Coated fabrics and rubber products made from coated fabrics are important items of commerce, and adequate test methods must be available to ensure the quality of these products. These test methods provide for this testing capability. Scope 1. The values given in parentheses are for information only.
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Specification ASTM D includes test methods for covering a wide range of mechanical properties of coated fabrics. A coated fabric is a material that has at least one layer of a textile and one layer of a polymeric substance. Examples would be tarps, outdoor clothing, and rain wear.
Some of these tests require specialized equipment hydrostatic resistance, blocking, wicking, impact, etc. These tests include:. Of course, not all of these are needed if you are only doing a certain test within this specification. Forgot your password? Work with us to find the right equipment for your ASTM standard. Summary of Test. Straining mechanism Clamps for holding specimens Load and elongation recording mechanisms. ADMET universal testing machines include the straining mechanism item 1 and built in load and elongation recording mechanisms Item 3.
This is a short list of the grips and fixtures required for each of these tests:. Elongation Test is done at the same time as the breaking strength test so grips are the same. Bursting Strength This fixture holds a piece of fabric securely on the top and bottom surface an exposed a circular area of fabric.
The other part of the fixture is a polished steel ball that is mounted to the top of the machine which is used to burst the fabric. Puncture Resistance This fixture is the same as used for the bursting test but the polished steel ball is replaced with a sharp pointed instrument. Tearing Strength — Procedure B: Tongue Tear Method Same vise grips used for the Breaking Strength test but replaced the 25mm x 25mm front jaws with 25mm tall x 50mm wide jaws so you have a set of four 25mm x 50mm jaws.
Trapezoidal Tear Same vise grips used for the Tearing Strength test Adhesion Coating to Fabrics Same vise grips but jaws should be 25mm tall x 75mm wide Tack-Tear Resistance This test requires a specialized grip fixture that is used only for this test. It is complicated, and the design can be seen in the specification. Seam Strength Same grips as described in Adhesion Coating to Fabrics test Dead Load Seam Strength Same vise grips as specified in the other tests Crush Resistance This test deflects the material over a button shaped compression platen until the material is crushed or cut.
This test requires a unique compression fixture, the exact dimensions of which can be found in the specification. Tack-tear fixture Crush resistance test fixture. Picture Gallery. Recommended Equipment. We are happy to help! Remember me Login. Sales Support Calibration Calculators. Vise grips with 25mm, 50mm, 75mm wide jaw faces Burst fixture with both round and sharp noses Tack-tear fixture Crush resistance test fixture.
ASTM D751 Coated Fabric Tensile Testing
Coated fabrics and rubber products made from coated fabrics are important items of commerce, and adequate test methods must be available to ensure the quality of these products. These test methods provide for this testing capability. These test methods cover, but are not limited to, rubber-coated fabrics, that is, tarpaulins, rainwear, and similar products. The scope of each of these test methods appears in the section in which the test method is described. The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.