abstract:A special cryogenic press has been built to study the mechanical and electrical properties of full-size ITER multistrand Nb3Sn cable-in-conduit conductor samples under transverse, mechanical loading. This simulates the transverse magnetic force that occurs when the conductors are used in a coil. The cryogenic press can transmit a variable (cyclic) force up to 650 kN/m to a cable section of 400 mm length at 4.2 K. The jacket is opened partly in order to transmit the force directly onto the table. The various interstrand contact resistances (Rcs) between strands selected from sub-cables at different positions inside the cable are measured. A summary of the results obtained with up to several tens of full loading cycles is presented. The cables consist of six last stage sub-cables (petals) which are wrapped with an Inconel 600 ribbon. A significant increase of the intra-petal Rc after several cycles is observed. An opposite effect is noticed for the inter-petal Rc. Upon applying a load of 650 kN/m, the Rc drops for the intra-petal as well as for the inter-petal resistance with respect to zero load.
Item Type:Article
Copyright:©1999 IEEE
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/24021
Official URL:http://dx.doi.org/10.1109/77.783404
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Metis ID: 128820