The powerful data-driven analysis furnished by the Proper Orthogonal Decomposition Transform (POD) reveals that ensembles of collocated acceleration signals associated with a sequence of point impulses applied over a backbone curve of a propeller are underlined by a high degree of spatiotemporal coherence, a fact reflecting Maxwell’s reciprocity principle. Thus collocated signals seem to furnish a true spatiotemporal sample of transient response to a point impulse of complex structures such as propellers. In view of this fact, three sensors are placed on an installed propeller to collect collocated signals at the blades and hub for damage detection. Preliminary results indicate that abnormality indicators present in the dominant POD mode of the ensembles of collocated signals are related directly to the presence of damage at the tip of a propeller blade.
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ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 28–October 1, 2010
Philadelphia, Pennsylvania, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4416-8
PROCEEDINGS PAPER
Proper Othrogonal Decomposition of Collocated Signals for Detection of Damage in an Aircraft Propeller Available to Purchase
Ioannis Georgiou
Ioannis Georgiou
National Technical University of Athens, Athens, Greece
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Ioannis Georgiou
National Technical University of Athens, Athens, Greece
Paper No:
SMASIS2010-3820, pp. 711-717; 7 pages
Published Online:
April 4, 2011
Citation
Georgiou, I. "Proper Othrogonal Decomposition of Collocated Signals for Detection of Damage in an Aircraft Propeller." Proceedings of the ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2. Philadelphia, Pennsylvania, USA. September 28–October 1, 2010. pp. 711-717. ASME. https://doi.org/10.1115/SMASIS2010-3820
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