ASTM D is a testing standard for those needing to test fabrics made from Acetate, Acrylic, Cotton, Flax, Nylon, Olefin, Polyester, Rayon, Silk, or Wool. ASTM D Tear strength of fabrics test to determine the resistance to the formation of pills and other related surface changes of textile fabrics using Tongue. Designation: D – 96 (Reapproved ) Standard Test Method for Tearing Strength of Fabrics by the Tongue (Single Rip) Procedure.
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There were sufficient differences related to the fabric type and structure to warrant listing 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 with consideration to the known bias. As a consequence, these test instruments may be used when agreed upon between the purchaser and the supplier. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
As a minimum, the two parties should take a group of test specimens that asmt as homogeneous as possible and that are from a lot of fabric of the type in question. A superscript epsilon e indicates an editorial change since the last revision or reapproval. It is recognized that some constant-rate-of-traverse-type CRT tensile testing machines continue to be used.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Subscribe to Instron News!
Tear Strength of Fabrics – Tongue Tear (Single Rip)
To consistently and accurately measure the tear strength of your material, it is important to remember that the data sampling rate has to asrm high enough that the test peaks and troughs are captured. The fabrics may be untreated, heavily sized, coated, resin-treated, or otherwise treated.
Concrete, Asphalt and Rock.
Please confirm that you agree with our privacy and cookies policy to submit this form. The components of variance for tongue tear strength expressed as standard deviations were calculated to be the values listed in Table 3.
The inch-pound units may be approximate. There may be no overall correlation, however, between the results obtained with the CRT-type machine and the CRE-type machine. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator.
Sampling and Test Specimens 7. In any event, it is recommended that computer-processed data be veri? Email addresses must contain the symbol. As the test is run, the jaws move apart and the fabric tears along the pre-cut segment.
Discover simpler and smarter testing with features such as pre-loaded test methods, QuickTest in seconds, enhanced data exporting: Test specimens then should be randomly assigned in equal numbers to each laboratory for testing.
The square roots of the components of variance are being reported to express the variability in the appropriate units of measure rather than as the squares of those units of measure. Some modification of clamping techniques may be necessary for a given fabric due to its structure.
ASTM D2261 Tearing Strength of Fabrics
The highest peaks appear to re? Strong fabrics or fabrics made from glass? Strong fabrics or fabrics made from glass fibers usually require special adaptation to prevent them from slipping in the clamps or being damaged as a result of being gripped in the clamps.
Next Checking to see if you are a returning visitor…. B Refer to Bluehill Universal Brochure Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. The tearing force may increase to a simple maximum value, or may show several maxima and minima, as shown in Fig. c2261
This test method allows the use asgm the CRT-type tensile machine when agreed upon between the purchaser and the supplier. The highest peaks appear to reflect the strength of the yarn components, fiber bonds, or fiber interlocks, individually or in combination, needed to stop a tear in a fabric of the same construction.
Consequently, these test instruments may be used when agreed upon between the purchaser and the supplier. This precaution is most important when testing bowed fabrics. Four of the eight specimens were tested on one day, and four specimens were tested on a second day.
Stop the crosshead motion after a total ast, of approximately 75 mm 3 in.
ASTM D Tear Strength of Fabrics – Tongue Tear (Single Rip)
If more than 2 min elapse between taking the wet specimen from the water bath and starting the tensile testing machine, discard the specimen and take another. No known procedure is available that can be used with all fabrics to determine the minimum tearing strength.
Asgm the cutting die or template described in 6. At the same time, the force developed is recorded.