#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! (raw data in different file) # SAE1045 steel Q+T HRc=35 # 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' #Total Strain 2Nf Stress Mean Plastic Strain Initial ## Amp Amp Stress Amp Elastic Mod. 0.55 1 1879. 0. .541 205000. #Fitted_point monotonic 0.01865 500 902.0 0. 0.01425 205000. #Fitted_point 0.01314 1000 864.2 0. 0.00893 205000. #Fitted_point 0.00964 2000 828.0 0. 0.00560 205000. #Fitted_point 0.00686 5000 782.9 0. 0.00304 205000. #Fitted_point 0.00559 10000 750.8 0. 0.00193 205000. #Fitted_point 0.00474 20000 720.4 0. 0.00123 205000. #Fitted_point 0.00402 50000 682.8 0. 0.00068 205000. #Fitted_point 0.00364 100000 656.1 0. 0.00044 205000. #Fitted_point 0.00337 200000 630.8 0. 0.00029 205000. #Fitted_point 0.00309 500000 599.1 0. 0.00016 205000. #Fitted_point 0.00292 1000000 576.2 0. 0.00011 205000. #Fitted_point #Traditional fit does not go flat here, but raw data does. Alter: 0.00292 10000000 576.2 0. 0.00011 205000. #Fitted_point manually #