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Title

Transport Properties of a PIT-Nb3Sn Strand Under Transverse Compressive and Axial Tensile Stress

Authors
Boutboul, T.
Oberli, L.
Published in IEEE Transactions on Applied Superconductivity. 2008, vol. 18, no. 2, p. 976-979
Abstract A study of the critical current of a PIT strand under transverse compressive and axial tensile loads is presented. The conductor is not reinforced and has a proof strength, , of 142 MPa. Although the tensile strain at the maximum of the critical current, , is only 0.14% (low thermal precompression) the strand behaves as expected. However it is particularly sensitive to transverse compressive forces. Even relatively small forces yield to a reduction of the critical current. Qualitatively this degradation may be explained by a non-uniform deformation of filaments, yielding to irreversible micro cracks, and by a reduced of intact filaments. The recovery of upon unloading of the transverse compressive force has also been investigated.
Keywords Niobium alloysSuperconducting materials measurementsSuperconducting materials mechanical factorsSuperconducting wires.
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Research group Groupe Senatore
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SEEBER, Bernd et al. Transport Properties of a PIT-Nb3Sn Strand Under Transverse Compressive and Axial Tensile Stress. In: IEEE Transactions on Applied Superconductivity, 2008, vol. 18, n° 2, p. 976-979. https://archive-ouverte.unige.ch/unige:36296

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Deposited on : 2014-05-05

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