DIN ISO 1924-3-2007 Paper and board - Determination of tensile properties - Part 3 Constant rate of elongation method (100 mm min) (ISO 1924-3 2005)《纸和纸板 拉伸性能的测定 第3部分 恒定伸长率法(100mm .pdf
《DIN ISO 1924-3-2007 Paper and board - Determination of tensile properties - Part 3 Constant rate of elongation method (100 mm min) (ISO 1924-3 2005)《纸和纸板 拉伸性能的测定 第3部分 恒定伸长率法(100mm .pdf》由会员分享,可在线阅读,更多相关《DIN ISO 1924-3-2007 Paper and board - Determination of tensile properties - Part 3 Constant rate of elongation method (100 mm min) (ISO 1924-3 2005)《纸和纸板 拉伸性能的测定 第3部分 恒定伸长率法(100mm .pdf(14页珍藏版)》请在麦多课文档分享上搜索。
1、June 2007DEUTSCHE NORM English price group 10No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 85.060!,y$“www.din.deDDIN
2、 ISO 1924-3Paper and board Determination of tensile properties Part 3: Constant rate of elongation method (100 mm/min)(ISO 1924-3:2005)English version of DIN ISO 1924-3:2007-06Papier und Pappe Bestimmung von Eigenschaften bei zugfrmiger Belastung Teil 3: Verfahren mit konstanter Dehngeschwindigkeit
3、(100 mm/min) (ISO 1924-3:2005)Englische Fassung DIN ISO 1924-3:2007-06www.beuth.de9860156Document comprises 14 pages 09.07DIN ISO 1924-3:2007-06 2 National foreword This standard has been prepared by Technical Committee ISO/TC 6/SC 2 “Test methods and quality specifications for paper and board” (Sec
4、retariat: SIS, Sweden). The responsible German body involved in its preparation was the Normenausschuss Papier und Pappe (Paper and Board Standards Committee), Technical Committee NA 062-04-26 GA (previously NMP 426/NPa) Physikalisch-technologische Prfverfahren fr Papier und Pappe. The DIN Standards
5、 corresponding to the International Standards referred to in clause 2 of the ISO Standard are as follows: ISO 186 DIN EN ISO 186 ISO 187 DIN EN 20187 ISO 534 DIN EN ISO 534 ISO 536 DIN EN ISO 536 The text of the International Standard ISO 1924-3 “Paper and board Determination of tensile properties P
6、art 3: Constant rate of elongation method (100 mm/min)” was adopted without any modification. National Annex NA (informative) Bibliography DIN EN 20187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples DIN
7、 EN ISO 186, Paper and board Sampling to determine average quality DIN EN ISO 534, Paper and board Determination of thickness, density and specific volume DIN EN ISO 536, Paper and board Determination of grammage Contents Page Introduction 1 Scope . 2 Normative references . 3 Terms and definitions.
8、4 Principle. 5 Apparatus 6 Calibration and adjustment of apparatus. 7 Sampling and preparation of test pieces . 7.1 Sampling 7.2 Conditioning 7.3 Preparation of test pieces 8 Procedure 9 Calculation and report 9.1 Tensile strength 9.4 9.5 9.7 9.8 Bibliography . 3 Paper and board Determination of ten
9、sile properties Part 3: Constant rate of elongation method (100 mm/min) DIN ISO 1924-3:2007-06 4555668888889910 1010111112 121212 1213149.2 Tensile index .9.3 Strain at break .Tensile energy absorption .Tensile energy absorption index. 11 Test report . 10 Precision10.1 Repeatability10.2 Reproducibil
10、ityTensile stiffness index .Modulus of elasticity 9.6 Tensile stiffness Introduction This part of ISO 1924 has been developed in order to specify the conditions for determining the tensile properties of paper, including tensile stiffness and tensile stiffness index, using a higher rate of elongation
11、 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 properties are measured at a constant rate of elongation of 20 mm/min at a test span of 180 mm. F
12、or 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 two methods. In addition to the properties measured in ISO 1924-2, the tensile stiffness is a
13、lso 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. This part of ISO 1924 differs from existing standards for testing tensile properties in th
14、at 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 testing time, thus making it possible to test a greater number of samples within a given time peri
15、od. 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 strength, strain at break, tensile energy absorption and tensile stiffness. In a study within SCAN
16、-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) to 100 mm/min (at a test span length of 100 mm). It is not possible to predict the exact rela
17、tionship 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. In this part of ISO 1924, the same terminology and symbols are used as in general literatu
18、re concerning physics and mechanics of materials. 4 DIN ISO 1924-3:2007-06 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
19、mm/min). This part of ISO 1924 also specifies equations for calculating the tensile index, the tensile energy absorption index, the tensile stiffness index and the modulus of elasticity. When tensile stiffness is to be determined, a greater accuracy is required in the elongation measurement than whe
20、n the other tensile properties are to be determined. If the elongation is determined with the lower accuracy, the tensile stiffness value obtained is not in accordance with this part of ISO 1924. This part of ISO 1924 is applicable to all papers and boards, including papers of high extensibility, su
21、ch as creped papers and extensible sack papers, but with the exception of low-density papers such as tissue papers and tissue products for which ISO 12625-42is recommended. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated ref
22、erences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 186, Paper and board Sampling to determine average quality ISO 187, Paper, board and pulps Standard atmosphere for conditioning and testing and proce
23、dure for monitoring the atmosphere and conditioning of samples ISO 534, Paper and board Determination of thickness, density and specific volume ISO 536, Paper and board Determination of grammage 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1
24、 tensile strength maximum tensile force per unit width that paper and board will withstand before breaking under the conditions defined in this standard test method 3.2 tensile index tensile strength divided by the grammage 5 DIN ISO 1924-3:2007-06 3.3 elongation increase in length of a test piece 3
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