Signal Processing
Digital Signal Processing (4th Edition)
Digital Signal Processing (4th Edition)
Wavelet-type denoising for mechanical structures diagnosis
EMESEG'10 Proceedings of the 3rd WSEAS international conference on Engineering mechanics, structures, engineering geology
About the effectiveness of damage detection methods based on vibration measurements
EMESEG'10 Proceedings of the 3rd WSEAS international conference on Engineering mechanics, structures, engineering geology
Efficient computation of the DFT with only a subset of input oroutput points
IEEE Transactions on Signal Processing
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The paper proposes a fast algorithm for accurate estimation of frequency within a specified, narrow range. The algorithm is useful for the identification of the natural frequencies of cantilever beams for damage detections purposes. The procedure is based on the generalized Goertzel algorithm combined with apriori knowledge of the natural frequencies intervals for cantilever beams given their physical characteristics. We compare our approach with the Chirp Z-transform and several frequency or time-frequency methods to illustrate its advantages for online damage detection.