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Standard Test Method for Width of Textile Fabric
Automaticky preložený názov:
Štandardná skúšobná metóda pre šírku z textilných materiálov
NORMA vydaná dňa 1.7.2012
Označenie normy: ASTM D3774-96(2012)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.7.2012
Kód tovaru: NS-24819
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
Woven fabric, width., ICS Number Code 59.080.30 (Textile fabrics)
Significance and Use | ||||||
Option A procedures of Test Method D3774 for width are considered satisfactory for acceptance testing of commercial shipments because they are used extensively in the trade. In case of a dispute arising from differences in reported test values when using Test Method D3774 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and which are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t-test for unpaired data and an acceptable probability level chosen by the two parties before testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the light of the known bias. |
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1. Scope | ||||||
1.1 This test method covers the measurement of the width of fabrics, pile or napped surface width, or both. The method is applicable to full rolls, bolts of fabric, and short specimens removed from a roll or bolt. Unless otherwise specified, measurements shall include the selvages when present. 1.2 The method offers two options: 1.2.1 Option A—Full Roll or Bolt. 1.2.2 Option B—Short Specimen Removed from Full Roll or Bolt. 1.3 The values stated in either SI units or U.S. customary units are to be regarded as standard. The U.S. customary units may be approximate. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||||
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