Multipoint laser vibrometer for modal analysis
Experimental modal analysis of multifrequency vibration requires a measurement system with appropriate temporal and spatial resolution to recover the mode shapes. To fully understand the vibration it is necessary to be able to measure not only the vibration amplitude but also the vibration phase. We...
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| Veröffentlicht in: | Applied Optics 2007-06, Vol.46 (16), p.3126-3132 |
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| container_end_page | 3132 |
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| container_issue | 16 |
| container_start_page | 3126 |
| container_title | Applied Optics |
| container_volume | 46 |
| creator | MacPherson, William N Reeves, Mark Towers, David P Moore, Andrew J Jones, Julian D C Dale, Martin Edwards, Craig |
| description | Experimental modal analysis of multifrequency vibration requires a measurement system with appropriate temporal and spatial resolution to recover the mode shapes. To fully understand the vibration it is necessary to be able to measure not only the vibration amplitude but also the vibration phase. We describe a multipoint laser vibrometer that is capable of high spatial and temporal resolution with simultaneous measurement of 256 points along a line at up to 80 kHz. The multipoint vibrometer is demonstrated by recovering modal vibration data from a simple test object subject to transient excitation. A practical application is presented in which the vibrometer is used to measure vibration on a squealing rotating disk brake. |
| doi_str_mv | 10.1364/AO.46.003126 |
| format | Article |
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| identifier | ISSN: 1559-128X |
| ispartof | Applied Optics, 2007-06, Vol.46 (16), p.3126-3132 |
| issn | 1559-128X 0003-6935 1539-4522 |
| language | eng |
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| source | Alma/SFX Local Collection; Optica Publishing Group Journals |
| subjects | AMPLITUDES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS INTERFEROMETRY KHZ RANGE 01-100 LASERS MEASURING METHODS SPATIAL RESOLUTION |
| title | Multipoint laser vibrometer for modal analysis |
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