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Digital radiography (DR) and imaging analysis for evaluating the penetration and distribution of organic substances used in wood conservation
Authors:Joanna Sobczyk  Piotr Frączek  Michał Obarzanowski  Julio M. del Hoyo-Meléndez  Łukasz Bratasz
Affiliation:1. Laboratory of Analysis and Non-Destructive Investigation of Heritage Objects, National Museum in Krakow, ul. Pi?sudskiego 14, 31-109, Kraków, Poland
2. Cultural Heritage Research Group, Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239, Kraków, Poland
Abstract:Consolidation treatments are commonly employed in museum conservation studios for treating biologically deteriorated wooden cultural heritage objects. Impregnation using either a solvent/resin or a polymerizing system is an example of such an intervention, which is often difficult to describe in terms of its behavior within the object’s structure. A new simple method has been devised to evaluate the effectiveness of these impregnation treatments in terms of spatial distribution of consolidant solution. A combination of digital radiography and imaging analysis has permitted to evaluate the degree of penetration of a consolidant and to determine its location within the artifact by studying the X-ray images taken before, during, and after treatment. The adequacy of polymer solutions or their effectiveness as wood consolidants is properties which are often difficult to investigate due to limited visual access to the interior of the object. The proposed method provides an alternative way of studying these parameters through analysis of X-ray attenuation recorded on two images: taken before and after the conservation treatment. The resulting image is then converted into a two-dimensional map of consolidation agent within the object using a straightforward calibration procedure.
Keywords:
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