BS IS0 19604:2018 Bsl Standards Publication Fine ceramics (advanced ceramics, advanced technical ceramics) Mechanical properties of ceramic composites at high temperature Determination of stress- rupture time diagram under constant tensile loading bsi. BSISO19604:2018 BRITISH STANDARD Nationalforeword This British Standard is the UK implementation of IS019604:2018. The UK participation in its preparation was entrusted to Technical Committee RPI/13, Advanced technical ceramics. A list of organizations represented on this committee can be obtained on requestto its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. TheBritishStandards Institution2018 Published byBSI StandardsLimited 2018 ISBN9780580866845 ICS81.060.30 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on30April2018. Amendments/corrigendaissuedsincepublication Date Textaffected BS IS0 19604:2018 ISO INTERNATIONAL STANDARD 19604 First edition 2018-05-01 Fine ceramics (advanced ceramics advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature - Determination of stress-rupture time diagram under constant tensile loading Céramiques techniques (ceramiques avancées,ceramiquestechniques avancées)Propriétésmécaniquesdescompositesamatrice Determinationdudiagrammecontraintetempsderupturesous chargementconstantentraction Referencenumber IS019604:2018(E) ISO @IS02018 BSIS019604:2018 IS0 19604:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018, Published in Switzerland 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 Ch.de Blandonnet 8.CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org ii ISO 2018-Allrights reserved BSISO19604:2018 IS019604:2018 Contents Page Foreword V 1 Scope .1 2 Normativereferences .1 3 Terms, definitions and symbols. .1 4 Principle .3 5 Significance and use .3 6 Apparatus. .3 6.1 Testmachine 3 6.2 Gripping devices 4 6.2.1 General 4 6.2.2 Activegripping devices 4 6.2.3 Passive gripping devices 4 6.3 Test chamber 4 6.4 Load indicator. 4 6.5 Extensometer 6 6.5.1 General. 6 6.5.2 Mechanical extensometer 7 6.5.3 Electronic optical extensometer 7 6.6 Heating apparatus. 7 6.7 Temperaturemeasurementdevices 7 6.8 Data recording system 8 6.9 Micrometers 8 8 7 Test specimens 7.1 Test specimen geometry 8 7.2 End tabs of specimen. 9 7.3 Testspecimenpreparation 10 7.4 Number of test specimens 11 Test preparation 8 .11 8.1 Alignmentadjustmentintensileaxisdirection .11 8.2 Adjustment of heating apparatus and temperature measuring device .11 8.3 Measurement oftest specimen dimension .11 9 Test procedures .12 9.1 Testing technique 12 9.1.1 .12 Test specimen mounting 9.1.2 Setting of extensometers 12 9.1.3 Setting of inertatmosphere .12 9.1.4 .12 Heatingthetestspecimen Monitoring of temperature and elongation .13 9.1.5 9.1.6 Applying load .13 9.2 Post-testing treatment. 13 9.3 Test validity .13 9.4 Stress levels in tests 14 9.5 Accidental interruptionofthetest 14 10 Calculation of results .14 10.1 Tensile applied stress 14 10.2 Tensile strain .15 10.3 Drawing of tensile strain curve .15 10.4 Drawing of stress-rupturediagram ..15 11 Test report. .15 @ IS0 2018 - All rights reserved iii BSIS019604:2018 IS019604:2018 Annex A (informative) Measurementprocedure ofbendingratio intheadjustment ofa tensileaxis .17 iv IS02018-Allrights reserved BSIS019604:2018 IS019604:2018 Foreword Iso (theInterna