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Significance and Use
5.1 This method is used to determine the stretch and growth properties which a garment made of the fabric may be expected to exhibit during use.
5.2 This is a new method and therefore the history of data is very small, however the excellent agreement of between-laboratory data suggest this method may be considered for acceptance testing of commercial shipments.
5.2.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative test should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, samples used for such comparative tests should be 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. Other fabrics with established test values may also be used for these comparative tests. 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 must be adjusted in consideration of the known bias.
1.1 This test method covers the determination of the amount of fabric stretch and fabric growth after a specified extension and held for a specified time.
1.2 While this test method can be used for any fabric, knit fabrics having high stretch are better measured by Test Method .
1.3 This test method should not be used to measure the breaking strength and elongation of woven fabrics, which is covered in Test Methods and .
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.5 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.
1.6 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D123 Terminology Relating to Textiles
D1776 Practice for Conditioning and Testing Textiles
D2594 Test Method for Stretch Properties of Knitted Fabrics Having Low Power
D4849 Terminology Related to Yarns and Fibers
D4850 Terminology Relating to Fabrics and Fabric Test Methods
D5034 Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test)
D5035 Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method)
ICS Number Code 59.080.30 (Textile fabrics)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D6614 / D6614M-20, Standard Test Method for Stretch Properties of Textile Fabrics – CRE Method, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top