ISO INTERNATIONAL STANDARD 14704 Third edition 2016-04-15 Fineceramics(advancedceramics, advancedtechnicalceramics)- Test method for flexural strength of monolithic ceramics at room temperature CeramiquestechniquesMethoded'essaiderésistanceenflexiondes ceramiquesmonolithiquesatemperatureambiante Reference number IS014704:2016(E) ISO IS02016 IS014704:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, 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 the requester. ISO copyright office Ch.deBlandonnet 8·CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +4122 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org i IS02016-Allrightsreserved IS014704:2016(E) Contents Page Foreword .iv 1 Scope 1 2 Normative references. 1 3 Terms and definitions .1 4 Principle 3 5 Apparatus. 3 5.1 Testing machine 5.2 Test fixture. 3 5.2.1 General. 5.2.2 Bearings. 5.2.3 Four-point fixture: semi-articulating 5.2.4 Four-point fixture: fully articulating 5.2.5 Three-pointfixture:semi-articulating 5.2.6 Three-point fixture: fully articulating. 5.2.7 Positioning of bearings 5.2.8 Fixture material. 6 5.3 Micrometer. Testpieces 9 6 6.1 Test piece size. 6.1.1 Machined testpiece 6.1.2 As-fired orheat-treated test pieces 6 6.2 Test piecepreparation. 6.2.1 General. 6.2.2 As-fired. 6.2.3 Customarymachiningprocedure 6.2.4 Component-matchedprocedure 6.2.5 Basicmachiningprocedure. 6.2.6 Parallelism,orthogonalityandchamfersizes 8 6.2.7 Handling oftestpieces. 9 6.2.8 Numberoftestpieces.. 9 7 Procedure .9 8 Calculation .11 .12 9 Testreport. 10 Strength scalingfactors ..13 AnnexA(informative)Generalinformation .14. ...15 AnnexB(normative)Testfixtures. AnnexC(informative)Typicalfracturepatternsinceramictestpieces ..21 AnnexD(informative)Chamfercorrectionfactors ...23 AnnexE(informative)Weibullscalingfactors ..26. Bibliography .28 @ IS0 2016 - All rights reserved ili