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Computed tomography with X-rays and fast neutrons for restoration of wooden artwork

  • The objects of this investigation were sculptures taken from a ca. three hundred years old baroque epitaph of a church in Tonning, a town in Northern Germany. Around 1900 it was found in a disastrous state heavily damaged by wood-worm. At that time, the whole artwork was treated with the tar extract carbolineum as a remedy. Nowadays, this substance has been identified as carcinogenic, and its presence can be perceived by its stench and visually at certain spots on the surface where it has penetrated the covering paint. A gold-painted sculpture of a massive wooden skull was interrogated with X-rays and fast neutrons to investigate the internal distribution of the carbolineum. The X-ray tomography, with its excellent spatial resolution revealed galleries left over from the worm infestation in the outer areas and cracks in the central region. The golden color coating appeared as a thick and dense layer. In comparison the tomography with fast neutrons, though being of lower resolutionThe objects of this investigation were sculptures taken from a ca. three hundred years old baroque epitaph of a church in Tonning, a town in Northern Germany. Around 1900 it was found in a disastrous state heavily damaged by wood-worm. At that time, the whole artwork was treated with the tar extract carbolineum as a remedy. Nowadays, this substance has been identified as carcinogenic, and its presence can be perceived by its stench and visually at certain spots on the surface where it has penetrated the covering paint. A gold-painted sculpture of a massive wooden skull was interrogated with X-rays and fast neutrons to investigate the internal distribution of the carbolineum. The X-ray tomography, with its excellent spatial resolution revealed galleries left over from the worm infestation in the outer areas and cracks in the central region. The golden color coating appeared as a thick and dense layer. In comparison the tomography with fast neutrons, though being of lower resolution and yet unresolved artefacts revealed sections of slightly different densities in the bulk of the wood. These differences we attribute to the differences in the distribution of the impregnant in the wood, visible due to its higher hydrogen content making it less transparent for neutrons.zeige mehrzeige weniger

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Metadaten
Autor*innen:Kurt Osterloh, Carsten BellonORCiD, Stefan Hohendorf, Sanjeevareddy Kolkoori, Norma Wrobel, A. Nusser, M. Freitag, T. Bücherl, D. Bar, I. Mor, N. Tamin, R. Weiss-Babai, B. Bromberger, V. Dangendorf, K. Tittelmeier
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Physics Procedia
Jahr der Erstveröffentlichung:2015
Veröffentlichende Institution:Bundesanstalt für Materialforschung und -prüfung (BAM)
Verlag:Elsevier B.V.
Verlagsort:Amsterdam
Jahrgang/Band:69
Erste Seite:472
Letzte Seite:477
Freie Schlagwörter:Computed tomography; Conservation of wooden artwork; Neutron radiology
Veranstaltung:WCNR-10 - 10th World conference on neutron radiography
Veranstaltungsort:Grindelwald, Switzerland
Beginndatum der Veranstaltung:05.10.2014
Enddatum der Veranstaltung:10.10.2014
DOI:10.1016/j.phpro.2015.07.066
URN:urn:nbn:de:kobv:b43-323050
ISSN:1875-3892
Verfügbarkeit des Dokuments:Datei für die Öffentlichkeit verfügbar ("Open Access")
Lizenz (Deutsch):License LogoCreative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:18.12.2014
Schriftenreihen ohne Nummerierung:Wissenschaftliche Artikel der BAM
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