REVIEWOFDEVELOPMENTSINPLANESTRAINFRACTURETOUGHNESSTESTINGW.F.Brown,Jr.,editorASTMSPECIALTECHNICALPUBLICATION463Listprice$18.25AMERICANSOCIETYFORTESTINGANDMATERIALS1916RaceStreet,Philadelphia,Pa.19103NATIONALAERONAUTICSANDSPACEADMINISTRATIONCopyrightbyASTMInt'l(allrightsreserved);MonDec713:19:19EST2015Downloaded/printedbyUniversityofWashington(UniversityofWashington)pursuanttoLicenseAgreement.Nofurtherreproductionsauthorized.(~)BYAMERICANSOCIETYFORTESTINGANDMATERIALS1970LibraryofCongressCatalogCardNumber:72-97728ISBN0-8031-0058-2NOTETheSocietyisnotresponsible,asabody,forthestatementsandopinionsadvancedinthispublication.PrintedinLutherviUe-Timonium,Md.September1970CopyrightbyASTMInt'l(allrightsreserved);MonDec713:19:19EST2015Downloaded/printedbyUniversityofWashington(UniversityofWashington)pursuanttoLicenseAgreement.Nofurtherreproductionsauthorized.ForewordTheobjectofthisbookistobringtogetheraseriesofpaperswhichde-scriberecentexperienceobtainedintheUnitedStatesandinEnglandwiththeapplicationoftheASTME-24ProposedMethodofTestforPlaneStrainFractureToughnessofMetallicMaterials.ThisinformationsupplementsthatwhichhasappearedinASTMSTP381onFractureToughnessTestinganditsApplicationandinSTP410onPlaneStrainCrackToughnessTestingofHighStrengthMetallicMaterials.ThispublicationisacooperativeeffortofASTMandNASA.NASAresearchpersonnelhaveparticipatedinASTMFractureCommitteeactivitiessincetheirinceptionin1959.ThisparticipationreflectsthestronginterestthatNASAhasmaintainedinthedevelopmentoftestmethodsforevaluationofthefractureresistanceofengineeringmaterials.Thisinterestarisesfromthenecessityfortheuseofhigh-strengthalloysincriticalpartsofaerospacestructures.BycooperationwithASTMinpublicationofthisbookNASAishelpingtofulfillitsobligationtoprovidethewidestpracticableandappropriatedisseminationofresultsfromitsactivities.GeorgeC.DeutschAssistantDirectorforMaterialsSciencesandEngineering,NASAHeadquarters,Washington,D.C.CopyrightbyASTMInt'l(allrightsreserved);MonDec713:19:19EST2015Downloaded/p...
