# # Fitted Curve. Fatigue limit adjusted manually. FAC Jun09 # AISI 4142 ALLOY, QUENCHED AND DEFORMED AT 560F, LONGITUDINAL # LANDGRAF, R.W., T+AM RPT 320, 1968, BHN 475 # saedigcurve_v2.2.f starts. # Copyright (C) 2000 R.W. Landgraf # 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 MERCHANTA- # BILITY 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 # #NAME= SAE4142 #Name= AlloySteel #Fn= 33 #FileType= strain_life #DataType= fitted #TIMEcol= 0 #Stress_units= ksi #Strain_units= strain #Su= 294.80 #Sy= 274.80 #E= 29900 entered. Original was 28979. #Modulus changed (Jun09) to improve fit of cyclic stress-straincurve #To see effect change it back and re-submit. #%RA= 20.0 #BHN= 475. #NO. FAT. PTS.= 10 # SAE4142 AlloySteel BHN= 475 Fn= 33 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 29900. KSI, 206. GPA K' = 295.4 KSI, 2036.MPA #YIELD,0.2%= 275. KSI, 1895. MPA N' = 0.0810 #ULT. STRG.= 295. KSI, 2033. MPA F. STRG COEF= 274.2 KSI, 1891.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0702 #N = 0.0000 FAT DUCT COEF= 0.3995 #RED. IN AREA = 20.0 F.DUCT EXP, c=-0.8668 #T. FRAC. STG.= 0.0 KSI, 0. MPA Exp Cyc Yld = 179. Ksi,1231.MPA #T. FRAC. STR.= 0.000 Fit Cyc Yld = 185. Ksi,1276.MPA #No. fatigue data points= 10 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' # NOTE!! Fatigue limit data adjusted manually. FAC June2009 #Stress_Units= KSI # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 0.40870 1 288.8 0. 0.39904 29900. #Fitted_point 0.22783 2 274.5 0. 0.21864 29900. #Fitted_point 0.10721 5 256.8 0. 0.09862 29900. #Fitted_point 0.06210 10 244.1 0. 0.05394 29900. #Fitted_point 0.03721 20 232.0 0. 0.02945 29900. #Fitted_point 0.02043 50 216.8 0. 0.01317 29900. #Fitted_point 0.01402 100 205.9 0. 0.00713 29900. #Fitted_point 0.01037 200 195.5 0. 0.00383 29900. #Fitted_point 0.00776 500 182.2 0. 0.00166 29900. #Fitted_point 0.00665 1000 172.7 0. 0.00088 29900. #Fitted_point 0.00593 2000 163.6 0. 0.00046 29900. #Fitted_point 0.00529 5000 152.4 0. 0.00020 29900. #Fitted_point 0.00494 10000 144.6 0. 0.00011 29900. #Fitted_point 0.00465 20000 137.4 0. 0.00006 29900. #Fitted_point 0.00433 50000 128.6 0. 0.00003 29900. #Fitted_point 0.00411 100000 122.4 0. 0.00001 29900. #Fitted_point 0.00390 200000 116.5 0. 0.00001 29900. #Fitted_point 0.00366 500000 109.2 0. 0.00000 29900. #Fitted_point 0.00348 1000000 104.0 0. 0.00000 29900. #Fitted_point 0.00348 10000000 104.0 0. 0.00000 29900. #Fitted_point manually # #