ASTM_F_3015_-_13.pdf

Designation:F301513Standard Test Method forAccelerated Laboratory Roadwheel Generation of BeltSeparation in Radial Passenger Car and Light Truck Tiresthrough Load Range E1This standard is issued under the fixed designation F3015;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.INTRODUCTIONThe United States Congress passed the Transportation Recall Enhancement,Accountability andDocumentation(TREAD)Act in November 2000.Included in the Act were specific directions to theNational Highway Traffic Safety Administration(NHTSA)to upgrade tire safety standards.As tire wear life has increased over the years,interest in the in-service aging of a tires internalcomponents has increased.To quote NHTSA,“.some members of Congress expressed the view thatthere is a need for an aging test to be conducted on light vehicle tires.The agency tentatively concludesthat we agree there is a need for an aging test in the proposed light vehicle tire standard because mosttire failures occur at mileages well beyond 2,720 kilometers(1,700 miles)to which tires are exposedin the current FMVSS No.109 Endurance Test.”2Until the publication of this standard,there wasneither an industry nor a government standard practice for the accelerated laboratory roadwheelgeneration of belt separation in tires.This standard represents the body of work whose goal was to develop a scientifically valid,shortduration aged tire test standard focused on the generation of belt edge separation.The scope of thiswork is limited to radial passenger car and light truck tires through Load Range E.The standardsdevelopment task group conducted research in order to determine:(1)the appropriate acceleratedlaboratory aging conditions which correlate material property changes at the belt edge of the tire asproduced in the laboratory with those observed in service(as described in Practice F2838),and(2)theappropriate laboratory roadwheel durability test parameters which are capable of producing belt edgeseparations while avoiding those conditions which are exclusively by-products of roadwheel testing(as described in this standard).1.Scope1.1 This standard describes a laboratory method to evaluatetires for their tendency to develop belt edge separation,via theuse of a standard roadwheel(Practice F551/F551M).Thisevaluation is conducted on tires that have undergone acceler-ated laboratory aging as described in Practice F2838.1.2 The End-of-Test(EOT)conditions that can be producedby this method include target(belt-edge separation),non-target(conditions other than belt-related separations that can bedeveloped in passenger and light truck tires through on-roaduse),and non-representative(conditions that are typicallydeveloped only on laboratory roadwheels).There is also thepossibility that no visible EOT conditions may be generatedduring the course of this test.In this instance the user maychoose to select a designated completion time(DCT)as theEOT condition.1.3 The values stated in SI units are to be regarded as thestandard.The values given in the data log in Appendix X1 inparentheses are provided for information only.1This test method is under the jurisdiction of ASTM Committee F09 on Tiresand is the direct responsibility of Subcommittee F09.30 on Laboratory(Non-Vehicular)Testing.Current edition approved Nov.15,2013.Published January 2014.DOI:10.1520/F3015-13.2Federal Register Vol.67,No.43,Tuesday,March 5,2002,p.10068,Paragraph6,“Aging Effects.”Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 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 and health practices and determine the applica-bility of regulatory limitations prior to use.For specificprecautionary statements,see Section 6.2.Referenced Documents2.1 ASTM Standards:3F538 Terminology Relating to the Characteristics and Per-formance of TiresF551/F551M Practice for Using a 1.707-m 67.23-in.Di-ameter Laboratory Test Roadwheel in Testing TiresF2838 Practice for Accelerated Laboratory Aging of RadialPassenger Car and Light Truck Tires through Load RangeE for the Laboratory Generation of Belt Separation2.2 Other Standards:ANSI/ISO/IEC 17025 General requirements for the compe-tence of testing and calibration laboratories4European Tyre and Rim Technical Organisation(ETRTO)Standards Manual5ISO 4000 Passenger Car Tyres and Rims6Japan Automobile Tyre Manufacturers Association Inc.(JATMA)Year Book7Rubber Manufacturers Association(RMA):Volume 4:TireService Manual8Tire and Rim Association(TRA)Year Book93.Terminology3.1 Definitions:3.1.1 aging,acceleratedlaboratory(also:aging,laboratory),nincreased rate