ISO 13934-1:2013 pdf free

ISO 13934-1:2013 pdf free.Textiles – Tensile properties of fabrics
Each set shall consist of at least five test specimens, except that ifa higher degree of precision is required,more test specimens shall be tested. In accordance with Clause 5 and Annex B, no test specimens shall be cut from within 150 mm of either edge of the laboratory sample. No test specimen taken from the warp direction shall contain the same longitudinal threads and no test specimen taken from the weft direction shall contain the same picks.
The width of each test specimen shall be 50 mm t 0,5 mm (excluding any fringe) and its length shall be long enough to allow a gauge length of 200 mm, except that for fabrics where it is suspected or known from previous experience that elongation at maximum force values greater than 75 % will be obtained,the gauge length may be reduced to 100 mm. Test specimens having widths other than the preferred width of 50 mm may be tested if agreed by interested parties. In this case, the width of the test specimens shall be stated in the test report.
For fabrics which cannot be frayed in this manner, test specimens shall be cut along lines 50 mm apart and parallel to the machine or the cross-machine direction. In some woven fabrics, the direction of threads cannot be determined except by tearing, but the test specimen shall not be reduced to the specified width in this way.
When the maximum force of the wet fabric is required in addition to the maximum force when dry, strips of the appropriate width and at least twice as long as the test specimens required for a dry test shall be cut (see Annex B). Each end of each strip shall be numbered, frayed down (if relevant), and then each test specimen shall be cut crosswise into two parts, one for determining the dry maximum force and the other for determining the wet maximum force. This ensures that each pair of test specimens contains the same longitudinal yarns. For fabrics where it is suspected or known from previous experience that excessive shrinkage will occur when wet, the length of test specimens for the determination of wet maximum force shall be greater than that of test specimens for dry maximum force tests.ISO 13934-1 pdf download.