1 June 2003 New method for measuring dynamic response of small components by fringe projection
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Abstract
We describe the use of an optical fringe projection method to measure the dynamic response of small components. In this method, sinusoidal fringes are projected on a small component using a programmable liquid crystal display (LCD) projector and a long-working-distance microscope (LDM). The image of the fringe pattern is captured by another LDM and a high-speed camera and subsequently processed by the fast Fourier transform (FFT) technique. A simple procedure is described that enables calibration of the optical setup for subsequent amplitude and frequency measurement of small vibrating components. A method that enhances the detection range of the system is also included.
© (2003) Society of Photo-Optical Instrumentation Engineers (SPIE)
Cho Jui Tay, Cho Jui Tay, Chenggen Quan, Chenggen Quan, Huai Min Shang, Huai Min Shang, T. Wu, T. Wu, Shihua Wang, Shihua Wang, } "New method for measuring dynamic response of small components by fringe projection," Optical Engineering 42(6), (1 June 2003). https://doi.org/10.1117/1.1570824 . Submission:
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