A Numerical Simulation Of The Quasi-Heterodyne Technique For Double-Pulsed Holographic Vibration Measurements

V. B. McKee; R. J. Parker

doi:10.1117/12.952929

31 July 1989 A Numerical Simulation Of The Quasi-Heterodyne Technique For Double-Pulsed Holographic Vibration Measurements

V. B. McKee, R. J. Parker

Author Affiliations +

Proceedings Volume 1084, Stress and Vibration: Recent Developments in Industrial Measurement and Analysis; (1989) https://doi.org/10.1117/12.952929
Event: Sira/Stress and Vibration: Recent Developments in Measurement and Analysis, 1989, London, United Kingdom

Abstract

Double-pulsed holography is an established technique in which the interference pattern between two holographic images shows a fringe pattern which is representative of a vibrating object's response shape. The technique has many industrial applications, a number of which would benefit from an accurate and reliable means of converting the fringe information into numeric data. By the use of a seperate reference beam for each of the measurement pulses it is possible to apply the Quasi-heterodyne technique, also known as fringe-shifting, to convert the fringe information directly into displacement information. This paper demonstrates a numerical simulation of the Quasi-heterodyne process and its use to investigate the error sources which may be present in a real optical system.

Citation Download Citation

V. B. McKee and R. J. Parker "A Numerical Simulation Of The Quasi-Heterodyne Technique For Double-Pulsed Holographic Vibration Measurements", Proc. SPIE 1084, Stress and Vibration: Recent Developments in Industrial Measurement and Analysis, (31 July 1989); https://doi.org/10.1117/12.952929

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