3D-µCT reveals the work processes of cast plaster statues, their internal structures, damages, and restorations

Aurelia Badde; Bernhard Illerhaus

doi:10.1117/12.611820

12 August 2005 3D-μCT reveals the work processes of cast plaster statues, their internal structures, damages, and restorations

Aurelia Badde, Bernhard Illerhaus

Author Affiliations +

Proceedings Volume 5857, Optical Methods for Arts and Archaeology; 58570U (2005) https://doi.org/10.1117/12.611820
Event: Optical Metrology, 2005, Munich, Germany

Abstract

Cast plaster dries with different densities depending on the surrounding media. Liquid plaster filled into a lubricated casting mould will acquire a surface boundary of high density, once set. The second and third cast layers into the still moist form will dry to a lower density. Later additions of plaster, due to sculptural reworking and restorative measures, will also have discernible densities. With computerized tomography (CT) the density in each volume element can be measured. With 3D - μCT the total body of a sculpture can be scanned to a high spatial resolution. Cracks within and cuts through the original cast become visible along with internal structures and armouring. The results from two studies on plaster statues (by Christian Daniel Rauch and Honoré Daumier), done in support of the conservation process as well in the intent of revealing a relative chronology within a series, are presented and placed into the art-historical context.

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Aurelia Badde and Bernhard Illerhaus "3D-μCT reveals the work processes of cast plaster statues, their internal structures, damages, and restorations", Proc. SPIE 5857, Optical Methods for Arts and Archaeology, 58570U (12 August 2005); https://doi.org/10.1117/12.611820

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