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

MIL-HDBK-5H1 December 1998+ 0< &% =4 6 !' > ? 7' %3 ' ! !Correlative Information for Figure 3.7.4.1.8(f)Product Form: Bare sheet, 0.090-inchProperties: TUS, ksi TYS, ksiSpecimen Details: NotchedTemp.,F82 76 RT(unnotched)88 — RT(notched)Notch Gross Net NotchType Width Width RadiusCenter 4.50 1.50 1.50Edge 2.25 1.50 0.3175Fillet 2.25 1.50 0.1736Surface Condition: ElectropolishedReferences: 3.2.3.1.8(b) and (f)Test Parameters:Loading - AxialFrequency - 1100 to 1500 cpmTemperature - RTEnvironment - AirNo. of Heats/Lots: Not specifiedEquivalent Stress Equation:Log N f = 7.50-2.46 log (S eq -18.6)S eq = S max (1-R) 0.54Standard Error of Estimate = 0.31Standard Deviation in Life = 0.85R 2 = 57%Sample Size = 112[Caution: The equivalent stress model mayprovide unrealistic life predictions for stressratios beyond those represented above.]3-387