#Copyright (C) 2011 F.D.E. Committee and N.E.Dowling #This data file is free software - you can redistribute it and/or #modify it under the terms of the GNU General Public License as #published by the Free Software Foundation; either version 2 of the #license, or (at your option) any later version. #This data file is distributed in the hope that it will be useful, #but WITHOUT ANY WARRANTY - without even the implied warranty of #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #GNU General PUblic License for more details. #You should have received a copy of the GNU General PUblic License #along with this program - if not, write to the Free Software #Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA #Try also their web site: http://www.gnu.org/copyleft/gpl.html # # SAE4340 HeatTreated Q+T Su=1172mpa=170ksi # NOTE!! : PERIODIC OVERLOAD test data. See list below. # Do not use to predict constant amplitude tests. # Specimen 0.25in diam X 0.65in straight section, Quench + Tempered same as Endo/Morrow. # Ref.: N.E. Dowling, "Fatigue Life and Inelastic Strain Response Under Complex # Histories for an Alloy Steel," T.A.M. Report 354, U.of Illinois, April 1972. # Also see: N.E.Dowling, "Fatigue Life and Inelastic Strain Response under Complex # Histories for an Alloy Steel," ASTM J.Test. and Eval., V1 N4 Jul 1973 pp.271-287 # Note: Test data digitized from graphs and may contain slight errors. # #FileType= strain_life #DataType= raw #TIMEcol= 0 #NAME= SAE4340 #NAME= HeatTreated #NAME= Steel #Stress_units= mpa #Strain_units= strain #Sy= 1103. 0.2pc offset #Su= 1172. #eu= 0 #strain at Su not reported #E= 205300. #FractureStrain= 0.82 #computed from %RA #FractureStress= 1634. #BHN= 0. # not reported #%RA= 56 % #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl 0.02035 450 950 0 0.01573 205300 1992 0.00995 1955 837 0 0.00588 205300 1308 0.00495 12007 705 0 0.00151 205300 846 #Above pts are constant amplitude. #Pts below are initial overstrained: 0.00491 17179 700 0 0.00150 205300 840 0.00390 27880 631 0 0.00083 205300 711 0.00343 52351 602 0 0.00050 205300 652 0.00316 86690 579 0 0.00034 205300 613 0.00286 160278 553 0 0.00017 205300 570 0.00268 261471 522 0 0.00014 205300 536 0.00254 324902 502 0 0.00010 205300 512 0.00245 417714 483 0 0.00010 205300 493 #Pts below are periodic overstrained or overloaded #See papers for more details. 0.00241 486135 482 0 0.00006 205300 488 0.00239 499210 482 0 0.00004 205300 487 0.00222 524923 448 0 0.00004 205300 452 0.00218 817000 447 0 0.00000 205300 447 0.00222 1631390 448 0 0.00004 205300 452 0.00187 1723561 380 0 0.00002 205300 383 0.00201 1874000 413 0 0.00000 205300 413 0.00204 2058870 413 0 0.00003 205300 416 0.00187 2757200 381 0 0.00002 205300 383 0.00221 3237020 448 0 0.00003 205300 451 0.00186 6489530 377 0 0.00002 205300 379 # #