FAUQUET, Frédéric; GALLUZZI, Francesca; TADAY, Philip; CHAPOULIE, Rémy; MOUNIER, Aurélie; BEN AMARA, Ayed; MOUNAIX, Patrick

doi:10.1038/s41598-024-69697-6

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http://creativecommons.org/licenses/by-nc-nd/

FAUQUET, Frédéric
Laboratoire de l'intégration, du matériau au système [IMS]

GALLUZZI, Francesca
Archéosciences Bordeaux

TADAY, Philip
TeraView Ltd.

Langue

Article de revue

Ce document a été publié dans

ISSI Scientific Reports Series. 2024-08-20, vol. 14, p. 19248

Springer

Résumé en anglais

In this paper, we present the potential of Terahertz Time-Domain Imaging (THz-TDI) as a tool to perform non-invasive 3D analysis of an ancient enamel plate made by Longwy Company in France. The THz data collected in the reflection mode were processed using noise filtering procedures and an advanced imaging approach. The results validate the capability to identify glaze layers and the thickness of ceramic materials. To characterize the nature of the pigments, we also go with X-ray images, visible near-infrared hyperspectral imaging spectroscopy, and p-XRF (portable X-ray fluorescence) to qualitatively and quantitively identify the materials used. The information obtained made it possible to better understand the nature of the decoration chromogens and, thus, to determine the color palette of the artists who produced this type of decorative object. We also establish the efficiency of a focus, Z-tracker, which makes it possible to perform THz imaging on non-flat samples and to attenuate artifacts obtained with a short focus lens. Then, 3D images are extracted and generated, providing a real vision of the 3D object. We also report the evaluation of the internal damage state based on the detection of fractures.< Réduire

Mots clés en anglais

Earthenware

Polychrome glazes

Pigment

Ceramics

p-XRF

Hyperspectral imaging

Infrared false color

Terahertz imaging

Thickness

Fracture

Non-destructive analyses

URI

https://oskar-bordeaux.fr/handle/20.500.12278/201300

DOI

http://dx.doi.org/10.1038/s41598-024-69697-6

Project ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Archéosciences Bordeaux - UMR 6034