# # NOTE !! Fitted Curve Data !! # SAE 15V24 HotFormed, Controlled Cooled AISI Iter 28 HRc=21 # Republic Steel Elec.Furn. Concast, HotFormed, Controlled Cooled # Cut from GM control arm Rectangular cross section 1.5 x 0.66inches. # Chem.: 0.28%C 1.36Mn .012P .02S .30Si .050Cu .03Ni # .13V .021Al .02Ti Pearlite= 40% Ferrite= 60% # ASTM Grain Size(Long.) 4 to 5, # Inclusion Rating Type A (sulfide)= 1.5 thin, Type B,C,D=0 # Tested by B.Li UToledo, 1999 #FileType= strain_life #DataType= fitted #Name= SAE15V24 #Name= AisiIt_28 #Stress_units= MPa #Strain_units= strain #Sy= 645.7 #Su= 877.6 #E= 207000 #monotonic_K= 1317.9 #monotonic_n= 0.129 #MaterialForm= bar #FailureDef= 50% load drop #BHN= 243 #Hardness, Rockwell B= 98 # #Original No. fatigue data points= 18 # #NOTE!! The Following Points are <b>FITTED DATA:</b> #NOTE!! Fitted Stress computed using Experm. K' and n' #NOTE!! Manually adjusted fatigue limit points FAC may09 # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 1.86904 1 1427.1 0. 1.86214 207000. #Fitted_point 1.11713 2 1340.9 0. 1.11065 207000. #Fitted_point 0.56686 5 1234.9 0. 0.56089 207000. #Fitted_point 0.34013 10 1160.3 0. 0.33452 207000. #Fitted_point 0.20478 20 1090.3 0. 0.19951 207000. #Fitted_point 0.10559 50 1004.1 0. 0.10074 207000. #Fitted_point 0.06463 100 943.4 0. 0.06008 207000. #Fitted_point 0.04011 200 886.4 0. 0.03582 207000. #Fitted_point 0.02203 500 816.3 0. 0.01808 207000. #Fitted_point 0.01449 1000 767.0 0. 0.01078 207000. #Fitted_point 0.00991 2000 720.6 0. 0.00643 207000. #Fitted_point 0.00645 5000 663.6 0. 0.00325 207000. #Fitted_point 0.00495 10000 623.6 0. 0.00194 207000. #Fitted_point 0.00399 20000 586.0 0. 0.00116 207000. #Fitted_point 0.00319 50000 539.8 0. 0.00059 207000. #Fitted_point 0.00280 100000 507.5 0. 0.00035 207000. #Fitted_point 0.00252 200000 477.2 0. 0.00021 207000. #Fitted_point 0.00223 500000 440.0 0. 0.00011 207000. #Fitted_point 0.00206 1000000 413.9 0. 0.00006 207000. #Fitted_point 0.00192 2000000 389.4 0. 0.00004 207000. #Fitted_point adjusted 0.00192 10000000 389.4 0. 0.00004 207000. #Fitted_point adjusted # #