Quantitative evaluation of vibration information

Wen Zheng

doi:10.1117/12.145529

28 May 1993 Quantitative evaluation of vibration information

Wen Zheng

Proceedings Volume 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing; (1993) https://doi.org/10.1117/12.145529
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

A fringe evaluation system for a vibration measurement is presented, which is based on the phase-stepping technique in stroboscopic double-exposure holographic interferometry. Vibration amplitude and bias deformation distributions can be derived directly from the phase- stepped patterns. Phase errors caused by the time integration during light pulses are investigated, and the selection of optimum system parameters is discussed. Digital image processing techniques are used to improve the signal-to-noise ratio in fringe patterns and provide high quality phase maps. Experimental results with out-of-plane resonant vibration objects are presented.

Citation Download Citation

Wen Zheng "Quantitative evaluation of vibration information", Proc. SPIE 1821, Industrial Applications of Optical Inspection, Metrology, and Sensing, (28 May 1993); https://doi.org/10.1117/12.145529

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