Evaluation of Young's modulus of a vibrating beam by optical method

X. J. Kang; Cho Jui Tay; Chenggen Quan; Xiaoyuan He

doi:10.1117/1.1602089

1 October 2003 Evaluation of Young's modulus of a vibrating beam by optical method

X. J. Kang, Cho Jui Tay, Chenggen Quan, Xiaoyuan He

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Optical Engineering, Vol. 42, Issue 10, (October 2003). https://doi.org/10.1117/1.1602089

An optical technique for evaluating Young's modulus of a vibrating cantilever beam is presented. The technique utilizes two charge-coupled device (CCD) cameras to record and process the images of a vibrating beam. Equations relating the natural frequency with the imaging time are obtained, and Young's modulus as a function of the natural frequency is subsequently determined. The Young's modulus values are compared with those obtained using the conventional strain gauge method. The results show good agreement. The proposed technique is relatively simple and could be used to determine the Young's modulus of a wide variety of beam materials.

©(2003) Society of Photo-Optical Instrumentation Engineers (SPIE)

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X. J. Kang, Cho Jui Tay, Chenggen Quan, and Xiaoyuan He "Evaluation of Young's modulus of a vibrating beam by optical method," Optical Engineering 42(10), (1 October 2003). https://doi.org/10.1117/1.1602089

Published: 1 October 2003

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