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(c)Product Form: 1-1/8-inch diam. rolled barProperties: TUS, ksi TYS, ksiTemp.,F96.5 — RTSpecimen Details: Notched, K t = 3.4Notch-root-radius = 0.010Test section diameter (Net)= 0.400 inchGross 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 = 9.19-3.60 log (S eq -5)S eq = S max (1-R) 0.39R 2 = 87%Sample Size = 48[Caution: The equivalent stress model mayprovide unrealistic life predictions for stressratios beyond those represented above.]3-384