ASTM_D_5034_-_09_2013.pdf

Designation:D503409(Reapproved 2013)Standard Test Method forBreaking Strength and Elongation of Textile Fabrics(GrabTest)1This standard is issued under the fixed designation D5034;the number immediately following the designation indicates the year 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 Department of Defense.1.Scope1.1 This test method covers the grab and modified grab testprocedures for determining the breaking strength and elonga-tion of most textile fabrics.Provisions are made for wet testing.1.1.1 The grab test procedure is applicable to woven,nonwoven,and felted fabrics,while the modified grab testprocedure is used primarily for woven fabrics.1.2 This test method is not recommended for glass fabrics,or for knitted fabrics and other textile fabrics which have highstretch(more than 11%).NOTE1For the determination of the breaking force and elongation oftextile fabrics using the raveled strip test procedure and the cut strip testprocedure,refer to Test Method D5035.1.3 This test method provides the values in both inch-poundunits and SI units.Inch-pound units is the technically correctname for the customary units used in the United States.SI unitsis the technically correct name for the system of metric unitsknown as the International System of Units.The values statedin either acceptable metric units or in other units shall beregarded separately as standard.The values stated in eachsystem may not be exact equivalents;therefore,each systemmust be used independently of the other,without combining inany way.1.4 This standard does not purport to address all of thesafety concerns,if any,associated 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.2.Referenced Documents2.1 ASTM Standards:2D76 Specification for Tensile Testing Machines for TextilesD123 Terminology Relating to TextilesD629 Test Methods for Quantitative Analysis of TextilesD1059 Test Method for Yarn Number Based on Short-Length Specimens(Withdrawn 2010)3D1776 Practice for Conditioning and Testing TextilesD5035 Test Method for Breaking Force and Elongation ofTextile Fabrics(Strip Method)D4848 Terminology Related to Force,Deformation andRelated Properties of TextilesD4849 Terminology Related to Yarns and FibersD4850 Terminology Relating to Fabrics and Fabric TestMethods3.Terminology3.1 For definition of textile terms used in this test method:breaking force,breaking load,elongation,extension,tensiletest,refer to Terminology D4848.3.2 For definitions of textile terms used in this test method:constant-rate-of-extension(CRE tensile testing machine,constant-rate-of-load(CRL)tensile testing machine,constant-rate-of-traverse(CRT)tensile testing machine,refer to Termi-nology D4849.3.3 For definitions of textile terms used in this test method:grab test in fabric testing,and modified grab test in fabrictesting refer to Terminology D4850.3.4 For all other textile terms used in this test method,referto Terminology D123.4.Summary of Test Method4.1 A100-mm(4.0-in.)wide specimen is mounted centrallyin clamps of a tensile testing machine and a force applied until1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.60 on Fabric Test Methods,Specific.Current edition approved July 1,2013.Published September 2013.ReplacesGrab Testing sections of Test Method D1682 90.Originally approved in 1990.Last previous edition approved in 2009 as D503409.DOI:10.1520/D5034-09R13.2For referenced ASTM standards,visit 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 International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the specimen breaks.Values for the breaking force and theelongation of the test specimen are obtained from machinescales,dials,autographic recording charts,or a computerinterfaced with the testing machine.4.2 This test method describes procedures for carrying outfabric grab tensile tests using two types of specimens and threealternative types of testing machines.For reporting,use thefollowing identification system of specific specimen and ma-chine combinations.4.2.1 Type of specimen:4.2.1.1 GGrab4.2.1.2 MGModified grab4.2.2 Type of tensile testing machine:4.2.2.1 EConstant-rate-of-extension(CRE)4.2.2.2 LConstant-rate-of-load(CRL)4.2.2.3 TConstant-rate-of-traverse(CRT)4.2.3 Possible combinations can be identified as follows:Test SpecimenT