ISO-17281-2002.pdf
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1、 Reference number ISO 17281:2002(E) ISO 2002 INTERNATIONAL STANDARD ISO 17281 First edition 2002-11-01 Plastics Determination of fracture toughness (GIC and KIC) at moderately high loading rates (1 m/s) Plastiques Dtermination de la tnacit la rupture (GIC et KIC ) vitesses de charge modrment leves (
2、1 m/s) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:19:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 17281:2002(E) PDF disclaimer This PDF file may contai
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5、eters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwis
6、e specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright of
7、fice Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/99807551
8、00 Not for Resale, 04/16/2007 10:19:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 17281:2002(E) ISO 2002 All rights reserved iii Contents Page Foreword iv Introduction. v 1 Scope 1 2 Normative reference 1 3 Terms and definitions. 2 4 Test specimens . 2 4.1 Specimen
9、 geometry and preparation 2 4.2 Crack length and number of test replicates. 2 4.3 Measurement of test specimen dimensions. 2 5 Test conditions 2 5.1 Loading mode 2 5.2 Test speed 2 5.3 Test atmosphere and temperature 4 6 Test Equipment . 4 6.1 Loading machine. 4 6.2 Loading rigs. 4 6.3 Instrumentati
10、on . 4 7 Control of dynamic effects. 4 7.1 Electronic filtering. 4 7.2 Mechanical damping. 5 7.3 Damping level 5 7.4 Check on speed. 6 8 Data handling. 6 8.1 Analysis of the test records and identification of fracture initiation. 6 8.2 Energy correction 9 9 Expression of results 11 9.1 Determination
11、 of KIC. 11 9.2 Determination of y. 11 9.3 Determination of GIC. 12 10 Precision 13 11 Test report 15 Annex A (informative) Estimation of curve fit parameters . 16 Annex B (informative) Recommended test report forms 17 Bibliography 22 Copyright International Organization for Standardization Provided
12、 by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:19:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 17281:2002(E) iv ISO 2002 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwid
13、e federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that
14、 committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in ac
15、cordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard req
16、uires 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 International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17281 was prep
17、ared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, Mechanical properties. Annexes A and B of this International Standard are for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Re
18、sale, 04/16/2007 10:19:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 17281:2002(E) ISO 2002 All rights reserved v Introduction This International Standard is based on a testing protocol developed by ESIS (the European Structural Integrity Society), Technical Commit
19、tee 4, Polymers and Composites, who carried out the preliminary enabling research through a series of round-robin exercises which covered a range of material samples, specimen geometries, test instruments and operational conditions see 3-6. This activity involved about thirty laboratories from twelv
20、e countries. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:19:41 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardiz
21、ation Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:19:41 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 17281:2002(E) ISO 2002 All rights reserved 1 Plastics Determination of fracture toughnes
22、s (GIC and KIC) at moderately high loading rates (1 m/s) 1 Scope This International Standard provides guidelines for determining the fracture toughness of plastics in the crack- opening mode (Mode I) by a linear elastic fracture mechanics (LEMF) approach, at load-point displacement rates of up to 1
23、m/s. It supplements ISO 13586 so as to extend its applicability to loading rates somewhat higher than is the case in the scope of the latter International Standard. Fracture testing at high loading rates presents special problems because of the presence of dynamic effects: vibrations in the test sys
24、tem producing oscillations in the recorded quantities, and inertial loads producing forces on the test specimen different from the forces sensed by the test fixture. These effects need either to be controlled and, if possible, reduced by appropriate action, or else to be taken into account through p
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