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8 September 1994 Application of a laser Doppler vibrometer to nonintrusive diagnostic of frescoes damage
Paolo Castellini, Nicola Paone, Enrico Primo Tomasini
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Proceedings Volume 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1994) https://doi.org/10.1117/12.185335
Event: Vibration Measurements by Laser Techniques: First International Conference, 1994, Ancona, Italy
Abstract
The paper presents the application of a laser Doppler vibrometer as a nonintrusive measurement technique to detect damage of frescoes paintings. Experimental verification is carried on a wall where detachment of the external layer from the inner substrate is artificially introduced. Impulse excitation shows that frequency response functions identify the presence of any damage. Laser beam scanning provides a way to remotely investigate large areas of paintings. Acoustic excitation is also tested; it allows to excite resonant vibrations on detached areas. A measurement procedure is proposed and tested on the experimental wall and on field tests performed on a real fresco inside a church.
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Paolo Castellini, Nicola Paone, and Enrico Primo Tomasini "Application of a laser Doppler vibrometer to nonintrusive diagnostic of frescoes damage", Proc. SPIE 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (8 September 1994); https://doi.org/10.1117/12.185335
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KEYWORDS
Doppler effect
Diagnostics
Acoustics
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