Textiles. Seam tensile properties of fabrics and made-up textile articles. Part 2: Determination of maximum force to seam rupture using the grab method (ISO 13935-2:2014)
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ISO 13935-2:2014 specifies methods for the determination of seam maximum force of sewn seams when the force is applied perpendicularly to the seam. ISO 13935-2:2014 describes the method known as the grab test. The method is mainly applicable to woven textile fabrics, including fabrics which exhibit stretch characteristics imparted by the presence of an elastomeric fibre, mechanical or chemical treatment. It may be applicable to fabrics produced by other techniques. It is not normally applicable to geotextiles, nonwovens, coated fabrics, textile-glass woven fabrics and fabrics made from carbon fibres or polyolefin tape yarns. The sewn fabrics may be obtained from previously sewn articles or may be prepared from fabric samples, as agreed by the parties interested in the results. This method is applicable to straight seams only and not to curved seams. The method is restricted to the use of constant rate of extension (CRE) testing machines.
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Sampling
6 Apparatus
7 Atmosphere for conditioning and testing
8 Preparation of seams and of test specimens
8.1 Preparation of seams, if required, before testing
8.2 Dimensions
8.3 Preparation of test specimens
9 Procedure
9.1 Gauge length
9.2 Rate of extension
9.3 Mounting of test specimens
9.4 Operation
10 Calculation and expression of results
11 Test report
Annex A Arrangements of jaws for the grab test (informative)
ISO 10012:2003 Measurement management systems -- Requirements for measurement processes and measuring equipment
ISO 139:2005 Textiles -- Standard atmospheres for conditioning and testing
ISO 7500-1:2004 Metallic materials -- Verification of static uniaxial testing machines -- Part 1: Tension/compression testing machines -- Verification and calibration of the force-measuring system
ISO 10012:2003 Measurement management systems -- Requirements for measurement processes and measuring equipment
ISO 139:2005 Textiles -- Standard atmospheres for conditioning and testing
ISO 7500-1:2004 Metallic materials -- Verification of static uniaxial testing machines -- Part 1: Tension/compression testing machines -- Verification and calibration of the force-measuring system