# # Lower Bound manually Fitted Curve # Merged SAE 4140 Bhn 350 to 394 # aisiIt064sae4140_Bhn381.html aisiIt068sae4140_Bhn353.html # aisiIt093sae4140_Bhn353.html aisiIt069sae4140_Bhn371.html # aisiIt067sae4140_Bhn381.html aisiIt097sae4140_Bhn385.html # aisiIt066sae4140_Bhn390.html aisiIt080sae4140_Bhn394.html #FileType= strain_life #DataType= fitted #Name= SAE4140 #Name= AisiMerged #Name= Bhn350-394 #Name= LowBound #Stress_units= MPa #Strain_units= strain #Su= 1416 (average) Range from 1239 to 1537mpa #Sy= 1295 (average) Rg: 1167 to 1363 #E= 202000 (average) #BHN= 374 (average) # SAE4140 AisiMerged BHN= 374 Fn= 0 #No. fatigue data points= 161 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' # NOTE!! Manual Fit to Lower Bound data Strain-Stress-Life FAC Jun09 # Process: Start with median fitted curve and change Life values # thus preserving the stress-strain behavior for correct Neuber. #Stress_Units= MPa # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 0.86643 1 1384.7 0. 0.85957 202000. #Fitted_point manually 0.02797 100 1052.1 0. 0.02276 202000. #Fitted_point manually 0.01712 200 1003.3 0. 0.01215 202000. #Fitted_point manually 0.01235 350 967.9 0. 0.00756 202000. #Fitted_point manually 0.00932 540 933.7 0. 0.00470 202000. #Fitted_point manually 0.00691 1500 890.3 0. 0.00250 202000. #Fitted_point manually 0.00580 3700 858.7 0. 0.00155 202000. #Fitted_point manually 0.00506 6500 827.9 0. 0.00096 202000. #Fitted_point manually 0.00441 8000 788.5 0. 0.00050 202000. #Fitted_point manually .0038 35000 744 0. .0002 202000. #Fitted_point manually .003 80000 601. 0. .00001 202000. #Fitted_point manually .0028 150000 565. 0. .0 202000. #Fitted_point manually .0026 2000000 525. 0. .0 202000. #Fitted_point manually .0026 10000000 525. 0. .0 202000. #Fitted_point manually # #