AS-2001.2.3.2-2001.pdf
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1、AS 2001.2.3.22001i Australian Standard TM Methods of test for textiles Method 2.3.2: Physical testsDetermination of maximum force using the grab method (ISO 13934-2:1999, MOD) PREFACE This Standard was prepared by the Standards Australia Committee TX-020, Testing of Textiles to supersede (in part) A
2、S 2001.2.31988, Methods of test for textiles, Part 2: Physical tests Determination of breaking force and extension of textile fabric. AS 2001.2.3.1 and this Standard constitute the two methods of testing for the breaking force and extension of fabric. The Standard is an adoption with national modifi
3、cations (see Appendix ZZ) and has been reproduced from ISO 13934-2:1999, TextilesTensile properties of fabricsPart 2: Determination of maximum force using the grab method. The objective of this Standard is to provide manufacturers and testing bodies with a suitable test method for determining the ma
4、ximum breaking force using the grab method. The terms normative and informative have been used in this Standard to define the application of the appendix to which they apply. A normative appendix is an integral part of a Standard, whereas an informative appendix is only for information and guidance.
5、 The major change from AS 2001.2.31988 is the separation of the strip and grab methods with the strip method now in AS 2001.2.3.1, and the grab method in AS 2001.2.3.2. Appendix ZZ outlines the differences between ISO 13934-2 and this Standard. The variations specifically relate to selection of gaug
6、e length and rate of extension that are likely to affect results and are indicated in the core text by marginal bars. As this Standard is reproduced from an International Standard, the following applies: (a)Its number appears on the cover and title page while the International Standard number appear
7、s only on the cover. (b)In the source text this part of EN ISO 13934 should read this Australian Standard. (c)A full point should be substituted for a comma when referring to a decimal marker. AS 2193, Methods for calibration and grading of force-measuring systems of testing machines compares grades
8、 of Australian testing machines to that in ISO 10012-1. Australian Grade A is equivalent to ISO Class 1 and Grade B to Class 2. Clause 6.1.2 of this Standard requires that the Class of machine be reported in the test report. For Australian purposes, it would be advisable to also report the Grade. Re
9、ferences to International Standards should be replaced by references to Australian Standards, as follows: Reference to International StandardAustralian Standard ENAS 2001Methods of test for textiles20139TextilesStandard atmospheres for conditioning and testing (ISO 139:1973) 2001.1Part 1: Conditioni
10、ng procedures AS 2001.2.3.2 Accessed by TAFE QUEENSLAND INSTITUTES on 15 Oct 2007 ii ENAS 10002 10002-2 Metallic materialsTensile testing Part 2: Verification of the force measuring system of the tensile testing machines 2193Methods for calibration and grading of force-measuring systems of testing m
11、achines 3912Quality assurance requirements for measuring equipment 30012 30012-1 Quality assurance requirements for measuring equipment Part 1: Metrological confirmation system for measuring equipment (ISO 10012-1:1992) 3912.1Part 1: Metrological confirmation system for measuring equipment (NZS 1001
12、2.1:1993 ISO 10012-1:1002) ISO 3696Water for analytical laboratory use Specification and test methods 2001 2001.4.1 Methods of test for textiles Part 4.1: Colourfastness tests Definitions and general requirements Accessed by TAFE QUEENSLAND INSTITUTES on 15 Oct 2007 1 Scope This part of EN ISO 13934
13、 specifies a procedure for the determination of maximum force of textile fabrics known as the grab test. Note : Part 1 of EN ISO 13934 describes the method known as the strip test. For informative references see annex D. The method is mainly applicable to woven textile fabrics. It may be applicable
14、to fabrics produced by other techniques. It is not normally applicable to woven elastic fabrics, geotextiles, nonwovens, coated fabrics, textile-glass woven fabrics and fabrics made from carbon fibres or polyolefin tape yarns (see annex D). The method specifies the determination of the maximum force
15、 of test specimens in equilibrium with the standard atmosphere for testing and of test specimens in the wet state. The method is restricted to the use of constant rate of extension (CRE) testing machines. 2 Normative references The following standards contain provisions which, through reference in t
16、his text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most rece
17、nt editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. EN 20139Textiles - Standard atmospheres for conditioning and testing (ISO 139:1973) ISO 3696 Water for analytical laboratory use - Specification and test methods EN 100
18、02-2Metallic materials - Tensile testing - Part 2: Verification of the force measuring system of the tensile testing machines EN 30012-1Quality assurance requirements for measuring equipment - Part 1: Metrological confirmation system for measuring equipment (ISO 10012-1:1992) 1 Accessed by TAFE QUEE
19、NSLAND INSTITUTES on 15 Oct 2007 .au Standards Australia 3 Definitions For the purposes of this part of EN ISO 13934 the following definitions apply: 3.1 Constant-rate-of-extension (CRE) testing machine Tensile-testing machine provided with one clamp which is stationary and another clamp which moves
20、 with a constant speed throughout the test, the entire testing system being virtually free from deflection (EN ISO 13934-1). 3.2 Grab test Tensile test in which only the centre part of the test specimen is gripped in the jaws of the testing machine. 3.3 Maximum force The maximum force recorded when
21、a test specimen is taken to rupture during a test under the specified conditions (EN ISO 13934-1). 3.4 Gauge length Distance between the two effective clamping points of a testing device. Note : The effective clamping points (or lines) of jaws can be checked by clamping a test specimen under specifi
22、ed pretension with carbon copy paper to produce a gripping pattern on the test specimen and/or the jaw faces (EN ISO 13934-1). 4 Principle A fabric test specimen is gripped in its centre part by jaws of specified dimensions is extended at constant rate until it ruptures. The maximum force is recorde
23、d. 2 Accessed by TAFE QUEENSLAND INSTITUTES on 15 Oct 2007 .au Standards Australia 5 Sampling Select samples either in accordance with the procedure laid down in the material specification for the fabric, or as agreed between the interested parties. In the absence of an appropriate material specific
24、ation the example of a suitable sampling procedure given in annex A may be used. An example of a suitable pattern for cutting test specimens from the laboratory sample is given in annex B. Avoid test specimens with folded or creased areas, selvedges and areas not representative of the fabric. 6 Appa
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