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

MIL-HDBK-5H1 December 1998+ 0< &% =4 6 !' > ? ' %3 ' ! !Correlative Information for Figure 3.7.4.1.8(g)Product Form: Bare sheet, 0.090-inchProperties: TUS, ksi TYS, ksiSpecimen Details: NotchedTemp.,F82 76 RT(unnotched)82 — RT(notched)Notch Gross Net NotchType Width Width RadiusEdge 2.25 1.500 0.057Edge 4.10 1.500 0.070Fillet 2.25 1.500 0.0195Surface Condition: ElectropolishedReferences: 3.2.3.1.8(b), (f), (g), and (h)Test Parameters:Loading - AxialFrequency - 1100 to 1800 cpmTemperature - RTEnvironment - AirNo. of Heats/Lots: Not specifiedEquivalent Stress Equation:Log N f = 10.2-4.63 log (S eq -5.3)S eq = S max (1-R) 0.51Standard Error of Estimate = 0.51Standard Deviation in Life = 1.08R 2 = 78%Sample Size = 126[Caution: The equivalent stress model mayprovide unrealistic life predictions for stressratios beyond those represented above.]3-388