ASTM_D_3389_-_15.pdf

Designation:D338915Standard 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD1566 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,vthe preparation of an abrasive wheel ona resurfacing disc or diamond tool wheel refacer,prior to use orduring 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.Theresulting abrasion marks form a circular pattern of crossed arcsover an area of approximately 30 cm2.Resistance to abrasionis evaluated by average mass loss,wear index(average massloss per revolution)or cycles required to wear through thecoating 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.5.2 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 abrasioncycles)and durability are frequently related,the relationshipvaries with different end uses and different factors may benecessary in any calculation of predicted durability fromspecific abrasion data.This test method provides a comparative1This test method is under the jurisdiction of ASTM Committee D11 on Rubberand is the direct responsibility of Subcommittee D11.15 on Degradation Tests.Current edition approved July 1,2015.Published September 2015.Originallyapproved in 1975.Last previous edition approved in 2010 as D3389 10.DOI:10.1520/D3389-15.2For 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 States1 ranking of material performance,which can be used as anindication of relative end-use performance.5.3 The resistance of coated fabrics to abrasion may beaffected by factors including test conditions,type of abradant,pressure between the specimen and abradant,mounting ortension of the specimen,and type,kind,or amount of finishingmaterials.5.4 The measurement of the relative amount of abrasionmay also be affected by the method of evaluation and may beinfluenced by the judgment of the operator.6.Apparatus6.1 Abrasion