Archaeological wood, and waterlogged archaeological wood in particular, are almost always characterised by a modification in the original properties and structure of the wood. Degradation agents can be of different origins (Biological, Chemical, Physical) and they are able to produce a large variability in the degradation of individual pieces, requiring their characterization for a proper conservation. X-ray computed Micro-Tomography (X-ray μCT) is a powerful tool, which provides three-dimensional information on the morphological characteristics of materials. Contrary to other analysis, it gives a full insight of the inner structure of the material, in a totally nondestructive way and without requiring a specific sample preparation. In this study the measurements were performed on archaeological and recent wood samples; its main aims were: - to obtain two- and three- dimensional characterization of archaeological wood in order to evaluate if X-ray μCT can be a powerful tool for the investigation of anatomical features of wood; - to obtain a quantitative description of the level of degradation by measuring the linear attenuation coefficient and material density. The experiments were carried out at the SYRMEP beam line of the Elettra synchrotron light source at Trieste (Italy) and at TomoLab, a new X ray micro-focus generator located at the same Elettra site.
Synchrotron Radiation Micro-tomography:a non Destructive tool for the Characterization of Archaeological Wood / D.Dreossi; S.Favretto; M.Fioravanti; L.Mancini; L.Rigon; N.Sodini;G.Tromba; F. Zanini. - STAMPA. - (2009), pp. 34-39. (Intervento presentato al convegno COST IE0601 International Conference on Wood Science for Conservation of Cultural Heritage. tenutosi a Florence nel 8-10 Ottobre 2007).
Synchrotron Radiation Micro-tomography:a non Destructive tool for the Characterization of Archaeological Wood
FIORAVANTI, MARCO;
2009
Abstract
Archaeological wood, and waterlogged archaeological wood in particular, are almost always characterised by a modification in the original properties and structure of the wood. Degradation agents can be of different origins (Biological, Chemical, Physical) and they are able to produce a large variability in the degradation of individual pieces, requiring their characterization for a proper conservation. X-ray computed Micro-Tomography (X-ray μCT) is a powerful tool, which provides three-dimensional information on the morphological characteristics of materials. Contrary to other analysis, it gives a full insight of the inner structure of the material, in a totally nondestructive way and without requiring a specific sample preparation. In this study the measurements were performed on archaeological and recent wood samples; its main aims were: - to obtain two- and three- dimensional characterization of archaeological wood in order to evaluate if X-ray μCT can be a powerful tool for the investigation of anatomical features of wood; - to obtain a quantitative description of the level of degradation by measuring the linear attenuation coefficient and material density. The experiments were carried out at the SYRMEP beam line of the Elettra synchrotron light source at Trieste (Italy) and at TomoLab, a new X ray micro-focus generator located at the same Elettra site.File | Dimensione | Formato | |
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