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In this text, the method of deformation calculation for the thin wall member under shock load. We made research into impact, distortion of the thin wall member which is under constraint condition of freely supported beam by dint of emulation though MATLAB and the finite element analysis software ANSYS, the object of this research is aluminium alloy thin wall member.
In this paper, a method is proposed to diagnose faults of marine main engine shaft. Since empirical studies show various faults of fuel oil system induces the variation of vibration signals, we propose to diagnose faults of marine main engine shaft using vibration signal from engine. The proposed method consists of three steps. First, a wavelet analysis method is used to characterize the power spectrum...
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