Abstract:

On the basis of fatigue test data on 267 aluminum alloy test pieces and 139 steel alloy test pieces extracted from Handbook of Fatigue Properties of Aerial Metals, this thesis studies the law of change of the fatigue scatter factor with fatigue test stress, i.e., within a given range of stress, the fatigue scatter factor increases as the stress decreases. A curve of the law of change wise drawn accordingly.

Key words: olid , mechanics,  , fatigue , scatter , factor,  , test , stress,  , law , of , change