ASTM D5034-09(2017) Standard Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test).pdf
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1、Designation: D5034 09 (Reapproved 2017)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
2、, 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 of Defense.1. Scope1.1 This test method c
3、overs 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 primaril
4、y 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 %).NOTE 1For the determination of the breaking force and elongation oftextile fabrics using the raveled strip test procedure and the cut
5、 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 unitskno
6、wn 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
7、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, health and environmental practices and deter-mine the applicability of regulatory limitations prior to
8、use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarrier
9、s to Trade (TBT) Committee.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 20
10、10)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 Fabr
11、ics 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 tes
12、ting 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 Terminolo
13、gy D4850.3.4 For all other textile terms used in this test method, referto Terminology D123.1This test method is under the jurisdiction of ASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.60 on Fabric Test Methods,Specific.Current edition approved July 15, 2017. Pub
14、lished August 2017. Replaces GrabTesting sections of Test Method D1682 90. Originally approved in 1990. Lastprevious edition approved in 2013 as D503409(2013). DOI: 10.1520/D5034-09R17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceast
15、m.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 1942
16、8-2959. 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, Guides and Recommendations issued by the World Trade Organization Techni
17、cal Barriers to Trade (TBT) Committee.14. Summary of Test Method4.1 A 100-mm (4.0-in.) wide specimen is mounted centrallyin clamps of a tensile testing machine and a force applied untilthe specimen breaks. Values for the breaking force and theelongation of the test specimen are obtained from machine
18、scales, 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 identificatio
19、n 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 c
20、an be identified as follows:Test SpecimenType of TesterConstant-Rate-of-ExtensionConstant-Rate-of-LoadConstant-Rate-of-TraverseGrab G-E G-L G-TModified Grab MG-E MG-L MG-TFor example, Test Method D5034, G-E refers to a grab test carried out on aconstant rate-of-extension tensile testing machine.5. S
21、ignificance and Use5.1 The grab test procedure in this test method for thedetermination of breaking force and elongation is consideredsatisfactory for acceptance testing of commercial shipments ofmost woven or nonwoven textile fabrics, and the modified grabtest procedure is considered satisfactory f
22、or acceptance testingof commercial shipments of most woven textile fabrics, sincethe procedures have been used extensively in the trade foracceptance testing.5.1.1 In case of disagreement arising from differences inreported test values when using this test method for acceptancetesting of commercial
23、shipments, the purchaser and the sup-plier should conduct comparative tests to determine if there isa statistical bias between their laboratories. Competent statis-tical assistance is recommended for the investigation of bias.As a minimum, the two parties should take a group of testspecimens which a
24、re as homogeneous as possible and whichare from a lot of material of the type in question. The testspecimens should then be randomly assigned in equal numbersto each laboratory for testing. The average results from the twolaboratories should be compared using Students t-test forunpaired data and an
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