1、Standard Test Method for Determining Stress Intensification Factors(i-Factors)for Metallic Piping ComponentsASME Code for Pressure Piping,B31AN AMERICAN NATIO NAL STANDARDASME B31J-2008Copyright 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without
2、 written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME B31J-2008Standard Test Methodfor Determining StressIntensif
3、ication Factors(i-Factors)for MetallicPiping ComponentsASME Code for Pressure Piping,B31AN AMERICAN NATIONAL STANDARDCopyright 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford
4、University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:May 30,2008This Standard will be revised when the Society approves the issuance of a new edition.There willbe no ad
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12、-5990Copyright 2008 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by T
13、homson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B31 Committee.viIntroduction.vii1General.12Definitions.13Test Procedure.14Stress Inten
14、sification Factor.35Variations in Materials and Geometry.46Test Report.4Figures3.1Representative Test Arrangement.23.3Displacement,D,and Force,F,Recorded During Loading and Unloading of a TestSpecimen,in Both Positive and Negative Directions,With LinearDisplacement.2Table4.4Stress Intensification In
15、crease Factor.3Nonmandatory AppendixACommentary on B31J.5iiiCopyright 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2
16、010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORDIn 1990,the B31 Code for Pressure Piping,Technical Committee on Mechanical Design(MDC),determinedthattherewasaneedtodevelopastandardtestmethodtodeterminestressintensifica-tion factors(SIFs or i-factors)for piping components and joints.At the time,the B31 Code booksprovided SIFs for various standard piping components and joints,but did not provide guidanceon how to establish SIFs
