ISO-10471-2003.pdf
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1、 Reference number ISO 10471:2003(E) ISO 2003 INTERNATIONAL STANDARD ISO 10471 First edition 2003-12-01 Glass-reinforced thermosetting plastics (GRP) pipes Determination of the long- term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions Tubes en plastiq
2、ues thermodurcissables renforcs de verre (PRV) Dtermination de leffort la flexion ultime long terme et rflexion annulaire relative ultime long terme dans des conditions mouilles Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical St
3、andards 1/9972545001 Not for Resale, 04/21/2007 01:17:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10471:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall n
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6、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 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic o
7、r 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 office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web
8、www.iso.org Published in Switzerland ii ISO 2003 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 01:17:38 MDTNo reproduction or networking permitted without l
9、icense from IHS -,-,- ISO 10471:2003(E) ISO 2003 All rights reserved iii Contents Page Forewordiv 1 Scope1 2 Normative references .1 3 Terms and definitions.1 4 Principle.3 5 Apparatus.4 5.1 Compressive loading machine4 5.2 Force application surfaces.4 5.3 Water container.5 5.4 Measuring devices5 6
10、Test piece.6 7 Number of test pieces.6 8 Determination of the dimensions of the test piece .7 8.1 Length 7 8.2 Wall thickness .7 8.3 Mean diameter.7 9 Conditioning7 10 Procedure.7 11 Calculation.8 11.1 Extrapolation of the strain data to obtain the x-year value, x, wet.8 11.2 Calculation of the long
11、-term ultimate relative ring deflection under wet conditions, yu, wet, x/dm.8 12 Test report8 Annex A (informative) Equal increments of lg(time in h) .10 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not
12、 for Resale, 04/21/2007 01:17:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 10471:2003(E) iv ISO 2003 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). T
13、he 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 committee. International organizations, governmental and non-go
14、vernmental, 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 accordance with the rules given in the ISO/IEC Directives, Part 2.
15、 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 requires approval by at least 75 % of the member bodies casting a v
16、ote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10471 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves fo
17、r the transport of fluids, Subcommittee SC 6, Reinforced plastics pipes and fittings for all applications. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 01:17:38 MDTNo reproduc
18、tion or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 10471:2003(E) ISO 2003 All rights reserved 1 Glass-reinforced thermosetting plastics (GRP) pipes Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet
19、 conditions 1 Scope This International Standard specifies a method for determining by extrapolation the long-term ultimate bending strain and the calculation of the long-term ultimate relative ring deflection of glass-reinforced thermosetting plastics (GRP) pipes, under wet conditions. Two methods o
20、f loading are given, one using plates the other beam bars. NOTE Either method may be used for measurements of relative vertical deflection up to 28 %. When it is expected that this level is going to be exceeded then the procedure is limited to the use of at least one beam bar. 2 Normative references
21、 The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7685, Plastics piping systems Glass-reinforc
22、ed thermosetting plastics (GRP) pipes Determination of initial specific ring stiffness ISO 10928:1997, Plastics piping systems Glass-reinforced thermosetting plastics (GRP) pipes and fittings Methods for regression analysis and their use 3 Terms and definitions For the purposes of this document, the
23、 following terms and definitions apply. 3.1 vertical compressive force F vertical force, expressed in newtons, applied to a horizontal pipe to cause a vertical deflection 3.2 mean diameter dm diameter, expressed in metres, of the circle corresponding with the middle of the pipe wall cross-section an
24、d given by either of the following equations: mi dde=+ (1) me dde= (2) where di is the internal diameter, in metres; de is the external diameter, in metres; e is the wall thickness of the pipe, in metres. Copyright International Organization for Standardization Provided by IHS under license with ISO
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