Investigating the use of multi-point coupling for single-sensor bearing estimation in one direction
| Autor: | Americo G. Woolard, Austin A. Phoenix, Pablo A. Tarazaga |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Physics Acoustics and Ultrasonics Mechanical Engineering Acoustics Stiffness 02 engineering and technology Impulse (physics) 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Mechanics of Materials 0103 physical sciences medicine medicine.symptom 0210 nano-technology Large diameter Multi point |
| Zdroj: | Journal of Sound and Vibration. 419:33-41 |
| ISSN: | 0022-460X |
| DOI: | 10.1016/j.jsv.2017.12.033 |
| Popis: | Bearing estimation of radially propagating symmetric waves in solid structures typically requires a minimum of two sensors. As a test specimen, this research investigates the use of multi-point coupling to provide directional inference using a single-sensor. By this provision, the number of sensors required for localization can be reduced. A finite-element model of a beam is constructed with a symmetrically placed bipod that has asymmetric joint-stiffness properties. Impulse loading is applied at different points along the beam, and measurements are taken from the apex of the bipod. A technique is developed to determine the direction-of-arrival of the propagating wave. The accuracy when using the bipod with the developed technique is compared against results gathered without the bipod and measuring from an asymmetric location along the beam. The results show 92% accuracy when the bipod is used, compared to 75% when measuring without the bipod from an asymmetric location. A geometry investigation finds the best accuracy results when one leg of the bipod has a low stiffness and a large diameter relative to the other leg. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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