#Copyright (C) 2012 F.D.E. Committee #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 # # SAE9255 HRc=50 Su=1750mpa avg. Inland: Spring Steel # Austenitized 900C 30min, Quenched in oil, tempered 400C 45min # 0.58C wt% .81Mn .02P .0111S .88Si .5Cr .03Al # Ref.: B.Yan, "Fatigue Behavior of a Microalloyed Steel Under Uniaxial # Loading", SAE Paper No. 930967, SAE Congress, Detroit, March1-5, 1993. # Also includes Stress vs Nf test data from S.P. Baht. # Assumed one long life point to be a runout. FAC # Data digitized from graphs(with difficulty) and may contain errors. # #FileType= strain_life #DataType= raw #TIMEcol= 0 #NAME= SAE9259 #NAME= SpringSteel #NAME= Inland #Stress_units= mpa #Strain_units= strain #Sy= 1560. 0.2pc offset average of 1657 and 1483 2 batches #Su= 1750. Avg. of 1815 and 1693 (2 batches) #eu= 0 #strain at Su not reported #E= 200000. Not reported. Calc. from cyclic stress-strain plot #FractureStrain= 0.39 #computed from %RA #FractureStress= 3550. #from elast Strain at 2Nf=1 #monotonic_K= 0 not reported #monotonic_n= 0 not reported #BHN= 475. not reported #%RA= 32.2 % #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl 0.02134 310 1362 0 0.01453 200000 2411 0.02134 324 1423 0 0.01422 200000 2464 0.02032 163 1366 0 0.01349 200000 2356 0.02032 187 1418 0 0.01323 200000 2400 0.01835 372 1408 0 0.01131 200000 2274 0.01734 406 1373 0 0.01047 200000 2182 0.01530 644 1355 0 0.00852 200000 2036 0.01527 699 1320 0 0.00867 200000 2008 0.01229 937 1267 0 0.00595 200000 1764 0.01025 1441 1188 0 0.00431 200000 1561 0.01026 915 1153 0 0.00449 200000 1538 0.01021 2097 1271 0 0.00386 200000 1611 0.00825 2298 1235 0 0.00207 200000 1427 0.00924 2769 1166 0 0.00341 200000 1467 0.00822 2849 1087 0 0.00279 200000 1337 0.00818 4150 1257 0 0.00189 200000 1434 0.00717 5784 1026 0 0.00204 200000 1213 0.00622 8116 1104 0 0.00070 200000 1172 0.00755 8974 1079 0 0.00216 200000 1276 0.00568 14039 919 0 0.00109 200000 1022 0.00657 14446 1222 0 0.00046 200000 1267 0.00514 19193 990 0 0.00019 200000 1009 0.00410 22578 772 0 0.00024 200000 796 0.00469 26738 937 0 0.0 200000 937 0.00468 32237 937 0 0.0 200000 937 0.00416 53951 837 0 0.0 200000 835 0.00365 203516 729 0 0.0 200000 729 0.00272 3952515 545 0 0.0 200000 545 0.00205 8772845 410 0 0.0 200000 410 #runout assumed #Data below is from S.P. Baht Stress Control tests: 0.00480 27584 960 0 0 200000 960 0.00480 32761 961 0 0 200000 961 0.00447 49139 894 0 0 200000 894 0.00446 62242 893 0 0 200000 893 0.00412 72908 825 0 0 200000 825 0.00412 82057 825 0 0 200000 825 0.00379 82698 759 0 0 200000 759 0.00378 134120 757 0 0 200000 757 0.00345 141105 691 0 0 200000 691 0.00344 186580 689 0 0 200000 689 0.00345 254826 690 0 0 200000 690 0.00345 277704 690 0 0 200000 690 0.00324 4070140 647 0 0 200000 647 0.00324 5268100 648 0 0 200000 648 0.00310 6181860 620 0 0 200000 620 0.00345 7054600 690 0 0 200000 690 0.00276 9678960 552 0 0 200000 552 #runout # #