The model of laminated plate with damage is introduced and the damage evolution of the plate is simulated,the effects of striking object initial velocity,damage and governing voltages on the nonlinear dynamic response of the plate are discussed and the effects of striking object velocity and governing voltages on the fatigue damage life of the plate under cycle impact loads are investigated.

The withstanding ability against the impact of electrical disturbances and torsional fatigue life expenditures are quite necessary to be studied for such a unit.

In this paper distribution function of roller chain fatigue lifetime are discussed and characteristic of Weibull distribution form parameter of fatigue lifetime that vary with its specification and loading are analyzed, then sampling inspection plan of lifetime of reliability and average lifetime are designes.

Substituting this stress intensity factor into Paris expression obtained by experiment, a prediction of remaining fatigue lifetime for a sucker rod is calculated.

Deviation of tradition fatigue lifetime prediction is bigger.

The analysis of rotor strength and fatigue life;

Prediction of fatigue life of packaging EMC material based on BP neural networks;

Predication of fatigue life of structure with random scan vibration;

Neural network used in the prediction of the low-periodic fatigue life-span of materials;

3D finite element analysis on crankshaft fatigue life-span;