# #Copyright (C) 2015 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!!: Fitted Data Points of 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= fitted #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 # #saedigcurve_v2.2.f starts. #NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #TotStrAmpl 2Nf StsAmpl So PlsStrAmpl Init.Emod 0.55 1 1879. 0. .541 205000. #Fitted_point monotonic 0.02067 400 912.8 0. 0.01622 205000. #Fitted_point manually 0.01450 850 875.0 0. 0.01023 205000. #Fitted_point manually 0.01043 2000 837.6 0. 0.00635 205000. #Fitted_point manually 0.00704 5000 786.7 0. 0.00321 205000. #Fitted_point manually 0.00540 9000 744.7 0. 0.00176 205000. #Fitted_point manually 0.00424 13000 696.0 0. 0.00084 205000. #Fitted_point manually 0.00318 20000 610.6 0. 0.00020 205000. #Fitted_point manually 0.00261 30000 527.4 0. 0.00004 205000. #Fitted_point manually 0.00218 80000 445.0 0. 0.00001 205000. #Fitted_point manually 0.00174 200000 356.1 0. 0.00000 205000. #Fitted_point manually 0.00148 400000 303.1 0. 0.00000 205000. #Fitted_point manually 0.00127 750000 259.5 0. 0.00000 205000. #Fitted_point manually 0.00104 2000000 212.6 0. 0.00000 205000. #Fitted_point manually 0.00089 7000000 183.4 0. 0.00000 205000. #Fitted_point manually 0.00077 15000000 158.6 0. 0.00000 205000. #Fitted_point manually #