STP1171ConstraintEffectsinFractureE.M.Hackett,K.-H.Schwalbe,andR.H.Dodds,Jr.,editorsASTMPublicationCodeNumber(PCN)04-011710-30ASTM1916RaceStreetPhiladelphia,PA19103CopyrightbyASTMInt'l(allrightsreserved);WedDec2319:06:07EST2015Downloaded/printedbyUniversityofWashington(UniversityofWashington)pursuanttoLicenseAgreement.Nofurtherreproductionsauthorized.LibraryofCongressCataloginginPublicationDataConstrainteffectsinfracture/E.M.Hackett,K.-H.Schwalbe,RH.Dodds,editors.p.cm.--(STP;1171)"ASTMpublicationcodenumber(PCN)ContainspaperspresentedatthesymposiumheldinIndianapolison8-9May1991.Includesbibliographicalreferencesandindex.ISBN0-8031-1461-81.Fracturemechanics.2.Micromechanics.3.Continuummechanics.I.Hackett,E.M.II.Schwalbe,K.-H.(Karl-Heinz)Ill.Dodds,R.H.(RobertH.),1955-IV.Series:ASTMspecialtechnicalpublication:1171.TA409.C661993620.1/126--dc2092-42112CIPCopyright|1993AMERICANSOCIETYFORTESTINGANDMATERIALS,Philadelphia,PA.Allrightsreserved.Thismaterialmaynotbereproducedorcopied,inwholeorinpart,inanyprinted,mechanical,electronic,film,orotherdistributionandstoragemedia,withoutthewrittenconsentofthepublisher.PhotocopyRightsAuthorizationtophotocopyitemsforinternalorpersonaluse,ortheinternalorpersonaluseofspecificclients,isgrantedbytheAMERICANSOCIETYFORTESTINGANDMATERIALSforusersregisteredwiththeCopyrightClearanceCenter(CCC)TransactionalReportingService,providedthatthebasefeeof$2.50percopy,plus$0.50perpageispaiddirectlytoCCC,27CongressSt.,Salem,MA01970;(508)744-3350.ForthoseorganizationsthathavebeengrantedaphotocopylicensebyCCC,aseparatesystemofpaymenthasbeenarranged.ThefeecodeforusersoftheTransactionalReportingServiceis0-8031-1481-8/93$2.50+.50.PeerReviewPolicyEachpaperpublishedinthisvolumewasevaluatedbythreepeerreviewers.Theauthorsaddressedallofthereviewers'commentstothesatisfactionofboththetechnicaleditor(s)andtheASTMCommitteeonPublications.Thequalityofthepapersinthispublicationreflectsnotonlytheobviouseffortsoftheauthorsandthetechnicaleditor(s),butalsotheworkofthesepeerre...