ISO INTERNATIONAL STANDARD 7743 Fifth edition 201710 Rubber,vulcanizedor thermoplastic-Determinationof compressionstress-strainproperties Caoutchouc vulcanise ou thermoplastique—Determination des proprietés de contrainte/deformation en compression Reference number IS0 7743:2017(E) @ISO 2017 IS0 7743:2017(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2017, 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 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] i IS0 2017 All rights reserved IS0 7743:2017(E) Contents Page Foreword iv Introduction A 1 Scope .1 2 Normativereferences 1 3 Terms and definitions 1 4 Principle 2 5 Apparatus and materials 2 6 Calibration 3 7 Test pieces 3 8 Number of test pieces 9 Time-lapse between vulcanization and testing 4 Conditioning 10 4 11 Temperature oftest 4 12 Procedure. 5 12.1 Measurementoftestpieces 5 12.2 Determination of stress-strain properties 5 12.2.1 Method A 5 12.2.2 Method B 12.2.3 Method C n 12.2.4 Method D 5 13 Expression ofresults 6 13.1 For methods A, B and C 6 13.2 For method D. 7 14 Test report. 8 15 Precision for methods Aand D 8 AnnexA (informative) Influence oftestpiecegeometry 9 Annex B (informative) Extrapolation of results to non-standard test pieces ..13 Annex C (normative) Calibration schedule .16 Annex D (informative) Precisionfor methods Aand D ..18 Bibliography .21 @ I50 2017 All rights reserved I!I