Fatigue Life Prediction for the Skin Structures of Aircraft Sensor Pod Under Acoustic Load with Mean Stress

The skin structure of sensor pod mounted on the exterior aircraft can be exposed to acoustic dynamic load and static such as aerodynamic pressure inertial during flight. Fatigue life prediction structural model under should performed also differential stiffness modified by considered. noise test spectrum MIL-STD-810G was applied stress response power spectral density (PSD) calculated. frequency analysis with or without prestress induced inplane load, compared. Time series data generated using calculated PSD, time domain fatigue were predicted variation due according different considering mean examined decreasing observed in compressive load.