Dynamic measurement of micro-components by image-plane digital holography
A method for whole-field non-contact measurement of displacement, velocity and acceleration of a vibrating microobject based on digital holographic microscopy is presented. A micro-beam is excited by a fluctuating voltage with a sinusoidal configuration. A series of digital holograms are captured...
| Main Authors: | , , , |
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| פורמט: | Conference Paper |
| שפה: | English |
| יצא לאור: |
2010
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| נושאים: | |
| גישה מקוונת: | https://hdl.handle.net/10356/79244 http://hdl.handle.net/10220/6479 |
| _version_ | 1826119736211013632 |
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| author | Fu, Yu Shi, Hongjian Quan, Chenggen Tay, Cho Jui |
| author2 | International Conference on Experimental Mechanics (2008 : Nanjing, China) |
| author_facet | International Conference on Experimental Mechanics (2008 : Nanjing, China) Fu, Yu Shi, Hongjian Quan, Chenggen Tay, Cho Jui |
| author_sort | Fu, Yu |
| collection | NTU |
| description | A method for whole-field non-contact measurement of displacement, velocity and acceleration of a vibrating microobject
based on digital holographic microscopy is presented. A micro-beam is excited by a fluctuating voltage with a
sinusoidal configuration. A series of digital holograms are captured using a digital holographic microscope with a highspeed
camera. The result of reconstruction is a three dimensional complex-valued matrix with noises. In this paper,
Fourier analysis and windowed Fourier analysis are applied in both the spatial and temporal domains to extract the
kinematic parameters. The instantaneous displacement is obtained by temporal phase unwrapping of the filtered wrapped
phase map, while the velocity and acceleration are evaluated by windowed Fourier analysis along the time axis. The
combination of digital holographic microscopy and temporal Fourier analyses is able to study the vibration without a
phase ambiguity problem, and the instantaneous kinematic parameters on each point are obtained. |
| first_indexed | 2024-10-01T05:05:19Z |
| format | Conference Paper |
| id | ntu-10356/79244 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:05:19Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/792442020-09-26T22:15:25Z Dynamic measurement of micro-components by image-plane digital holography Fu, Yu Shi, Hongjian Quan, Chenggen Tay, Cho Jui International Conference on Experimental Mechanics (2008 : Nanjing, China) Temasek Laboratories DRNTU::Science::Physics::Optics and light A method for whole-field non-contact measurement of displacement, velocity and acceleration of a vibrating microobject based on digital holographic microscopy is presented. A micro-beam is excited by a fluctuating voltage with a sinusoidal configuration. A series of digital holograms are captured using a digital holographic microscope with a highspeed camera. The result of reconstruction is a three dimensional complex-valued matrix with noises. In this paper, Fourier analysis and windowed Fourier analysis are applied in both the spatial and temporal domains to extract the kinematic parameters. The instantaneous displacement is obtained by temporal phase unwrapping of the filtered wrapped phase map, while the velocity and acceleration are evaluated by windowed Fourier analysis along the time axis. The combination of digital holographic microscopy and temporal Fourier analyses is able to study the vibration without a phase ambiguity problem, and the instantaneous kinematic parameters on each point are obtained. Published version 2010-11-26T08:27:41Z 2019-12-06T13:20:40Z 2010-11-26T08:27:41Z 2019-12-06T13:20:40Z 2008 2008 Conference Paper Fu, Y., Shi, H., Quan, C., & Tay, C. J. (2008). Dynamic measurement of micro-components by image-plane digital holography. International Conference on Experimental Mechanics, Nanjing, China, 7375, pp.1-6. https://hdl.handle.net/10356/79244 http://hdl.handle.net/10220/6479 10.1117/12.839036 en Copyright 2009 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. 6 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics::Optics and light Fu, Yu Shi, Hongjian Quan, Chenggen Tay, Cho Jui Dynamic measurement of micro-components by image-plane digital holography |
| title | Dynamic measurement of micro-components by image-plane digital holography |
| title_full | Dynamic measurement of micro-components by image-plane digital holography |
| title_fullStr | Dynamic measurement of micro-components by image-plane digital holography |
| title_full_unstemmed | Dynamic measurement of micro-components by image-plane digital holography |
| title_short | Dynamic measurement of micro-components by image-plane digital holography |
| title_sort | dynamic measurement of micro components by image plane digital holography |
| topic | DRNTU::Science::Physics::Optics and light |
| url | https://hdl.handle.net/10356/79244 http://hdl.handle.net/10220/6479 |
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