1、AN AM E R IC AN NAT IO NAL STANDARD ASME B29.26-2013(Revision of ASME B29.26-2001)Fatigue Testing Power Transmission Roller ChainREAFFIRMED 2021ASME B29.26-2013(Revision of ASME B29.26-2001)Fatigue TestingPower TransmissionRoller ChainAN AMERICAN NATIONAL STANDARDTwo Park Avenue New York,NY 10016 US
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11、e American Society of Mechanical EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2013 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B29 Committee.vi1Scope.12Purpose.13Definitions and Nomenclatur
12、e.14References.15Testing Equipment.26Test Chains.27Test Loads.58Testing Procedures.59Analyzing Fatigue Testing Data.710Presentation of Test Results.8Figures1Typical Load Cycle.32Typical Single-Strand Roller Chain Fatigue Test Specimens andFixtures.33Typical Double-Strand Roller Chain Fatigue Test Sp
13、ecimens andFixtures.44Typical Leaf Chain Fatigue Test Specimens and Fixtures.45Typical Fatigue Test Fixtures for Endless Chain Tested on Sprockets orSheaves.56Johnson-Goodman Diagram.67Staircase Data Plot.88Typical Fatigue Test Data Plot.10Table1Required Number of Data Points.7Nonmandatory Appendice
14、sASurvival Method With Abridged Probit Analysis.11BAdditional“Phantom”Data Points.14CAdding One Step to the Minimum Fatigue Strength.15DAdjusting Laboratory Fatigue Strength for Applications.16iiiFOREWORDThe current horsepower ratings for precision power transmission roller chains,to ANSI B29.1,were
15、 first published in 1961.The low-speed portion of those ratings was derived from axialfatigue rating data provided by the member companies of the American Chain Association(then the ASCME).Each company determined a chains fatigue rating a different way,but thesedifferences were not critical because
16、the horsepower ratings were set at a very conservative level.In 1982,ISO began work on a motorcycle chain standard that included dynamic(fatigue)strength requirements.Furthermore,ISO decided that the development of these dynamic strengthrequirements for the motorcycle chain standard would set a precedent for including dynamicstrength requirements in other chain standards.During the review of the proposed motorcycle chain standard,this committee found thatseveraldifferent testproceduresand analys