#Copyright (C) 2015 M.El-Zeghayar and Fatigue Design+Evaluation Comm. #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 # # Note!!: Periodic Overstrain data! # SAE1045 steel Q+T HRc=35 Periodic underloads of +/-725mpa # Cut from 19mm diam. hot rolled bars, then heat to 845C, quench in oil # temper 150min at 315C polished to 600 emery paper. # Chem.: 0.46Cwt% .81Mn .027P .023S .17Si .27Cu .15Cr # Ref.: Maria El Zeghayar, "The Introduction of Crack Opening Stress # Modeling into Strain-Life And Small Crack Growth Fatigue Analysis," # Dept. Civil Engr. Univ. of Waterloo, 2010. #FileType= strain_life #DataType= raw #TimeCol= 0 #Name= SAE1045steel #Name= Quench+Temp-Rc=35 #Stress_units= mpa #Strain_units= strain #E= 205000 #Sy= 1200. #Su= 1271. #%RA= 42.5 #FractureStress= 1879. #FractureStrain= 0.55 #monotonic_K= 1470 #monotonic_n= 0.033 #BHN= 326 # #StrAmp 2NF StsAmp MeanS PlasStr Elastic Mod. 0.01590 450 870.9 0 0.0115 205000 0.00993 1600 827.2 0 0.0058 205000 0.01010 2900 844.7 0 0.0059 205000 0.00989 3060 804.8 0 0.0059 205000 0.00699 6200 798.1 0 0.0030 205000 0.00705 4000 798.1 0 0.0031 205000 0.00702 6000 779.5 0 0.0032 205000 0.00502 11200 745.1 0 0.0014 205000 0.00497 22000 720.3 0 0.0014 205000 0.00495 19700 719.5 0 0.0014 205000 #Data above is non-overstrained constant ampl. # #Data below is from periodic overstrain tests ## Equiv. #TotStrAmpl 2Nf StsAmpl So PlsStrAmpl Init.Emod 0.0027 38598 553 172 0.00000 205000 0.0026 187530 526 199 0.00003 205000 0.0024 17096 498 227 0.00000 205000 0.0023 39750 470 255 0.00001 205000 0.0022 335042 443 282 0.00004 205000 0.002 131562 415 310 0.00000 205000 0.0019 407158 387 338 0.00001 205000 0.0016 1712052 332 393 0.00000 205000 0.0015 1222336 304 421 0.00002 205000 0.0013 858574 277 448 0.00000 205000 0.0012 971650 243 482 0.00001 205000 0.001 2073884 205 520 0.00000 205000 0.0008 15538314 173 552 0.00000 205000 0.0008 12024304 156 569 0.00004 205000 #runout #Data with varying small os cycles. See Thesis 0.001 993524 200 525 0.00002 205000 0.001 979542 200 525 0.00002 205000 0.001 819220 200 525 0.00002 205000 0.001 1186290 200 525 0.00002 205000 0.001 919974 200 525 0.00002 205000 0.001 1308382 200 525 0.00002 205000 0.001 2624618 200 525 0.00002 205000 0.001 2521926 200 525 0.00002 205000 0.001 6030704 200 525 0.00002 205000 # #