ASTM_D_3774_-_18.pdf

Designation:D377418Standard Test Method forWidth of Textile Fabric1This standard is issued under the fixed designation D3774;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 U.S.Department of Defense.1.Scope1.1 This test method covers the measurement of the width ofwoven or knitted fabrics,usable width,or both.The method isapplicable to full rolls,bolts of fabric,and short specimensremoved from a roll or bolt.Unless otherwise specified,measurements shall include the selvages when present.1.2 The method offers two options:1.2.1 Option AFull Roll or Bolt.1.2.2 Option BShort Specimen Removed from Full Rollor Bolt.1.3 The values stated in either SI units or U.S.customaryunits are to be regarded as standard.The U.S.customary unitsmay be approximate.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 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 TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD1776 Practice for Conditioning and Testing TextilesD4850 Terminology Relating to Fabrics and Fabric TestMethods2.2 Other Standard:ANSI/ASQC Z1.4Inspection by Attributes33.Terminology3.1 The following terms are relevant to this standard:raised-surface width;usable width;width of a circular-knittedfabric,when measured as a tubular structure;width of acircular-knitted fabric,when tubular structure has been slit;width,of a fabric;width,of a fabric woven on a shuttlelessloom.3.2 For terminology related to Fabric Test Methods,seeTerminology D4850.3.3 For definitions of all other textile terms see TerminologyD123.4.Summary of Test Method4.1 The width of the fabric is measured directly by using ametal rule.4.2 Option A offers two procedures for the measurement offabric width in full rolls or bolts.Raised(pile or napped)surface width or usable width may be measured in addition to,or in place of,the full width.The first procedure is atension-free method;the second procedure provides for mea-surements made during finishing or inspection operations thatmay impart tension to the fabric.4.3 Option B covers the measurement of fabric width whenonly a short length of fabric is available.Raised(pile ornapped)surface width or usable width may be measured inaddition to,or in place of,the full width.5.Significance and Use5.1 Option A procedures of Test Method D3774 for widthare considered satisfactory for acceptance testing of commer-cial shipments because they are used extensively in the trade.5.1.1 In case of a dispute arising from differences inreported test values when using Test Method D3774 foracceptance testing of commercial shipments,the purchaser andthe supplier should conduct comparative tests to determine if1This 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 1,2018.Published July 2018.Replaces Sections13 to 17 of Methods D1910 89,Test for Construction Characteristics of WovenFabrics.Originally approved in 1996.Last previous edition approved in 2016 asD377496(2016).DOI:10.1520/D3774-18.2For 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.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.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 standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 there is a statistical bias between their laboratories.Competentstatistical assistance is recommended for the investigation ofbias.As a minimum,the two parties should take a group of testspecimens which are as homogeneous as possible and whichare from a lot of material of the type in question.The testspecimens shou