ISO-1926-2005.pdf
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1、INTERNATIONAL STANDARD ISO 1926 Third edition 2005-07-15 Reference number ISO 1926:2005(E) ISO 2005 Rigid cellular plastics Determination of tensile properties Plastiques alvolaires rigides Dtermination des caractristiques en traction Copyright International Organization for Standardization Provided
2、 by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 02:28:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1926:2005(E) ii ISO 2005 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with
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4、icy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every
5、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 2005 All rights reserved. Unless otherwise specified, no part of this publication
6、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 office Case postale 56 CH-1211 Geneva 20 Te
7、l. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 02:28:47 MDTNo reproduction or networki
8、ng permitted without license from IHS -,-,- ISO 1926:2005(E) ISO 2005 All rights reserved iii Contents Page 1Scope 1 2Normative references 1 3Principle 1 4Apparatus . 1 5Test specimens 2 6Procedure (general method) . 2 7Calculation and expression of results . 3 8Variant Use of metal plates 4 9Precis
9、ion . 6 10Test report 6 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 02:28:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1926:2005(E) iv ISO 2005 All rights
10、reserved Foreword ISO (the International Organization for Standardization) is a worldwide 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
11、which a technical committee has been established has the right to be represented on that 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 al
12、l matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are
13、circulated to the member bodies for voting. Publication as an International Standard requires 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 document may be the subject of patent rights. ISO shall not be held res
14、ponsible for identifying any or all such patent rights. ISO 1926 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 10, Cellular plastics. This third edition cancels and replaces the second edition (ISO 1926:1979), which has been technically revised. Copyright International Org
15、anization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 02:28:47 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 1926:2005(E) ISO 2005 All rights reserved 1 Rigid cellular plasti
16、cs Determination of tensile properties 1Scope This International Standard specifies a method of determining the behaviour of rigid cellular plastics materials when they are subjected to a tensile stress. It applies primarily to cellular materials having a compression resistance sufficient to permit
17、suitable gripping of the test specimens. If it is impossible to grip the test specimen, the method is modified so that the ends of the specimen are reinforced with metal plates (see Clause 8). The relationship between cell size and test specimen size must be such that the test is realistic. 2Normati
18、ve references 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 291, Plastics Standard atmosphe
19、res for conditioning and testing ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method 3Principle A test specimen of a given shape is subjected to a tensile str
20、ess transmitted to the test specimen by means of a suitable device and corresponding stress-strain curve is plotted. 4Apparatus The test machine shall be such that: a)It has clamps suitable for holding the test specimen. These clamps shall meet the following requirements: 1)they shall close sufficie
21、ntly tightly on the faces of the test specimen to avoid slipping; 2)they shall not exert, on any part of the ends of the test specimen, localized pressure which could cause tears, deformations or ruptures. In cases of difficulty, use the variant described in Clause 8. b)The movable clamp can be move
22、d, with the test specimen in place, away from the fixed clamp at a constant speed of in a direction parallel to the longitudinal axis of the test specimen. c)The force thus exerted on the test specimen can be determined with a maximum error of , and can be recorded. d)If an extensometer is used, it
23、shall exert a minimum force on the test specimen and shall permit the increase in gauge length of the test specimen to be read to an accuracy of . The distance between the two parallel surfaces defining the extensometer gauge length shall not vary by more than (tolerance on parallelism). (51)mm/min
24、1 % 0,1 mm 1 % Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 02:28:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1926:2005(E) 2 ISO 2005 All rights reserved 5
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