1、Designation:D226113(Reapproved 2017)Standard Test Method forTearing Strength of Fabrics by the Tongue(Single Rip)Procedure(Constant-Rate-of-Extension Tensile TestingMachine)1This standard is issued under the fixed designation D2261;the number immediately following the designation indicates the year
2、oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department o
3、f Defense.1.Scope1.1 This test method covers the measurement of the tearingstrength of textile fabrics by the tongue(single rip)procedureusing a recording constant-rate-of-extension-type(CRE)ten-sile testing machine.1.1.1 The CRE-type tensile testing machine has become thepreferred test apparatus fo
4、r determining tongue tearingstrength.It is recognized that some constant-rate-of-traverse-type(CRT)tensile testing machines continue to be used.As aconsequence,these test instruments may be used when agreedupon between the purchaser and the supplier.The conditionsfor use of the CRT-type tensile test
5、er are included in AppendixX1.1.2 This test method applies to most fabrics includingwoven fabrics,air bag fabrics,blankets,napped fabrics,knitfabrics,layered fabrics,pile fabrics and non-wovens.Thefabrics may be untreated,heavily sized,coated,resin-treated,or otherwise treated.Instructions are provi
6、ded for testingspecimens with or without wetting.1.3 Tear strength,as measured in this test method,requiresthat the tear be initiated before testing.The reported valueobtained is not directly related to the force required to initiateor start a tear.1.4 Two calculations for tongue tearing strength ar
7、e pro-vided:the single-peak force and the average of five highestpeak forces.1.5 The values stated in either SI units or inch-pound unitsare to be regarded as the standard.The inch-pound units maybe approximate.1.6 This standard does not purport to address all of thesafety concerns,if any,associated
8、 with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on
9、standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D76 Specification for Tensile Testing Machine
10、s for TextilesD123 Terminology Relating to TextilesD629 Test Methods for Quantitative Analysis of TextilesD1776 Practice for Conditioning and Testing TextilesD2904 Practice for Interlaboratory Testing of a Textile TestMethod that Produces Normally Distributed Data(With-drawn 2008)3D2906 Practice for
11、 Statements on Precision and Bias forTextiles(Withdrawn 2008)3D4848 Terminology Related to Force,Deformation andRelated Properties of TextilesD4850 Terminology Relating to Fabrics and Fabric TestMethods3.Terminology3.1 For all terminology relating to D13.60,Fabric TestMethods,Specific,refer to Termi
12、nology D4850.3.2 For all terminology related to Force,Deformation andRelated Properties of Textiles,refer to Terminology D4848.3.2.1 The following terms are relevant to this standard:cross-machine direction,CD,fabric,machine direction,MD,1This test method is under the jurisdiction ofASTM Committee D
13、13 on Textilesand is the direct responsibility of Subcommittee D13.60 on Fabric Test Methods,Specific.Current edition approved July 15,2017.Published August 2017.Originallyapproved in 1964.Last previous edition approved in 2013 as D226113.DOI:10.1520/D2261-13R17.2For referenced ASTM standards,visit
14、the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM Inte
15、rnational,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guide
16、s and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 peak force,in tear testing of fabrics,tearing force,in fabric,tearing strength,in fabric.3.3 For all other terminology related to textiles,refer toTerminology D123.4.Summary of Test Method4.1 Arectangular specimen,cut in the center of a short edgeto form a two-tongued(trouser shaped)specimen,in which onetongue of the specimen is gripped in the upper jaw and theother tongue is gripped in the l
