ASTM D – Tensile Properties of Yarns by the Single Strand Method. Scope: This test is used to determine the Breaking Force and Elongation of yarns. This standard is issued under the fixed designation D ; the number 1 This test method is under the jurisdiction of ASTM Committee D13 on Textiles. ASTM D is by far the most common specification that is followed for determining the breaking strength, elongation, and energy of single strand textiles.
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Pneumatic cord and yarn grips provide selectable clamping force to accommodate different materials and excellent follow-up action which compensates for decay of the holding force due to specimen creep.
It provides an indication of the likely stretch behavior of garment areas such as knees, elbows, or ast points of stress. Check this box to receive pertinent commercial email from Instron focusing on products, upcoming events, and more!
The test dat can be used to calculate breaking tenacity, initial modulus, chord modulus, and breaking toughness.
Concrete, Asphalt and Rock. To determine tensile strength and elongation at break, specimens are clamped in the appropriate grips and pulled at a constant rate until failure occurs. Historical Version s – view previous versions of standard. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator.
Specimen clamping may be modified as required at the discretion of the individual laboratory providing a representative force-elongation curve is obtained. Initial modulus is a measure of the resistance of the yarn to extension at forces below the yield point. To prevent slippage in the clamps or damage as a result of being gripped in the clamps, special clamping adaptations may be necessary with high modulus yarns made from fibers such as glass or extended chain polyolefin.
Special methods for testing yarns made from specific fibers; namely, glass, flax, hemp, ramie, and kraft paper and for specific products; namely, tire cords and rope, have been published: The skein-breaking force is always lower than the sum of the breaking forces of the same number of ends broken individually. Description Literature Contact Us This standard specifies the method for determining the tensile properties of yarns using the single-strand method, and helps determine the quality of the raw material while aiding in quality control of the finished product.
D22556 test results can be used to determine the tenacitymodulusand strength of the material. Have a question about conducting the test for this standard? Test Methods D d225, and Specification D For directions covering the determination of breaking force of yarn by the skein method refer to Test Method D Contact Us View Accessories Catalog. These alternative rates may be used only by agreement between the parties concerned or when required in an applicable material specification.
Email addresses can only contain letters, numbers and the following special characters: However, this statement is not applicable to knot and loop breaking force tests, tests on wet specimens, tests on oven-dried specimens, or tests on specimens exposed to low or high temperatures and should be used with caution for acceptance wstm because factual information on between-laboratory precision and bias is not available. ASTM D D determines the asttm properties of monofilament, multifilament, and spun yarns, either single, plied, or cabled with the exception of yarns that stretch more than 5.
Low-temperature tests are made on coated yarns used in the manufacture of materials used in outdoor applications, such as screening fabrics.
ASTM D Tensile Properties of Yarns by Single Strand Method – Instron
Most yarns can be tested by this test method some modification of clamping techniques may be necessary for a given yarn depending upon its structure and composition. Glossary of Materials Testing D2526. Bluehill LE for Basic Testing. This standard specifies the method for determining the tensile properties of yarns using the single-strand method, and helps determine the quality of the raw material while aiding in quality control of the finished product.
ASTM D – 02 Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
As a minimum, use f2256 samples for such a 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. Subscribe to Our Newsletters.
We are confident that we have wstm you are looking for. Some modification of clamping techniques may be necessary for a given yarn depending upon its structure and composition.
Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. In any event, the asrm described in this test method for obtaining tensile properties must be maintained.
ASTM D2256 Tensile Yarns Testing Equipment
Reporting calculations in compliance with the standard Specimen gripping Instron’s Solution: Software for Series Systems. Load ratings from 1 kN to 20 kN lbf to 4, lbf Great option for strapping, fabric strips, or similar specimens Designed to resist specimen rupture at grip interface Accomodates various specimen thicknesses and widths.
Note that results obtained when testing oven-dried specimens at standard temperature will not necessarily agree with the results obtained when testing oven-dried yarns at high temperatures. Please confirm that you agree with our privacy aatm cookies policy to submit this form. The agreement is not necessarily good, however, between CRE or CRT tension testing machines on the one hand and CRL tension testing machines on the other even when they are all operated at the same time-to-break.
Wet tests are made on flax yarns to detect adulteration by failure to show a gain in breaking force. Elongation in knot or loop tests is not known to have any significance and is not usually reported. Subscribe to Instron News!
ASTM D2256 Tensile Properties of Yarns
The challenges of testing to this standard are: Astk addresses must contain the symbol. Link to Active This link will always route to the current Active version of the standard.
Next Checking to see if you are a returning visitor…. Onsite Aatm At Your Facility. This allows hands-free grip operation enabling the specimen to be held with both hands, for easy loading.