ISO-1924-3-2005.pdf
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1、 Reference number ISO 1924-3:2005(E) ISO 2005 INTERNATIONAL STANDARD ISO 1924-3 First edition 2005-07-01 Paper and board Determination of tensile properties Part 3: Constant rate of elongation method (100 mm/min) Papier et carton Dtermination des proprits de traction Partie 3: Mthode gradient dallon
2、gement constant (100 mm/min) ISO 1924-3:2005(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 not be edited unless the typefaces which are embedded are licensed to and installed on the computer pe
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5、l Secretariat at the address given below. ISO 2005 All rights reserved. Unless otherwise 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
6、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 www.iso.org Published in Switzerland ii ISO 2005 All rights reserved ISO 1924-3:2005(E) ISO 2005 All
7、rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 1 4 Principle. 2 5 Apparatus 2 6 Calibration and adjustment of apparatus. 4 7 Sampling and preparation of test pieces . 4 7.1 Sampling 4 7.2 Conditioning 4 7.3 Preparation of t
8、est pieces 4 8 Procedure 4 9 Calculation and report 5 9.1 Tensile strength 5 9.2 Tensile index . 6 9.3 Strain at break. 6 9.4 Tensile energy absorption. 6 9.5 Tensile energy absorption index. 7 9.6 Tensile stiffness 7 9.7 Tensile stiffness index . 8 9.8 Modulus of elasticity 8 10 Precision 8 10.1 Re
9、peatability 8 10.2 Reproducibility 8 11 Test report . 9 Bibliography. 10 ISO 1924-3:2005(E) iv ISO 2005 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internationa
10、l 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-governmental, in liaison with ISO,
11、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. The main task of technical commi
12、ttees 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 vote. Attention is drawn to the po
13、ssibility 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 1924-3 was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee SC 2, Test methods and quality spec
14、ifications for paper and board. ISO 1924 consists of the following parts, under the general title Paper and board Determination of tensile properties: Part 2: Constant rate of elongation method 1) Part 3: Constant rate of elongation method (100 mm/min) Part 1: (Constant rate of loading method) was w
15、ithdrawn in 2004 as it was considered obsolete. 1) In Part 2, a constant rate of elongation of 20 mm/min is used. ISO 1924-3:2005(E) ISO 2005 All rights reserved v Introduction This part of ISO 1924 has been developed in order to specify the conditions for determining the tensile properties of paper
16、, including tensile stiffness and tensile stiffness index, using a higher rate of elongation than specified in ISO 1924-2, which is the most commonly used part where tensile strength, stretch at break, tensile energy absorption and modulus of elasticity are measured. In ISO 1924-2, the tensile prope
17、rties are measured at a constant rate of elongation of 20 mm/min at a test span of 180 mm. For the measuring of tensile stiffness in this part of ISO 1924, a higher accuracy in the recording of elongation, compared to ISO 1924-2, is also required. This part of ISO 1924 specifies the fastest of the t
18、wo methods. In addition to the properties measured in ISO 1924-2, the tensile stiffness is also measured. The tensile properties are measured at a constant rate of elongation of 100 mm/min at a test span of 100 mm, and the elongation is recorded with a higher accuracy than the accuracy in ISO 1924-2
19、. This part of ISO 1924 differs from existing standards for testing tensile properties in that the test span, i.e. the distance between the clamping lines, is 100 mm irrespective of the kind of sample to be tested. The rate of elongation has been increased to 100 mm/min in order to reduce the testin
20、g time, thus making it possible to test a greater number of samples within a given time period. NOTE The results of tensile tests depend on the rate of elongation applied and the test span. The rate dependence and the effect of test span may vary with paper grade and are different for tensile streng
21、th, strain at break, tensile energy absorption and tensile stiffness. In a study within SCAN-test, comparing the results achieved using ISO 1924-2 and this part, the tensile strength increased by 5 % to 15 % when the rate of elongation was increased from 20 mm/min (at a test span length of 180 mm) t
22、o 100 mm/min (at a test span length of 100 mm). It is not possible to predict the exact relationship between the results for any particular paper whose tensile properties are determined using ISO 1924-2 and this part of ISO 1924. This relationship may only be determined by laboratory experimentation
23、. In this part of ISO 1924, the same terminology and symbols are used as in general literature concerning physics and mechanics of materials. -,-,- INTERNATIONAL STANDARD ISO 1924-3:2005(E) ISO 2005 All rights reserved 1 Paper and board Determination of tensile properties Part 3: Constant rate of el
24、ongation method (100 mm/min) 1 Scope This part of ISO 1924 specifies a method for measuring the tensile strength, strain at break, tensile energy absorption and tensile stiffness, using a testing machine operating with a constant rate of elongation (100 mm/min). This part of ISO 1924 also specifies
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