ASTM D5034 PDF

Previous Next ASTM D is a popular testing standard for those needing to determine the breaking strength and elongation of woven, nonwoven, and felted fabrics and textiles. This quick summary is intended to help you understand the basic grab test procedure and the equipment you need to perform this test with accuracy. Procedure: 1. Cut the fabric into a rectangular shape making sure the longer dimension is parallel to the direction you want to test machine or cross. Drawing a line along the long segment of the fabric will help you align the sample into the grips.

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ASTM D uses grab and modified grab testing procedures to measure the strength and elongation of textile fabric. The grab test determines the effective strength of the fabric: the strength of the yarns in a specified width with fabric assistance from the adjacent yarns. The modified grab test determines the breaking force of fabrics with constructions in which the application of tensile stress on ravel strip specimens produces further unraveling.

This process applies to high-strength fabrics. The modified grab test is similar - lateral slits are made mid-length of the textile, severing all yarns bordering that portion of the specimen held between the two clamps.

In the grab test, front grip faces should measure 1 inch by 1 or 2 inches, with the longer dimension along the vertical side.

The rear grip faces should be 2 inches wide. For the modified grab test the front grip face should measure 1 inch by 2 inches, with the longer dimension along the vertical side once again. Make sure you choose the correct grips for the job, with either rubber coated or smooth surfaces. We have determined that for denim material it is wise to use rubber coated jaws to avoid tearing at the upper corners of the jaws, which invalidates the test.

This denim material did not slip in rubber lined jaws. If you do encounter slippage in the jaws, section The control test should run at 12 inches per minute. By means of our testing expertise and modular product design, we will help find the testing solution that is right for you. Give one of our application engineers a call today for help with creating the best budget and testing plan according to ASTM D

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ASTM D5034 Textile Elongation and Breaking Strength Testing

ASTM D uses grab and modified grab testing procedures to measure the strength and elongation of textile fabric. The grab test determines the effective strength of the fabric: the strength of the yarns in a specified width with fabric assistance from the adjacent yarns. The modified grab test determines the breaking force of fabrics with constructions in which the application of tensile stress on ravel strip specimens produces further unraveling. This process applies to high-strength fabrics. The modified grab test is similar - lateral slits are made mid-length of the textile, severing all yarns bordering that portion of the specimen held between the two clamps. In the grab test, front grip faces should measure 1 inch by 1 or 2 inches, with the longer dimension along the vertical side. The rear grip faces should be 2 inches wide.

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ASTM D5034 Breaking Strength and Elongation of Textile Fabrics How to Guide

More D 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. 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.

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ASTM D5034 - Breaking Strength (Grab)

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