Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/6507
| Title: | Identification of antinodes and zero-surface-strain contours of flexural vibration with time-averaged speckle pattern shearing interferometry | Authors: | Wong, WO Chan, TK Leung, TP |
Issue Date: | 1-Jun-1997 | Source: | Applied optics, 1 June 1997, v. 36, no. 16, p. 3776-3784 | Abstract: | A new time-averaged frame subtraction technique is introduced for vibration analysis by digital speckle shearing interferometry. The technique permits the enhancement of fringes by subtracting two Bessel fringe patterns at different forcing levels. Compared with the phase-shift method, this method is more efficient and easier to implement for qualitative vibration measurement, providing a means for fast inspection of plate vibration behavior. It is also capable of tracing contours of zero strain and locating antinodes on vibrating plates. | Keywords: | Antinodes Digital shearography Time-average speckle pattern shearing interferometry Vibration mode shape Zero-strain distribution |
Publisher: | Optical Society of America | Journal: | Applied optics | ISSN: | 0003-6935 | DOI: | 10.1364/AO.36.003776 | Rights: | © 1997 Optical Society of America. This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-16-3776. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
| Appears in Collections: | Journal/Magazine Article |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Wong_Antinodes_Flexural_Vibration.pdf | 4.22 MB | Adobe PDF | View/Open |
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