Conclusion
This paper has discussed a full field vibrometer based on digital Fresnel holography. The Influence of the pulse width was studied and analytical expressions of amplitude and phase distortion were proposed. As a result, it was demonstrated that amplitude and phase extraction are possible with a cyclic ratio about 1/Δϕ m if maximum vibration amplitude does not exceed Δϕ m . Thus, the use of a moderated cyclic ratio is possible in vibration analysis. Experimental results were presented and exhibit the relevance of digital Fresnel holography in vibrometry. The comparison between time-averaging and stroboscopic measurement confirms the accuracy of the method.
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© 2006 Springer-Verlag Berlin Heidelberg
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Picart, P., Leval, J., Boileau, J.P., Pascal, J.C. (2006). Laser vibrometry using digital Fresnel holography. In: Osten, W. (eds) Fringe 2005. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-29303-5_74
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DOI: https://doi.org/10.1007/3-540-29303-5_74
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-26037-0
Online ISBN: 978-3-540-29303-3
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