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IEC 61788-18-ed.1.0
Superconductivity - Part 18: Mechanical properties measurement - Room temperature tensile test of Ag- and/or Ag alloy-sheathed Bi-2223 and Bi-2212 composite superconductors
STANDARD published on 12.9.2013
The information about the standard:
Designation standards: IEC 61788-18-ed.1.0
Publication date standards: 12.9.2013
SKU: NS-413734
The number of pages: 80
Approximate weight : 240 g (0.53 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Measurement of electrical and magnetic quantitiesConducting materials
Annotation of standard text IEC 61788-18-ed.1.0 :
IEC 61788-18:2013 specifies a test method detailing the tensile test procedures to be carried out on Ag/Bi-2223 and Ag/Bi-2212 superconductive composite wires at room temperature. This test is used to measure the modulus of elasticity and to determine the 0,2 % proof strength. When the 0,2 % proof strength could not be determined due to earlier failure, the stress level at apparent strains of 0,05 %, 0,1 %, 0,15 %, 0,2 %, 0,25 % with increment of 0,05 % is measured. The values for elastic limit, fracture strength, percentage elongation after fracture and the fitted type of 0,2 % proof strength serve only as a reference. The sample covered by this test procedure should have a round or rectangular cross-section with an area of 0,3 mm2 to 2,0 mm2 (corresponding to the tape-shaped wires with width of 2,0 mm to 5,0 mm and thickness of 0,16 mm to 0,4 mm). Key words: superconductivity, mechanical properties measurement La CEI 61788-18:2013 specifie une methode dessai detaillant les modes operatoires dessai de traction a executer sur des fils composites supraconducteurs dAg/Bi-2223 et dAg/Bi-2212 a temperature ambiante. Cet essai est utilise pour mesurer le module delasticite et pour determiner la charge depreuve a 0,2 %. Lorsquon ne peut pas determiner la charge depreuve a 0,2 % en raison dune defaillance anterieure, on mesure le niveau de contrainte pour des deformations apparentes de 0,05 %, 0,1 %, 0,15 %, 0,2 %, 0,25 % avec un increment de 0,05 %. Les valeurs de la limite elastique, de la resistance a la rupture, du pourcentage dallongement apres fracture et du type ajuste de charge depreuve a 0,2 % ne servent que de reference. Il convient que lechantillon couvert par ce mode operatoire dessai ait une section circulaire ou rectangulaire dune surface de 0,3 mm2 a 2,0 mm2 (correspondant aux fils en forme de bande dune largeur de 2,0 mm a 5,0 mm et dune epaisseur de 0,16 mm a 0,4 mm). Mots cle: supraconductivite, proprietes mecaniques
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