G:\Government\Document Files\Handbook ... - Granta Design

MIL-HDBK-5H1 December 1998+ 0< &% =4 6 !' > ? 0' %3 ' ! !Correlative Information for Figure 3.7.4.1.8(e)Product Form: Bare sheet, 0.090-inchProperties: TUS, ksi TYS, ksiTemp.,F82 76 RT(unnotched)87 — RT(notched)Specimen Details: Edge Notched3.000-inches gross width1.500-inches net width0.760-inch notch radius60 flank angleSurface Condition: ElectropolishedReference: 3.2.3.1.8(d)Test Parameters:Loading - AxialFrequency - 1100 to 1500 cpmTemperature - RTEnvironment - AirNo. of Heats/Lots: Not specifiedEquivalent Stress Equation:Log N f = 9.57-3.52 log (S eq -18.7)S eq = S max (1-R) 0.49Standard Error of Estimate = 0.41Standard Deviation in Life = 1.00R 2 = 83%Sample Size = 30[Caution: The equivalent stress model mayprovide unrealistic life predictions for stressratios beyond those represented above.]3-386