EN ISO 26203-1:2010
(Main)Metallic materials - Tensile testing at high strain rates - Part 1: Elastic-bar-type systems (ISO 26203-1:2010)
Metallic materials - Tensile testing at high strain rates - Part 1: Elastic-bar-type systems (ISO 26203-1:2010)
The two parts of ISO 26203 specify methods for testing metallic sheet materials to determine the stress‑strain characteristics at high strain rates. ISO 26203-1:2010 covers the use of elastic-bar-type systems.
The strain-rate range between 10-3 to 103 s-1 is considered to be the most relevant to vehicle crash events based on experimental and numerical calculations such as the Finite Elemental Analysis (FEA) work for crashworthiness. In order to evaluate the crashworthiness of a vehicle with accuracy, reliable stress-strain characterization of metallic materials at strain rates higher than 10-3 s-1 is essential.
The test method in ISO 26203-1:2010 covers the strain-rate range above 102 s-1.
Metallische Werkstoffe - Zugversuch bei hohen Dehngeschwindigkeiten - Teil 1: Elastische Stoßwellentechnik (ISO 26203-1:2010)
Diese Internationale Norm legt Prüfverfahren für Bleche aus metallischen Werkstoffen fest, um Kennwerte aus
dem Spannung/Dehnung-Diagramm bei Anwendung hoher Dehngeschwindigkeiten zu bestimmen. Dieser
Teil von ISO 26203 behandelt die Anwendung der Stoßwellentechnik.
Basierend auf Versuchen und Berechnungen zur Crashsicherheit, z. B. der Finite-Elemente-Analyse (FEA), ist
für Crashtests an Fahrzeugen der Dehngeschwindigkeitsbereich zwischen 10−3 s−1 und 103 s−1 am
wichtigsten.
Um eine exakte Bewertung der Crashsicherheit eines Fahrzeugs zu ermöglichen, muss das Spannungs-
Dehnungs-Verhalten metallischer Werkstoffe bei Dehngeschwindigkeiten über 10−3 s−1 zuverlässig
charakterisiert werden.
Das hier beschriebene Prüfverfahren erfasst Dehngeschwindigkeiten oberhalb von 102 s−1.
ANMERKUNG 1 Bei Dehngeschwindigkeiten unter 10−1 s−1 kann eine quasistatische Zugprüfmaschine angewendet
werden, die in ISO 7500-1 und ISO 6892-1 festgelegt ist.
ANMERKUNG 2 Dieses Prüfverfahren darf auch auf Zugproben angewendet werden, die andere Maße als die hier
beschriebenen Flachzugproben haben.
Matériaux métalliques - Essai de traction à vitesses de déformation élevées - Partie 1: Systèmes de type à barre élastique (ISO 26203-1:2010)
L'ISO 26203-1:2010 spécifie des méthodes pour les essais des tôles de matériaux métalliques en vue de déterminer les caractéristiques contrainte-déformation à vitesses de déformation élevées. L'ISO 26203-1:2010 couvre l'utilisation des systèmes d'essai de type à barre élastique.
La gamme de vitesses de déformation entre 10-3 s-1 et 103 s-1 est considérée être la plus pertinente pour les accidents de véhicule sur la base de calculs expérimentaux et numériques tels que le travail d'analyse par éléments finis (AEF) pour le comportement en cas d'accident. De façon à évaluer le comportement des véhicules en cas d'accident avec précision, une caractérisation fiable des caractéristiques contrainte-déformation des matériaux métalliques à des vitesses de déformation supérieures à 10-3 s-1 est essentielle.
La méthode d'essai dans l'ISO 26203-1:2010 couvre la gamme de vitesses de déformation au dessus de 102 s-1.
Kovinski materiali - Natezni preskus pri velikih hitrostih deformacije - 1. del: Sistem z elastičnim drogom (ISO 26203-1:2010)
Ta mednarodni standard določa metode za preskušanje kovinskih materialov v ploščah za določevanje diagrama napetost/raztezek pri velikih hitrostih deformacije. Ta del ISO 26203 zajema uporabo sistemov z elastičnim drogom.
Razpon hitrosti deformacije med 10−3 in 103 s−1 velja za najustreznejšo pri trkih vozil na osnovi eksperimentalnih in številčnih izračunov, kot je analiza po metodi končnih elementov (FEA) za odpornost pri trku. Za natančno ovrednotenje odpornosti pri trku vozila je bistvenega pomena zanesljiv diagram napetost/raztezek za kovinske materiale pri hitrostih deformacije nad 10−3 s−1.
Ta preskusna metoda zajema razpon hitrosti deformacije nad 102 s−1.
OPOMBA 1: Pri hitrostih deformacije pod 10−1 s−1 se lahko uporabi aparat za kvazistatični natezni preskus, ki ga določata ISO 7500-1 in ISO 6892-1.
OPOMBA 2: Ta preskusna metoda se lahko uporabi tudi za druge geometrije preskušancev za natezni preskus, poleg tu obravnavanih ploščatih preskušancev.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2011
.RYLQVNLPDWHULDOL1DWH]QLSUHVNXVSULYHOLNLKKLWURVWLKGHIRUPDFLMHGHO
6LVWHP]HODVWLþQLPGURJRP ,62
Metallic materials - Tensile testing at high strain rates - Part 1: Elastic-bar-type systems
(ISO 26203-1:2010)
Metallische Werkstoffe - Zugversuch bei hohen Dehngeschwindigkeiten - Teil 1:
Elastische Stoßwellentechnik (ISO 26203-1:2010)
Matériaux métalliques - Essai de traction à vitesses de déformation élevées - Partie 1:
Systèmes de type à barre élastique (ISO 26203-1:2010)
Ta slovenski standard je istoveten z: EN ISO 26203-1:2010
ICS:
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 ISO 26203-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2010
ICS 77.040.10
English Version
Metallic materials - Tensile testing at high strain rates - Part 1:
Elastic-bar-type systems (ISO 26203-1:2010)
Matériaux métalliques - Essai de traction à vitesses de Metallische Werkstoffe - Zugversuch bei hohen
déformation élevées - Partie 1: Systèmes de type à barre Dehngeschwindigkeiten - Teil 1: Elastische
élastique (ISO 26203-1:2010) Stoßwellentechnik (ISO 26203-1:2010)
This European Standard was approved by CEN on 6 February 2010.
CEN 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 CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
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Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 26203-1:2010: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 26203-1:2010) has been prepared by Technical Committee ISO/TC 164 "Mechanical
testing of metals" in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other
than chemical analysis)” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by August 2010, and conflicting national standards shall be withdrawn at
the latest by August 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 26203-1:2010 has been approved by CEN as a EN ISO 26203-1:2010 without any
modification.
INTERNATIONAL ISO
STANDARD 26203-1
First edition
2010-02-15
Metallic materials — Tensile testing at
high strain rates —
Part 1:
Elastic-bar-type systems
Matériaux métalliques — Essai de traction à vitesses de déformation
élevées —
Partie 1: Systèmes de type à barre élastique
Reference number
ISO 26203-1:2010(E)
©
ISO 2010
ISO 26203-1:2010(E)
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ii © ISO 2010 – All rights reserved
ISO 26203-1:2010(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Principles.1
4 Terms and definitions .2
5 Symbols and designations.2
6 Apparatus.4
7 Test piece .5
7.1 Test-piece shape, size and preparation .5
7.2 Typical test piece.7
8 Calibration of the apparatus.8
8.1 General .8
8.2 Displacement measuring device.9
9 Procedure.9
9.1 General .9
9.2 Mounting the test piece .9
9.3 Applying force .9
9.4 Measuring and recording.9
10 Evaluation of the test result .11
11 Test report.12
Annex A (informative) Quasi-static tensile testing method.14
Annex B (informative) Example of one-bar method .16
Annex C (informative) Example of split Hopkinson bar (SHB) method.23
Bibliography.31
ISO 26203-1:2010(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
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International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 26203-1 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee
SC 1, Uniaxial testing.
ISO 26203 consists of the following parts, under the general title Metallic materials — Tensile testing at high
strain rates:
⎯ Part 1: Elastic-bar-type systems
⎯ Part 2: Servo-hydraulic and other test systems
iv © ISO 2010 – All rights reserved
ISO 26203-1:2010(E)
Introduction
Tensile testing of metallic sheet materials at high strain rates is important to achieve a reliable analysis of
3 −1
vehicle crashworthiness. During a crash event, the maximum strain rate often reaches 10 s , at which the
strength of the material can be significantly higher than that under quasi-static loading conditions. Thus, the
reliability of crash simulation depends on the accuracy of the input data specifying the strain-rate sensitivity of
the materials.
Although there are several methods for high-strain rate testing, solutions for three significant problems are
required.
The first problem is the noise in the force measurement signal.
⎯ The test force is generally detected at a measurement point on the force measurement device that is
located some distance away from the test piece.
⎯ Furthermore, the elastic wave which has already passed the measurement point returns there by
reflection at the end of the force measurement device. If the testing time is comparable to the time for
wave propagation through the force measurement device, the stress-strain curve may have large
oscillations as a result of the superposition of the direct and indirect waves. In quasi-static testing,
contrarily, the testing time is sufficiently long to have multiple round-trips of the elastic wave. Thus, the
force reaches a saturated state and equilibrates at any point of the force measurement device.
⎯ There are two opposing solutions for this problem.
⎯ The first solution is to use a short force measurement device which will reach the saturated state
quickly. This approach is often adopted in the servo-hydraulic type system.
⎯ The second solution is to use a very long force measurement device which allows the completion of
a test before the reflected wave returns to the measurement point. The elastic-bar type system is
based on the latter approach.
The second problem is the need for rapid and accurate measurements of displacement or test piece
elongation.
⎯ Conventional extensometers are unsuitable because of their large inertia. Non-contact type methods such
as optical and laser devices should be adopted. It is also acceptable to measure displacements using the
theory of elastic wave propagation in a suitably-designed apparatus, examples of which are discussed in
this document.
⎯ The displacement
...
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