Recent developments and applications of laser Doppler vibrometry to cultural heritage conservation

The scanning laser Doppler vibrometer (SLDV), is an optical instrument that may accurately measure point-by-point surface velocities using interferometric techniques and a couple of galvanometric driven mirrors steering the laser beam. The application of SLDV to the problem of the diagnostics of monuments and many other types of artworks, is based on the well established principle that it is possible to evaluate the structural state of an object from the examination of its vibrations