Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading: II. Interstrand contact resistances

Arend Nijhuis; Niels H.W. Noordman; Herman H.J. ten Kate; Neil Mitchell; Pierluigi Bruzzone

doi:10.1109/77.783404

Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading: II. Interstrand contact resistances

Arend Nijhuis, Niels H.W. Noordman, Herman H.J. ten Kate, Neil Mitchell, Pierluigi Bruzzone

Research output: Contribution to journal › Article › Academic › peer-review

28 Citations (Scopus)

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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.

Original language	English
Pages (from-to)	754-757
Journal	IEEE transactions on applied superconductivity
Volume	9
Issue number	2
DOIs	https://doi.org/10.1109/77.783404
Publication status	Published - 1999
Event	1998 Applied Superconductivity Conference, ASC 1998 - Desert Springs Resort, Palm Desert, United States Duration: 13 Sept 1998 → 18 Sept 1998

Keywords

Niobium alloys
Electric resistance measurement
Fusion reactor design
Superconducting cables
Magnetic forces
Superconducting coils
Superconducting magnets
Contact resistance
Magnetic force microscopy
Tin alloys

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10.1109/77.783404

Nijhuis1999electromagneticFinal published version, 461 KB

28 Citations
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Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading, part 2: interstrand contact resistances
Nijhuis, A., Noordman, N. H. W., ten Kate, H. H. J., Mitchell, N. & Bruzzone, P., 14 Oct 1998, Palm Desert, CA, USA
Research output: Other contribution › Other research output

Cite this

@article{255f5a4907574a9e8dcb8276731084c0,

title = "Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading: II. Interstrand contact resistances",

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.",

keywords = "Niobium alloys, Electric resistance measurement, Fusion reactor design, Superconducting cables, Magnetic forces, Superconducting coils, Superconducting magnets, Contact resistance, Magnetic force microscopy, Tin alloys",

author = "Arend Nijhuis and Noordman, {Niels H.W.} and {ten Kate}, {Herman H.J.} and Neil Mitchell and Pierluigi Bruzzone",

year = "1999",

doi = "10.1109/77.783404",

language = "English",

volume = "9",

pages = "754--757",

journal = "IEEE transactions on applied superconductivity",

issn = "1051-8223",

publisher = "IEEE",

number = "2",

note = "1998 Applied Superconductivity Conference, ASC 1998, ASC ; Conference date: 13-09-1998 Through 18-09-1998",

}

Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading: II. Interstrand contact resistances. / Nijhuis, Arend; Noordman, Niels H.W.; ten Kate, Herman H.J. et al.
In: IEEE transactions on applied superconductivity, Vol. 9, No. 2, 1999, p. 754-757.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading

T2 - 1998 Applied Superconductivity Conference, ASC 1998

AU - Nijhuis, Arend

AU - Noordman, Niels H.W.

AU - ten Kate, Herman H.J.

AU - Mitchell, Neil

AU - Bruzzone, Pierluigi

PY - 1999

Y1 - 1999

N2 - 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.

AB - 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.

KW - Niobium alloys

KW - Electric resistance measurement

KW - Fusion reactor design

KW - Superconducting cables

KW - Magnetic forces

KW - Superconducting coils

KW - Superconducting magnets

KW - Contact resistance

KW - Magnetic force microscopy

KW - Tin alloys

U2 - 10.1109/77.783404

DO - 10.1109/77.783404

M3 - Article

SN - 1051-8223

VL - 9

SP - 754

EP - 757

JO - IEEE transactions on applied superconductivity

JF - IEEE transactions on applied superconductivity

IS - 2

Y2 - 13 September 1998 through 18 September 1998

ER -

Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading: II. Interstrand contact resistances

Abstract

Keywords

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Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading, part 2: interstrand contact resistances

Cite this