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Title: Optical measurement of Young's modulus of a micro-beam
Authors: Tay, C.J. 
Wang, S.H. 
Quan, C. 
Shang, H.M. 
Issue Date: Jul-2000
Source: Tay, C.J., Wang, S.H., Quan, C., Shang, H.M. (2000-07). Optical measurement of Young's modulus of a micro-beam. Optics and Laser Technology 32 (5) : 329-333. ScholarBank@NUS Repository.
Abstract: This paper presents an optical method based on the interference of light beams of equal path difference for the measurement of the Young's modulus of a micro-beam. An optical wedge which consists of an optical plate and a micro-beam which forms part of a micro-accelerometer is illuminated by a collimated monochromatic sodium light beam. Loading on the micro-beam is accomplished by a loading-pin mounted on a three-axis translation stage and the resulting interference fringe pattern is observed using a CCD camera connected to a computer. Loadings are recorded using a high-sensitive load cell which measures loads of up to 200 g with a resolution of 0.01 g. Test results conducted on micro-beams of different sizes show good repeatability and comparison of the experimental results with theory shows good agreement.
Source Title: Optics and Laser Technology
ISSN: 00303992
DOI: 10.1016/S0030-3992(00)00075-X
Appears in Collections:Staff Publications

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