CONICET | Buscador de Institutos y Recursos Humanos

The paint-coating is part ofseveral industrial processes, including the automotive industry, architecturalcoatings, machinery and appliances. These paint-coatings must comply with highquality standards, for this reason evaluation techniques from paint-coatingsare in constant development. One important factor from the paint-coatingprocess is the drying, as it has influence on the quality of final results. Inthis work we present an assessment technique based on the optical dynamicspeckle interferometry, this technique allows for the temporal activityevaluation of the paint-coating drying process, providing localized informationfrom drying. This localized information is relevant in order to address thedrying homogeneity, optimal drying, and quality control. The technique reliesin the definition of a new temporal history of the speckle patterns to obtainthe local activity; this information is then clustered to provide a convenientindicative of different drying process stages. The experimental resultspresented were validated using the gravimetric drying curves.