1.1 This test method covers the measurement of the tearing strength of textile fabrics by the trapezoid procedure using a recording constant-rate-of-extension-type (CRE) tensile testing machine.
1.1.1 The CRE-type tensile testing machine has become the preferred test apparatus for determining trapezoid tearing strength. It is recognized that some constant-rate-of-traversetype (CRT) tensile testing machines continue to be used. Consequently, these test instruments may be used when agreed upon between the purchaser and the supplier. The conditions for use of the CRT-type tensile tester are included in Appendix X1.
1.2 This test method applies to most fabrics including woven fabrics, air bag fabrics, blankets, napped fabrics, knitted fabrics, layered fabrics, pile, and nonwoven fabrics. The fabrics may be untreated, heavily sized, coated, resin-treated, or otherwise treated. Instructions are provided for testing specimens with or without wetting.
1.3 Tearing strength, as measured in this test method, requires that the tear be initiated before testing. The reported value obtained is not directly related to the force required to initiate or start a tear.
1.4 Two calculations for trapezoid tearing strength are provided: the single-peak force and the average of five highest peak forces.
1.5 The values stated in SI units are to be regarded as the standard. The values stated in inch-pound units may be approximate.
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D5587-15(2019) Referenced Document
ASTM D123 Standard Terminology Relating to Textiles*, 2023-09-14 Update
ASTM D1776 Standard Practice for Conditioning and Testing Textiles
ASTM D2904 Standard Practice for Interlaboratory Testing of a Textile Test Method that Produces Normally Distributed Data
ASTM D2906 Standard Practice for Statements on Precision and Bias for Textiles
ASTM D4850 Standard Terminology Relating to Fabrics and Fabric Test Methods*, 2023-09-14 Update
ASTM D629 Standard Test Methods for Quantitative Analysis of Textiles
ASTM D76 Standard Specification for Tensile Testing Machines for Textiles
ASTM D5587-15(2019) history
2024ASTM D5587-15(2024) Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2019ASTM D5587-15(2019) Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2015ASTM D5587-15 Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2014ASTM D5587-14 Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2008ASTM D5587-08 Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2007ASTM D5587-07ae1 Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2007ASTM D5587-07a Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2007ASTM D5587-07 Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2005ASTM D5587-05 Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
2003ASTM D5587-03 Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
1996ASTM D5587-96(2003) Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure
1996ASTM D5587-96 Standard Test Method for Tearing Strength of Fabrics by Trapezoid Procedure