ASTM International ASTM D Tearing Strength of Fabric by . ASTM International. D Breaking Strength/Elongation Grab Method. ASTM D is a testing standard for determining the breaking strength and elongation of woven, non-woven, and felted fabrics and textiles. ASTM D is a popular testing standard for those needing to determine the breaking strength and elongation of fabrics and textiles.

Historical Version s – view previous versions of standard. Work Item s – proposed revisions of this standard.

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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.

ASTM D Breaking Strength and Elongation of Textile Fabrics Grab Test – Instron

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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 light of the known bias.

Special precautionary measures are provided for use when necessary for strong fabrics. Even then the aatm may differ significantly.

The breaking force determined by the grab procedure is not a reflection of the strength of the yarns actually gripped between clamps and cannot be used for direct comparison with yarn strength determinations.

Grab test specimens require much less time to prepare although they require more fabric per specimen. There is no simple relationship between grab tests and strip tests since the amount of fabric assistance depends on the type of fabric and construction variables.

This test method is particularly applicable to high-strength fabrics. Provisions are made for wet testing. For the determination of the breaking force and elongation of textile fabrics using the raveled strip test procedure and the cut strip test procedure, refer to Test Method D Inch-pound units is the technically correct name for the customary units asfm in the United States.

SI units is the technically correct name for the system of metric units known as the International System of Units. The values stated in either acceptable metric units or in other units shall be regarded separately as standard.

ASTM D5034 Textile Strength and Elongation Grab Test

The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining in any way. It adtm 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.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Link to Active This link will always route to the current Active version of the standard.

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