ASTM_D_3389_-_21.pdf

Designation:D338921Standard Test Method forCoated Fabrics Abrasion Resistance(Rotary PlatformAbrader)1This standard is issued under the fixed designation D3389;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.Scope*1.1 This test method covers the determination of the wearresistance of fabrics coated with rubber or plastics to abrasion.The abrasion is measured by mass loss or number of cyclesrequired to wear through the coating to initially expose the basefabric.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 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.1.4 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:2D1349 Practice for RubberStandard Conditions for Test-ingD1566 Terminology Relating to RubberE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodG195 Guide for Conducting Wear Tests Using a RotaryPlatform Abraser3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 abrader,na wear testing instrument,also referred toas a rotary platform tester or abraser.3.1.2 abrasion cycle,nin abrasion testing,one or moremovements of the abradant across a material surface,or thematerial surface across the abradant,that permits a return to itsstarting position.3.1.2.1 DiscussionIn the case of the rotary platform testmethod,it consists of one complete rotation of the specimen.3.1.3 resurface,vto refresh the abrading function of anabrasive wheel on a resurfacing disc or diamond tool wheelrefacer,prior to use or during testing.3.2 For definitions of other terms used in this test method,refer to Terminology D1566.4.Summary of Test Method4.1 Abrasion resistance of fabrics coated with rubber orplastics is measured by subjecting the specimen to the rotary-rubbing action of two abrasive wheels under controlled condi-tions of pressure by the use of the rotary platform abrader.Thetest specimen,mounted on a turntable platform,turns on avertical axis against the sliding rotation of two abradingwheels.One abrading wheel rubs the specimen outward towardthe periphery and the other,inward toward the center while avacuum system removes wear debris generated during the test.The resulting abrasion marks form a circular pattern of crossedarcs over an area of approximately 30 cm2.Resistance toabrasion is evaluated by average mass loss,wear index(average mass loss per revolution)or cycles required to wearthrough the coating to expose the yarn in the base fabric.5.Significance and Use5.1 Abrasion resistance tests are intended to measure thewear resistance properties of a material.This may be correlatedto expected end use performance.1This test method is under the jurisdiction of ASTM Committee D11 on Rubberand Rubber-like Materials and is the direct responsibility of Subcommittee D11.15on Degradation Tests.Current edition approved May 1,2021.Published May 2021.Originallyapproved in 1975.Last previous edition approved in 2016 as D3389 16.DOI:10.1520/D3389-21.2For 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.*A Summary of Changes section appears at the end of this standardCopyright 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.15.2 The resistance of coated fabrics to abrasion,as measuredon a testing machine in the laboratory,is generally only one ofseveral factors contributing to wear performance or durabilityas experienced in the actual use of the material.While abrasionresistance(often stated in terms of the number of abrasioncy