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Significance and Use
5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use samples for such comparative tests that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing, and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.
5.2 Elongation is an indication of the ability of a fiber to absorb energy. The elongation of textile materials must be great enough to withstand strains experienced in processing and end use, and to absorb the energies of applied forces repeatedly.
1.3 The values stated in either SI units or U.S. Customary units are to be regarded separately as standard. Within the text, the U.S. Customary units are given in parentheses. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D76 Specification for Tensile Testing Machines for Textiles
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles
D4848 Terminology Related to Force, Deformation and Related Properties of Textiles
D4850 Terminology Relating to Fabrics and Fabric Test Methods
ICS Number Code 59.080.30 (Textile fabrics)
UNSPSC Code 11162125(Webbing fabrics)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D6775-13, Standard Test Method for Breaking Strength and Elongation of Textile Webbing, Tape and Braided Material, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top