ISO/TR 15263:2024

Measurement uncertainties in mechanical tests on metallic materials — The evaluation of uncertainties in tensile testing

This document describes how the evaluation of uncertainties in tensile tests can be obtained from tests at room temperature (ISO 6892-1) or elevated temperature (ISO 6892-2). This document reports how it can be applied to tests performed at ambient and elevated temperatures under axial loading conditions with a digital acquisition of force and displacement. NOTE 1 As CWA 15261-2 and UNCERT CoP 07 reports, the tests are assumed to run continuously without interruptions on test pieces that have uniform gauge lengths. NOTE 2 Annex C gives for information an indication of the typical scatter in tensile test results for a variety of materials that have been reported during laboratory inter-comparison exercises.

Incertitudes de mesure dans les essais mécaniques sur matériaux métalliques — Évaluation des incertitudes pour les essais de traction

General Information

• Status: Published
• Publication Date: 30-Jan-2024
• ICS: 77.040.10 - Mechanical testing of metals
• Technical Committee: ISO/TC 164/SC 1 - Uniaxial testing
• Drafting Committee: ISO/TC 164/SC 1 - Uniaxial testing
• Current Stage: 6060 - International Standard published
• Start Date: 31-Jan-2024
• Due Date: 24-Sep-2022
• Completion Date: 31-Jan-2024

Standards Content (Sample)

FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 15263
ISO/TC 164/SC 1
Measurement uncertainties in
Secretariat: AFNOR
mechanical tests on metallic
Voting begins on:
2023-11-02 materials — The evaluation of
uncertainties in tensile testing
Voting terminates on:
2023-12-28
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/DTR 15263:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/DTR 15263:2023(E)
FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 15263
ISO/TC 164/SC 1
Measurement uncertainties in
Secretariat: AFNOR
mechanical tests on metallic
Voting begins on:
materials — The evaluation of
uncertainties in tensile testing
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/DTR 15263:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

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ISO/DTR 15263:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 1
3.1 Terms and definitions . 1
3.2 Symbols . 2
4 Steps for the evaluation of uncertainty . 4
4.1 General . 4
4.2 Step 1 — Defining the measurands for which uncertainty is to be evaluated . 5
4.3 Step 2 — Identifying all sources of uncertainty in the test . 6
4.4 Step 3 — Estimating the standard uncertainty for each source of uncertainty. 8
4.4.1 General . 8
4.4.2 Type A evaluation of standard uncertainty .
...

ISO/TR DTR 15263:2023(E)
ISO /TC 164/SC 1
Date: 2023-08-23
Secretariat: AFNOR
Date: 2023-10-18
Measurement uncertainties in mechanical tests on metallic
materials — The evaluation of uncertainties in tensile testing
Incertitudes de mesure pour les essais mécaniques sur matériaux métalliques — Evaluation des
incertitudes pour les essais de traction

© ISO 2023 – All rights reserved

---------------------- Page: 1 ----------------------
ISO/TR DTR 15263:2023(:(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/TR DTR 15263:2023(:(E)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 1
3.1 Terms and definitions . 1
3.2 Symbols . 3
4 Steps for the evaluation of uncertainty . 6
4.1 General . 6
4.2 Step 1 — Defining the measurands for which uncertainty is to be evaluated . 6
4.3 Step 2 — Identifying all sources of uncertainty in the test . 7
4.4 Step 3 — Estimating the standard uncertainty for each source of uncertainty . 9
4.4.1 General . 9
4.4.2 Type A evaluation of standard uncertainty . 9
4.4.3 Type B evaluation of standard uncertainty . 10
4.4.4 Uncertainty due to repeatability of measurement . 10
4.5 Step 4 — Computing the combined uncertainty, u . 11
c
4.6 Step 5 — Computing the expanded uncertainty, U . 11
5 Reporting of results. 12
Annex A (informative) Mathematical formulae for calculating uncertainties in tensile testing . 13
Annex B (informative) Worked example for calculating uncertainty in the determination of proof
strength at ambient temperature . 24
Annex C (informative) Interlaboratory scatter .
...