| Autor: |
Pratumnopharat, Panu, Leung, Pak Sing, Court, Richard S. |
| Zdroj: |
2012 2nd International eConference on Computer & Knowledge Engineering (ICCKE); 1/ 1/2012, p396-401, 6p |
| Abstrakt: |
This article presents a novel method in extracting fatigue damage from the stress-time history of the horizontal axis wind turbine blades. A novel method based on wavelet transform (WT) is proposed to shorten the length of the stress-time history. Based on Morlet wavelet (Morl), WT is taken to the stress-time history to generate a plot of accumulative power spectral density (AccPSD) distribution with time. The variation of fatigue damage with AccPSD levels is studied to determine the cutoff level which is controlled by the differences in the global signal statistics (mean stress, root-mean-square and kurtosis). [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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