Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13891
Title: Development of a fringe projection method for static and dynamic measurement
Authors: WU TAO
Keywords: Fringe projection, fast Fourier transform (FFT), digital image correlation (DIC), CCD sensor, white light source (WLS), 3-D displacement
Issue Date: 8-May-2004
Source: WU TAO (2004-05-08). Development of a fringe projection method for static and dynamic measurement. ScholarBank@NUS Repository.
Abstract: This thesis is mainly concerned with a fringe projection method and its application to static and dynamic measurement. The theory for the fringe projection method and its application to measurement of static and dynamic components are developed. Since dynamic measurement with a short exposure is intrinsically light intensity starved, insufficiency in light intensity often introduces underexposure problem. To overcome this problem, a simple method is proposed and an increase in the measurement range of up to a factor of 6 is achieved. Since the proposed method is mainly based on investigation of the out-of-plane displacement of the test surface, it is observed that the unexpected in-plane displacement has adverse effects on the experimental results. A novel method combining fringe projection and digital image correlation (DIC) technique is developed to enable 3-D displacement measurement using only one camera.
URI: http://scholarbank.nus.edu.sg/handle/10635/13891
Appears in Collections:Master's Theses (Open)

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