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

MIL-HDBK-5H1 December 1998+ 0< &% =4 6 !' > ? 03' %3 ! ' ! !Correlative Information for Figure 3.7.4.1.8(b)Product Form: 1-1/8-inch diam. rolled barProperties: TUS, ksi TYS, ksiTemp.,F99.2 — RTSpecimen Details: Notched, K t = 1.6Notch-root-radius = 0.100Test section diameter (Net) =0.400 inchesGross diameter = 0.450 inch60 grooveSurface Condition: Polished to 10 micro-inchesReference: 3.2.1.1.8(b)Test Parameters:Loading - AxialFrequency - 60 HzTemperature - RTAtmosphere - AirNo. of Heats/Lots: 1Equivalent Stress Equation:Log N f = 8.28-2.62 log (S eq -15)S eq = S max (1-R) 0.53R 2 = 82%Sample Size = 34[Caution: The equivalent stress model mayprovide unrealistic life predictions for stressratios beyond those represented above.]3-383