ISO INTERNATIONAL STANDARD 9538 Secondedition 2017-04 Aerospace series Hydraulic tubing joints and fittings - Planar flexure test Série aérospatiale - Joints et raccords des tuyauteries hydrauliques Essaideflexionplane Reference number ISO 9538:2017(E) International Organization for Standardization @ IS0 2017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under I itted without license from IHS IS0 9538:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,PublishedinSwitzerland 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 +41227490947 copyright@iso.org www.iso.org Intenationai br PrganizationforStandardization icensee-ZHEJIANG INST OF STANDARDIZRoISQ s1.7 - All rights reserved I by IHS unde Not for Resale, 2017/8/21 01:01:32 etworking permitted without license from IHS IS0 9538:2017(E) Contents Page Foreword ..iv Introduction. 1 Scope 2 Normative references 3 Terms and definitions 4 Device for flexure test 5 ..3 6 Stress determination. ..3 7 Procedure ..4 7.1 Instrumentation and strain gauges ..4 7.2 Frequency.. .5 7.2.1 Test frequency .5 7.2.2 Natural frequency of the specimens .5 7.2.3 Determination of tube length. 5 7.3 Bending stress calibration of test specimen .5 8 Requirements .5 Bibliography .6 Intematinal oganzation @stS2017 - All rights reserved iii See=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed without license from IHS Not for Resale, 2017/8/21 01:01:32