| A comparison is made between FFT method and wavelet transform. In conclusion, wavelet analysis is worthwhile doing both in theory and practices. Through processing vibration signal of the damaged blade, it can be seen that the different depth and location splits have the different influences to the vibration character of the blade. It can be acquired that wavelet analysis has the advantages in collecting the fault characters of the blade. Zhang Min (Thermal power engineering) Directed by vice prof. Ding Changfu, Han Zhonghe...
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