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Assessment of residual stresses in ITER CS helium inlet welds fatigue tested at cryogenic temperature

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dc.affiliation.dptoUC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructurases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Nonlinear Solid Mechanicses
dc.contributor.authorSgobba, Stefano
dc.contributor.authorAvilés Santillana, Ignacio
dc.contributor.authorLangeslag, Stefanie A. E.
dc.contributor.authorFernández Pisón, María del Pilar
dc.contributor.authorCastillo Rivero, S.
dc.contributor.authorLibeyre, P.
dc.contributor.authorJong, C.
dc.contributor.authorEveritt, D.
dc.contributor.authorFreudenberg, K.
dc.date.accessioned2020-12-21T15:17:53Z
dc.date.available2020-12-21T15:17:53Z
dc.date.issued2019-06
dc.descriptionProceeding of: 27th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2018 (ICEC-ICMC 2018), September 3-7, 2018, Oxford, United Kingdomen
dc.description.abstractThe ITER Central Solenoid (CS) consists of six independent wound modules. The cooling of the cable-in-conduit conductor is assured by a forced flow of supercritical He at 4.5 K supplied by He inlets located at the innermost radius of the coil. The inlets consist of a racetrack-shaped boss welded to the outer conduit wall through a full penetration Tungsten Inert Gas (TIG) weld. They are critical structural elements submitted to severe cyclic stresses due to the electro-magnetic forces acting on the coils. The weld contour is shape-optimised and locally processed by Ultrasonic Shot Peening (USP), conferring large compressive residual stresses on a subsurface layer of several millimetres thickness to improve fatigue strength. The distribution of the residual stresses and the effect of USP on microstructure and mechanical properties is assessed, with reference to the results of a cryogenic fatigue test campaign, performed on peened and as-welded inlets for comparison.en
dc.format.extent7es
dc.identifier.bibliographicCitationIOP Conference Series: Materials Science and Engineering, 503(1), 012095, June 2019, (27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018 (ICEC-ICMC 2018) 3-7 September 2018, Oxford, United Kingdom), 7 pp.en
dc.identifier.doihttps://doi.org/10.1088/1757-899X/502/1/012095
dc.identifier.isbn1757-8981
dc.identifier.publicationfirstpage1es
dc.identifier.publicationissue1, 012095es
dc.identifier.publicationlastpage7es
dc.identifier.publicationtitleIOP Conference Series: Materials Science and Engineering (27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018 (ICEC-ICMC 2018) 3-7 September 2018, Oxford, United Kingdom)en
dc.identifier.publicationvolume502es
dc.identifier.urihttps://hdl.handle.net/10016/31657
dc.identifier.uxxiCC/0000030603
dc.language.isoengen
dc.publisherIOP Publishing Ltd.en
dc.relation.eventdate2018-09-03es
dc.relation.eventplaceOxford, REINO UNIDOen
dc.relation.eventtitle27th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2018 (ICEC-ICMC 2018)en
dc.rightsContent from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.otherCryogenicsen
dc.subject.otherFatigue testingen
dc.subject.otherHeliumen
dc.subject.otherMechanical propertiesen
dc.subject.otherResidual stressesen
dc.subject.otherShot peeningen
dc.subject.otherSuperconducting cablesen
dc.subject.otherWeldingen
dc.subject.otherWeldsen
dc.titleAssessment of residual stresses in ITER CS helium inlet welds fatigue tested at cryogenic temperatureen
dc.typeconference paper*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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