ASTM D2261-96(2002)
(Test Method)Standard Test Method for Tearing Strength of Fabrics by the Tongue (Single Rip) Procedure (Constant-Rate-of-Extension Tensile Testing Machine)
Standard Test Method for Tearing Strength of Fabrics by the Tongue (Single Rip) Procedure (Constant-Rate-of-Extension Tensile Testing Machine)
SCOPE
1.1 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.
1.1.1 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-traverse-type (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 .
1.2 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.
1.3 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.
1.4 Two calculations for tongue tearing strength are provided: the single-peak force and the average of five highest peak forces.
1.5 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.
1.6 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.
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Designation:D2261–96 (Reapproved 2002)
Standard Test Method for
Tearing Strength of Fabrics by the Tongue (Single Rip)
Procedure (Constant-Rate-of-Extension Tensile Testing
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Machine)
This standard is issued under the fixed designation D 2261; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 This test method covers the measurement of the tearing 2.1 ASTM Standards:
strength of textile fabrics by the tongue (single rip) procedure D76 Specification for Tensile Testing Machines for Tex-
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using a recording constant-rate-of-extension-type (CRE) ten- tiles
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sile testing machine. D 123 Terminology Relating to Textiles
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1.1.1 The CRE-type tensile testing machine has become the D 629 Test Methods for Quantitative Analysis of Textiles
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preferred test apparatus for determining tongue tearing D 1776 Practice for Conditioning Textiles for Testing
strength. It is recognized that some constant-rate-of-traverse- D 2904 Practice for Interlaboratory Testing of a Textile Test
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type (CRT) tensile testing machines continue to be used. As a Method That Produces Normally Distributed Data
consequence, these test instruments may be used when agreed D 2906 Practice for Statements on Precision and Bias for
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upon between the purchaser and the supplier. The conditions Textiles
for use of the CRT-type tensile tester are included inAppendix D 4848 Terminology of Force, Deformation and Related
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X1. Properties of Textiles
1.2 This test method applies to most fabrics including 2.2 ASTM Adjuncts:
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woven fabrics, air bag fabrics, blankets, napped fabrics, knit TEX-PAC
fabrics, layered fabrics, pile fabrics. The fabrics may be
3. Terminology
untreated, heavily sized, coated, resin-treated, or otherwise
treated. Instructions are provided for testing specimens with or 3.1 Definitions—For definitions of other textile terms used
without wetting. in this test method, refer toTerminology D 123. For definitions
of other terms related to force and deformation in textiles, refer
1.3 Tear strength, as measured in this test method, requires
that the tear be initiated before testing. The reported value to Terminology D 4848.
3.2 Definitions of Terms Specific to This Standard:
obtained is not directly related to the force required to initiate
or start a tear. 3.2.1 cross-machine direction, CD, n—the direction in the
plane of the fabric perpendicular to the direction of manufac-
1.4 Two calculations for tongue tearing strength are pro-
vided: the single-peak force and the average of five highest ture.
3.2.1.1 Discussion—This term is used to refer to the direc-
peak forces.
1.5 The values stated in either SI units or inch-pound units tion analogous to crosswise or filling direction in woven
fabrics.
are to be regarded as the standard. The inch-pound units may
be approximate. 3.2.2 fabric, in textiles, n—a planar structure consisting of
yarns or fibers.
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.2.3 machine direction, MD, n—the direction in the plane
of the fabric parallel to the direction of manufacture.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 3.2.3.1 Discussion—This term is used to refer to the direc-
tion analogous to lengthwise or warp direction in woven
bility of regulatory limitations prior to use.
fabrics.
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This test method is under the jurisdiction ofASTM Committee D13 onTextiles
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and is the direct responsibility of Subcommittee D13.60 on Fabric Test Methods, Annual Book of ASTM Standards, Vol 07.01.
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Specific.
Annual Book of ASTM Standards, Vol 07.02.
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Current edition approved Sept. 10, 2002. Published April 1996. Originally A PC program on floppy disk for analyzing Committee D-13 interlaboratory
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published as D 2261 – 64 T. Discontinued November 1995 and reinstated as data are available from ASTM Headquarters. For a 3 ⁄2-in. disk, request PCN:12-
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D 2261. 429040-18. For a 5 ⁄4-in. disk, request PCN:12-429041-18.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D2261–96 (2002)
3.2.4 peak force, in tear testing of fabrics, n—the maximum available that can be used with all fabrics to determine the
force required to break one or more yarn components in a minimum tearing strength.
woven or knitted fabric specimen, or break the fiber, the fiber 5.3 Depending on the nature of the specimen, the data
bonds, or fiber interlocks in
...
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