Follow-up of restoration of works of art of the patrimony by infrared thermography

摘要

Infrared thermography is a non-destructive testing technique that affects many areas. This technique of analysis is, forexample, very interesting in the field of restoration and conservation of heritage works. The possibilities of activethermography can help in the early detection of defects in works of art and their characterization. In this work we willdemonstrate that it is possible to detect old restorations in frescoes and murals by flash method. This new possibility offeredby thermography will make it possible, for example, to verify the compatibility of a restoration with the original work,which can prevent the appearance of a defect and may allow the conservator to follow up on restoration. First we will showthe feasibility of this approach on a laboratory specimen containing different types of clogging materials and then presentresults of analysis carried out in situ at one restoration sites that reveal the possibility of locating these restorations but alsoto characterize the pictorial technique used in this one.