ISO INTERNATIONAL STANDARD 26203-2 First edition 2011-10-15 Corrected version 2012-03-15 Metallic materials Tensile testing at high strain rates Part 2: Servo-hydraulic and other test systems Matériaux métalliques - Essai de traction a vitesses de deformation élevees Partie 2: Systemes d'essai servo-hydrauliques et autres systemes d'essai Reference number ISO 26203-2:2011(E) ISO ISO2011 ISO 26203-2:2011(E) Contents Page Foreword .iv Introduction 1 Scope 2 Normative reference: 3 Terms and definitions 4 Symbols 5 Principle. 3 6 Apparatus . 3 7 Testpieces 3 7.1 Test piece geometry 7.2 Preparation of test pieces 8 Procedure and measurements 5 8.1 Velocity selection 8.2 Force measurement. 5 8.3 Extension measurement. 8.4 Data acquisition. 6 9 Evaluation of tests 6 9.1 Stress-strain curve 9.2 Determination of key values. 9.3 Strain rates... 9.4 Determinationofflowcurves 10 Test report 9 Annex A (informative) Testing equipment. 10 Annex B (informative) Examples of test piece geometries 12 Annex C (informative) Example of an engineering stress-strain curve 14 Bibliography 15 @ ISO 2011 - All rights reserved ili ISO 26203-2:2011(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adoptedbythetechnical committeesarecirculatedtothememberbodiesforvoting.Publicationas 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 26203-2 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 strainrates Part 1: Elastic-bar-type systems Part 2: Servo-hydraulic and other test systems This corrected version of IsO 26203-2:2011 incorporates the following correction: Figure A.2 a) The figure missing above Example 1 has been added. i @ ISO 2011 -All rights reserved