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ASTM_D_3822_-_D_3822M_-_14_2020.pdf

1、Designation:D3822/D3822M14(Reapproved 2020)Standard Test Method forTensile Properties of Single Textile Fibers1This standard is issued under the fixed designation D3822/D3822M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year

2、of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the measurement of tensileproperties of natural and man-made single textile fibers ofsufficient

3、length to permit mounting test specimens in a tensiletesting machine.1.2 This test method is also applicable to continuous(fila-ment)and discontinuous(staple)fibers or filaments taken fromyarns or tow.When the fibers to be tested contain crimp,or ifthe tow or yarns have been subjected to bulking,cri

4、mping,ortexturing process,the tensile properties are determined afterremoval of the crimp.NOTE1Testing of filaments taken from yarns or tow,included in thistest method was originally covered in Test Method D2101,that isdiscontinued.1.3 The words“fiber”and“filament”are used interchange-ably throughou

5、t this test method.1.4 This test method is also applicable to fibers removedfrom yarns,or from yarns processed further into fabrics.Itshould be recognized that yarn and manufacturing processescan influence or modify the tensile properties of fibers.Consequently,tensile properties determined on fiber

6、s takenfrom yarns,or from yarns that have been processed intofabrics,may be different than for the same fibers prior to beingsubjected to yarn or fabric manufacturing processes.1.5 This test method provides directions for measuring thebreaking force and elongation at break of single textile fibersan

7、d for calculating breaking tenacity,initial modulus,chordmodulus,tangent modulus,tensile stress at specifiedelongation,and breaking toughness.1.6 Procedures for measuring the tensile properties of bothconditioned and wet single fibers are included.The test methodis applicable to testing under a wide

8、 range of conditions.1.7 As the length of the test specimen decreases,the tensilestrength is likely to increase,but the accuracy of the tensileproperties determined may decrease,which may require theneed to increase the number of test specimens.This isparticularly true for those properties dependent

9、 on the mea-surement of elongation,since the shorter lengths increase therelative effect of slippage and stretching of the test specimenswithin the jaws of either clamp.1.8 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach syst

10、em are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently of the other,and values from the twosystems shall not be combined.1.9 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It

11、 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 use.1.10 This international standard was developed in accor-dance with internationally recognized principles on s

12、tandard-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 Machines

13、 for TextilesD123 Terminology Relating to TextilesD629 Test Methods for Quantitative Analysis of TextilesD1577 Test Methods for Linear Density of Textile FibersD1776 Practice for Conditioning and Testing TextilesD2101 Test Method for Tensile Properties of Single Man-Made Textile Fibers Taken From Ya

14、rns and Tows(With-drawn 1995)3D2258 Practice for Sampling Yarn for TestingD3333 Practice for Sampling Manufactured Staple Fibers,Sliver,or Tow for TestingD4849 Terminology Related to Yarns and FibersE178 Practice for Dealing With Outlying Observations1This test method is under the jurisdiction ofAST

15、M Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.58 on Yarns and Fibers.Current edition approved Feb.1,2020.Published February 2020.Originallyapproved in 1979.Last previous edition approved in 2014 as D3822 14.DOI:10.1520/D3822_D3822M-14R20.2For referenced ASTM standar

16、ds,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 StatesThis international standard was developed in accordance with internationally recognized principles on

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