ISO-7438-2005--金属材料-弯曲试验

ReferencenumberISO7438:2005(E)©ISO2005INTERNATIONALSTANDARDISO7438Secondedition2005-06-15Metallicmaterials—BendtestMatériauxmétalliques—EssaidepliageCopyrightInternationalOrganizationforStandardizationReproducedbyIHSunderlicensewithISONotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,`,``-`-`,,`,,`,`,,`---ISO7438:2005(E)PDFdisclaimerThisPDFfilemaycontainembeddedtypefaces.InaccordancewithAdobe'slicensingpolicy,thisfilemaybeprintedorviewedbutshallnotbeeditedunlessthetypefaceswhichareembeddedarelicensedtoandinstalledonthecomputerperformingtheediting.Indownloadingthisfile,partiesacceptthereintheresponsibilityofnotinfringingAdobe'slicensingpolicy.TheISOCentralSecretariatacceptsnoliabilityinthisarea.AdobeisatrademarkofAdobeSystemsIncorporated.DetailsofthesoftwareproductsusedtocreatethisPDFfilecanbefoundintheGeneralInforelativetothefile;thePDF-creationparameterswereoptimizedforprinting.EverycarehasbeentakentoensurethatthefileissuitableforusebyISOmemberbodies.Intheunlikelyeventthataproblemrelatingtoitisfound,pleaseinformtheCentralSecretariatattheaddressgivenbelow.©ISO2005Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherISOattheaddressbeloworISO'smemberbodyinthecountryoftherequester.ISOcopyrightofficeCasepostale56•[e-mail]©ISO2005–AllrightsreservedCopyrightInternationalOrganizationforStandardizationReproducedbyIHSunderlicensewithISONotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,`,``-`-`,,`,,`,`,,`---ISO7438:2005(E)©ISO2005–AllrightsreservediiiContentsPageForeword............................................................................................................................................................iv1Scope.....................................................................................................................................................12Symbolsanddesignations..................................................................................................................13Principle.................................................................................................................................................14Testequipment.....................................................................................................................................25Testpiece..............................................................................................................................................46Procedure..............................................................................................................................................57Interpretationofresults........................................................................................................................78Testreport.............................................................................................................................................7AnnexA(informative)Determinationofthebendanglefromthemeasurementofthedisplacementoftheformer..................................................................................................................8CopyrightInternationalOrganizationforStandardizationReproducedbyIHSunderlicensewithISONotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,`,``-`-`,,`,,`,`,,`---ISO7438:2005(E)iv©ISO2005–AllrightsreservedForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part2.ThemaintaskoftechnicalcommitteesistoprepareInternationalStandards.DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting.PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ISO7438waspreparedbyTechnicalCommitteeISO/TC164,Mechanicaltestingofmetals,SubcommitteeSC2,Ductilitytesting.Thissecondeditioncancelsandreplacesthefirstedition(ISO7438:1985),whichhasbeentechnicallyrevised.CopyrightInternationalOrganizationforStandardizationReproducedbyIHSunderlicensewithISONotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,