EN 61788-6:2008
(Main)Superconductivity - Part 6: Mechanical properties measurement - Room temperature tensile test of Cu/Nb-Ti composite superconductors
Superconductivity - Part 6: Mechanical properties measurement - Room temperature tensile test of Cu/Nb-Ti composite superconductors
This part of IEC 61788 covers a test method detailing the tensile test procedures to be carried out on Cu/Nb-Ti superconductive composite wires at room temperature. This test is used to measure modulus of elasticity, 0,2 % proof strength of the composite due to yielding of the copper component, and tensile strength. The value for percentage elongation after fracture and the second type of 0,2 % proof strength due to yielding of the Nb-Ti component serves only as a reference (see Clauses A.1 and A.2). The sample covered by this test procedure has a round or rectangular cross-section with an area of 0,15 mm2 to 2 mm2 and a copper to superconductor volume ratio of 1,0 to 8,0 and without the insulating coating. This second edition cancels and replaces the first edition published in 2000. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - the minimum distance between grips was changed from 100 mm to 60 mm; - accuracy and precision statement were converted to uncertainty statements.
Supraleitfähigkeit - Teil 6: Messung der mechanischen Eigenschaften - Messung der Zugfestigkeit von Cu/NbTi-Verbundsupraleitern bei Raumtemperatur
Supraconductivité - Partie 6: Mesure des propriétés mécaniques - Essai de traction à température ambiante des composites supraconducteurs de Cu/Nb-Ti
Superprevodnost - 6. del: Meritve mehanskih lastnosti - Natezni preskus pri sobni temperaturi za superprevodnike iz kompozita Cu/Nb-Ti (IEC 61788-6:2008)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2008
Superprevodnost - 6. del: Meritve mehanskih lastnosti - Natezni preskus pri sobni
temperaturi za superprevodnike iz kompozita Cu/Nb-Ti (IEC 61788-6:2008)
Superconductivity - Part 6: Mechanical properties measurement - Room temperature
tensile test of Cu/Nb-Ti composite superconductors
Supraleitfähigkeit - Teil 6: Messung der mechanischen Eigenschaften - Messung der
Zugfestigkeit von Cu/NbTi-Verbundsupraleitern bei Raumtemperatur
Supraconductivité - Partie 6: Mesure des propriétés mécaniques - Essai de traction à
température ambiante des composites supraconducteurs de Cu/Nb-Ti
Ta slovenski standard je istoveten z: EN 61788-6:2008
ICS:
29.050 Superprevodnost in prevodni Superconductivity and
materiali conducting materials
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 61788-6
NORME EUROPÉENNE
May 2008
EUROPÄISCHE NORM
ICS 29.050; 77.040.10 Supersedes EN 61788-6:2001
English version
Superconductivity -
Part 6: Mechanical properties measurement -
Room temperature tensile test of Cu/Nb-Ti composite superconductors
(IEC 61788-6:2008)
Supraconductivité - Supraleitfähigkeit -
Partie 6: Mesure des propriétés Teil 6: Messung der mechanischen
mécaniques - Eigenschaften -
Essai de traction à température ambiante Messung der Zugfestigkeit von
des composites supraconducteurs de Cu/NbTi-Verbundsupraleitern
Cu/Nb-Ti bei Raumtemperatur
(CEI 61788-6:2008) (IEC 61788-6:2008)
This European Standard was approved by CENELEC on 2008-04-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61788-6:2008 E
Foreword
The text of document 90/207/FDIS, future edition 2 of IEC 61788-6, prepared by IEC TC 90,
Superconductivity, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61788-6 on 2008-04-01.
This European Standard supersedes EN 61788-6:2001.
– the minimum distance between grips was changed from 100 mm to 60 mm;
– accuracy and precision statement were converted to uncertainty statements.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-01-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-04-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61788-6:2008 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61788-5 NOTE Harmonized as EN 61788-5:2001 (not modified).
__________
- 3 - EN 61788-6:2008
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
1)
IEC 60050-815 - International Electrotechnical Vocabulary - -
(IEV) -
Part 815: Superconductivity
1) 2)
ISO 376 - Metallic materials - Calibration of EN ISO 376 2004
force-proving instruments used for the
verification of uniaxial testing machines
1)
ISO 6892 - Metallic materials - Tensile testing at ambient - -
temperature
1) 2)
ISO 7500-1 - Metallic materials - Verification of static EN ISO 7500-1 2004
uniaxial testing machines -
Part 1: Tension/compression testing
machines - Verification and calibration of the
force-measuring system
1) 2)
ISO 9513 - Metallic materials - Calibration of EN ISO 9513 2002
extensometers used in uniaxial testing
1)
Undated reference.
2)
Valid edition at date of issue.
IEC 61788-6
Edition 2.0 2008-01
INTERNATIONAL
STANDARD
Superconductivity –
Part 6: Mechanical properties measurement – Room temperature tensile test of
Cu/Nb-Ti composite superconductors
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
S
ICS 29.050; 77.040.10 ISBN 2-8318-9529-4
– 2 – 61788-6 © IEC:2008(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Terms and definitions .6
4 Principle .7
5 Apparatus.7
5.1 Conformity.7
5.2 Testing machine .7
5.3 Extensometer .8
6 Specimen preparation.8
6.1 Straightening the specimen .8
6.2 Length of specimen .8
6.3 Removing insulation .8
6.4 Determination of cross-sectional area (S ) .8
o
7 Testing conditions .8
7.1 Specimen gripping.8
7.2 Pre-loading and setting of extensometer .8
7.3 Testing speed.8
7.4 Test.9
8 Calculation of results .9
8.1 Tensile strength (R ) .9
m
8.2 0,2 % proof strength (R and R ) .9
p0,2A p0,2B
8.3 Modulus of elasticity (E and E ) .9
o a
9 Uncertainty.10
10 Test report.10
10.1 Specimen .10
10.2 Results.10
10.3 Test conditions.11
Annex A (informative) Additional information relating to Clauses 1 to 10 .13
Annex B (informative) Uncertainty considerations .18
Bibliography.21
Figure 1 – Stress-strain curve and definition of modulus of elasticity and 0,2 % proof
strengths .12
Figure A.1 – An example of the light extensometer, where R1 and R3 indicate the
corner radius .16
Figure A.2 – An example of the extensometer provided with balance weight and
vertical specimen axis.17
61788-6 © IEC:2008(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
SUPERCONDUCTIVITY –
Part 6: Mechanical properties measurement –
Room temperature tensile test of Cu/Nb-Ti
composite superconductors
FOREWORD
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International Standard IEC 61788-6 has been prepared by IEC technical committee 90:
Superconductivity.
This second edition cancels and replaces the fi
...
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