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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Ioannis, T. Georgiou |
| Copyright Year | 2011 |
| Abstract | The present work concerns the study of the experimental Proper Orthogonal Decomposition (POD) modes of three simultaneously acquired ensembles of collocated impulse-induced acceleration signals in a complex multi-beam aluminum structure. The impact-induced locally transverse acceleration of a three-beam structure is measured simultaneously at three fixed points with state-of-the-art piezoelectric sensors. Each ensemble of collocated databases is processed by the POD Transform to find out that it is underlined by strong coherence in space and time manifested by a small number of POD modes. It is found that the unit space modulations of the first-the dominant-POD modes of the three databases of experimental acceleration signals form an orthonormal set. The same is true for their companion unit time modulations. This original result leads to the identification of three normal modes of vibration for the complex beam structure. |
| Starting Page | 917 |
| Ending Page | 925 |
| Page Count | 9 |
| File Format | |
| ISBN | 9780791854938 |
| DOI | 10.1115/IMECE2011-64638 |
| Volume Number | Volume 7: Dynamic Systems and Control; Mechatronics and Intelligent Machines, Parts A and B |
| Conference Proceedings | ASME 2011 International Mechanical Engineering Congress and Exposition |
| Language | English |
| Publisher Date | 2011-11-11 |
| Publisher Place | Denver, Colorado, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Databases Vibration Aluminum Spacetime Signals Sensors Impulse (physics) Principal component analysis |
| Content Type | Text |
| Resource Type | Article |
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