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ASTM D 2261 REV A Document Information:
Title
Standard Test Method for Tearing Strength of Fabrics by the Tongue (Single Rip) Procedure (Constant-Rate-of-Extension Tensile Testing Machine)
ASTM International
Publication Date:
Dec 1, 2007
Scope:
This test method covers the measurement of the tearing strength
of textile fabrics by the tongue (single rip) procedure using a
recording constant-rate-of-extension-type (CRE) tensile testing
machine.
The CRE-type tensile testing machine has become the preferred
test apparatus for determining tongue tearing strength. It is
recognized that some constant-rate-of-traversetype (CRT) tensile
testing machines continue to be used. As a consequence, these test
instruments may be used when agreed upon between the purchaser and
the supplier. The conditions for use of the CRT-type tensile tester
are included in Appendix X1.
This test method applies to most fabrics including woven
fabrics, air bag fabrics, blankets, napped fabrics, knit fabrics,
layered fabrics, pile fabrics. The fabrics may be untreated,
heavily sized, coated, resin-treated, or otherwise treated.
Instructions are provided for testing specimens with or without
wetting.
Tear strength, as measured in this test method, requires that
the tear be initiated before testing. The reported value obtained
is not directly related to the force required to initiate or start
a tear.
Two calculations for tongue tearing strength are provided: the
single-peak force and the average of five highest peak forces.
The values stated in either SI units or inch-pound units are to
be regarded as the standard. The inch-pound units may be
approximate.
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
Keywords:
- fabric
- strength
- tearing tongue
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