PLANESTRAINCRACKTOUGHNESSTESTINGOFHIGHSTRENGTHMETALLICMATERIALSbyWilliamF.Brcwn,Jr.,andJohnE.SrawieyASTMSPECIALTECHNICALPUBLICAT'ONNO.410Listprice$5.50;30percentdiscounttomemberspublishedbytheAMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceStreet,Philadelphia,Pa.19103incooperationwiththeNATIONALAERONAUTICSANDSPACEADMINISTRATIONCopyrightbyASTMInt'l(allrightsreserved);MonDec2110:55:49EST2015Downloaded/printedbyUniversityofWashington(UniversityofWashington)pursuanttoLicenseAgreement.Nofurtherreproductionsauthor©BYAMERICANSOCIETYFORTESTINGANDMATERIALS1966LibraryofCongressCatalogCardNumber;66-29517NOTETheSocietyisnotresponsible,asabody,forthestatementsandopinionsadvancedinthispublication.PrintedinBaltimore,Md.December,1967CopyrightbyASTMInt'l(allrightsreserved);MonDec2110:55:49EST2015Downloaded/printedbyUniversityofWashington(UniversityofWashington)pursuanttoLicenseAgreement.Nofurtherreproductionsauthorized.ForewordTheobjectiveofthisreportistopresentastate-of-the-artsurveyoftheanalyticalandexperimentalbasisfordeterminationoftheplanestraincracktoughnessofmetallicmaterials.Itisanticipatedthattheinforma-tionpresentedwillserveasabasisforformulatingrecommendedpracticesforK„.testing.ThispublicationisacooperativeeffortofASTMandNASA.MostofthedatacontainedherewereobtainedattheNASA-LewisResearchCenteraspartofaNASA-NRLCooperativeProgramforPlaneStrainFractureToughnessTesting.BycooperatingwithASTMinpublicationofthisinformation,NASAishelpingtofulfillitsobligationtoprovidethewidestpracticableandappropriatedisseminationoftheresultsfromitsresearchactivities.ThispublicationwaspreparedforASTMCommitteeE-24onFrac-tureTestingofMetalsasthefirstreportofSubcommitteeIonHighStrengthMetallicMaterials.TheauthorsarewithNASALewisResearchCenter,Cleveland,Ohio.Themembersofthesubcommitteeare:G.E.Pellissier(chairman),U.S.SteelCorp.;C.D.Beachem,U.S.NavalResearchLaboratory;W.F.Brown,Jr.,NASALewisResearchCenter;J.E.Campbell,BattelleMemorialInst.;T.J.Dolan,UniversityofIlli-nois;R.H.Heyer,ArmcoSteelCorp.;J.H...
