Metallic materials — Fatigue testing — Variable amplitude fatigue testing — Part 1: General principles, test method and reporting requirements

ISO 12110-1:2013 establishes general principles for fatigue testing of laboratory specimens under a sequence of cycles the amplitude of which varies from cycle to cycle. This sequence of cycles is called loading time history (see 3.7) and is usually derived from loading measurements performed on components or structures submitted to true service loadings. Detailed description of service loads recording is relevant to each laboratory or industrial sector and is therefore outside the scope of ISO 12110-1:2013. The aim of the two parts of ISO 12110 is to set requirements and give some guidance on how to perform a variable amplitude fatigue test in order to produce consistent results for comparison purposes taking into account the typical scatter of fatigue data. Achieving this should help designers to correlate models and experimental data obtained from various sources. Since ISO 12110-1:2013 involves mainly loading time histories and control signal generation, one expects it might be applied to strain or fatigue crack growth rate controlled loading conditions as well as to force-controlled loading conditions. This is theoretically true but precautions may be taken when applying this document to loading modes other than force-controlled loading mode. ISO 12110-1:2013 relates to variable amplitude loading under force control mode which corresponds to most of the variable amplitude fatigue tests performed worldwide at the date of publication. ISO 12110-1:2013 applies to the single actuator loading mode which corresponds to uniaxial loading in many cases. The variable amplitude loading time histories referred in this document are deterministic; that is why ISO 12110-1:2013 deals with variable amplitude loading instead of random loading. The following issues are not within the scope of ISO 12110-1:2013 and therefore will not be addressed: constant amplitude tests with isolated overloads or underloads; tests on large components or structures;environmental effects like corrosion, creep linked to temperature/time interactions leading to frequency and waveform effects; multiaxial loading.

Matériaux métalliques — Essais de fatigue — Essais sous amplitude variable — Partie 1: Principes généraux, méthode d'essai et exigences sur le rapport d'essai

General Information

Status
Published
Publication Date
24-Jun-2013
Current Stage
9060 - Close of review
Start Date
04-Mar-2029
Ref Project

Buy Standard

Standard
ISO 12110-1:2013 - Metallic materials -- Fatigue testing -- Variable amplitude fatigue testing
English language
24 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 12110-1
First edition
2013-07-01
Metallic materials — Fatigue testing —
Variable amplitude fatigue testing —
Part 1:
General principles, test method and
reporting requirements
Matériaux métalliques — Essais de fatigue — Essais sous
amplitude variable —
Partie 1: Principes généraux, méthode d’essai et exigences sur le
rapport d’essai
Reference number
ISO 12110-1:2013(E)
©
ISO 2013

---------------------- Page: 1 ----------------------
ISO 12110-1:2013(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 12110-1:2013(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Principle of test . 4
4.1 Control signal generation. 4
4.2 Overview of test procedure . 4
5 Original loading time history . 5
5.1 General . 5
5.2 Data filtering . 5
6 Loading time history description . 6
6.1 General . 6
6.2 Time history sequences description . 6
6.3 Cycle counting description . 6
7 Programmed blocks . 7
8 Transition matrix and generation of control signal from the matrix .7
8.1 Establishment of the matrix . 7
8.2 Reconstruction of the loading signal . 8
8.3 Control signal simplification .
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.