1、Designation: F2838 10F2838 17Standard Practice forAccelerated Laboratory Aging of Radial Passenger Car andLight Truck Tires through Load Range E for the LaboratoryGeneration of Belt Separation1This standard is issued under the fixed designation F2838; the number immediately following the designation
2、 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.1. Scope1.1 This practice describes a method to l
3、aboratory age a new tire in an oven to produce changes in certain chemical and physicalproperties at the belt edges similar to those of tires in-service (see Appendix X1).1.2 This practice is a precursor to conducting an ASTM standard roadwheel test method for laboratory generation of beltseparation
4、 in radial passenger car and light truck tires.1.3 This practice may not produce representative chemical and physical property changes in any part of the tire except the beltedge.1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information
5、 only.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitat
6、ions prior to use. For specific precautionary statements, see Section 8.1.6 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recomm
7、endations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2ASTM SI10 - 02 IEEE/ASTM SI 10 American National Standard for Use of the International System of Units (SI): The ModernMetric SystemF538 Terminology Relating to the
8、Characteristics and Performance of TiresG128 Guide for Control of Hazards and Risks in Oxygen Enriched Systems2.2 Other Standards:ANSI/ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories3Compressed Gas Association (CGA) Standard for Valve Connections V-14EIG
9、A IGA 04/09/E Fire Hazards of Oxygen and Oxygen Enriched AtmospheresRMAVolume 4 Tire Service ManualU.S. Tire Manufacturers Association Demounting and Mounting Procedures for Passengerand Light Truck Tires Wall Chart5Tire and Rim Association (T belt separation; durability; endurance; oven; oven aging
10、; oxygen-nitrogen gas mixture;roadwheel; tire; tire oven agingANNEX(Mandatory Information)A1. TIRE OVEN AGING DATA LOGA1.1 See Table A1.1.TABLE 2 Storage ConditionsNOTE 1Do not exceed tire sidewall maximum pressure.Storage InflationPassenger Tires 140 kPa (20 psi)Light Truck Tires 240 kPa (35 psi)F2
11、838 175APPENDIXES(Nonmandatory Information)X1. NHTSA PHOENIX TIRE AGING STUDYX1.1 Tire material properties were obtained from data generated in the NHTSA Phoenix Tire Aging Study, Phase 1. For the tiretypes studied by ASTM in the ASTM program, the available NHTSA Phoenix Tire Aging Study material pr
12、operty data was used,which consisted exclusively of data collected from tires in on-road positions.X2. BACKGROUNDX2.1 The United States Congress passed the Transportation Recall Enhancement, Accountability and Documentation (TREAD)Act in November 2000. Included in the Act were specific directions to
13、 the National Highway Traffic Safety Administration(NHTSA) to upgrade tire safety standards.X2.2 As tire wear life has increased over the years, interest in the aging of a tires internal components has increased. “somemembers of Congress expressed the view that there is a need for an aging test to b
14、e conducted on light vehicle tires. The agencytentatively concludes that we agree there is a need for an aging test in the proposed light vehicle tire standard because most tirefailures occur at mileages well beyond 2,720 kilometers (1,700 miles) to which tires are exposed in the current FMVSS No. 1
15、09Endurance Test.” The ASTM F09.30 Subcommittees goal was to develop a scientifically valid, short duration aged tire durabilitytest standard, which correlates to in-service aging. Short duration is defined as the minimum duration test possible which correlatesto the aged state and mechanisms drivin
16、g this state. The scope of this work is limited to radial passenger car and light truck tiresthrough Load Range E. This standards development subcommittee conducted research in order to determine appropriateaccelerated laboratory aging conditions which correlate material property changes produced in
17、 the laboratory with those observedin service.TheASTM Subcommittee defined multiple research steps to follow in the development of the test standard.The researchwas developed to evaluate means to conduct accelerated laboratory aging of tires and considered both statically aging tires in anoven as we
18、ll as dynamically aging tires on a roadwheel. The conclusion of the research was that tires should be statically agedin an oven within a specified range of times and temperatures.TABLE A1.1 Tire Oven Aging Data LogOven TemperatureSet PointOven Number/IDSpecified Cold InflationPressureHot Inflation P
19、ressureSettingTire IDTemperature Monitor IDDate Time Technician ID MeasuredOvenTemperatureMeasured InflationPressure as Found(60 to 80 min afterremoval from oven)APressure AdjustedToStart4 to 8 h1 week3 weeks5 weeks7 weeksObservations/CommentsA After one, three, and five weeks of laboratory oven agi
20、ng. Upon test completion wait 3 h for complete cool down.F2838 176RELATED MATERIALSatterfield, J., “Overview of Aged Tire Durability Standard Development,” SAE Session Code: AC4 Presentation No. 2008-01-1489, Apr. 14, 2008.McNutt, J., Waddell, W., and Kohler, J., “Development for an Aged Tire Durabi
21、lity Standard - Accelerated Laboratory Static Aging,” SAE Paper No.2008-01-1493.McNutt, J., Waddell, W., and Kohler, J., “Development for an Aged Tire Durability Standard - Accelerated Laboratory Dynamic Aging,” SAE PaperNo. 2008-01-0149.Waddell, W., Kohler, J., and McNutt, J., “Development for anAg
22、ed Tire Durability Standard - Determination of Time and Temperature Parameters forAccelerated Laboratory Static Aging,” SAE Paper No. 2008-01-1492.Kohler, J., McNutt, J., and Waddell, W., “Development for an Aged Tire Durability Standard - Reinflation Study for Accelerated Laboratory Aging,”SAE Pape
23、r No. 2008-01-1491.Stalnaker, D.O., Altman, R.G., Howland, D.L., and Popio, J.A., “Development for an Aged Tire Durability Standard - Stepped-up Load RoadwheelEvaluation,” SAE Paper No. 2008-01-150.Altman, G., Howland, D.L., Popio, J.A., and Stalnaker, D.O., “Development for an Aged Tire Durability
24、Standard - Rationale for Steady State DOE,”SAE Paper No. 2008-01-1495.Altman, G., Howland, D.L., Popio, J.A., and Stalnaker, D.O., “Development for an Aged Tire Durability Standard - Steady State DOE,” SAE PaperNo. 2008-01-1493.Altman, G., Howland, D.L., Popio, J.A., and Stalnaker, D.O., “Developmen
25、t of an Aged Tire Durability Standard - Comparison of Stepped-Up Loadand Steady State DOE Results,” SAE Paper No. 2008-01-1494.Docket NHTSA-2005-21276 - ASTM Technical Papers Phase 1 Close-out Report, Phase 2 Close-out Report, and Validation Phase Summary Report.Bridgestone United States Patent Numb
26、er 6,119,513 of September 19, 2000.Federal Register Vol. 67, No 43, Tuesday, March 5, 2002 page 10068, Paragraph 6, “Aging Effects.”ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard
27、 are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif n
28、ot revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which
29、you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,Unit
30、ed States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 177
