Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4977255 | Mechanical Systems and Signal Processing | 2017 | 13 Pages |
Abstract
In this paper, we present the application of cyclostationary modelling for the extrapolation of short stationary load strain samples measured in situ on hydraulic turbine blades. Long periods of measurements allow for a wide range of fluctuations representative of long-term reality to be considered. However, sampling over short periods limits the dynamic strain fluctuations available for analysis. The purpose of the technique presented here is therefore to generate a representative signal containing proper long term characteristics and expected spectrum starting with a much shorter signal period. The final objective is to obtain a strain history that can be used to estimate long-term fatigue behaviour of hydroelectric turbine runners.
Related Topics
Physical Sciences and Engineering
Computer Science
Signal Processing
Authors
Marc Poirier, Martin Gagnon, Antoine Tahan, André Coutu, Joël Chamberland-lauzon,