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

doi:10.3390/s25092928

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

GALLUZZI, Francesca
Archéosciences Bordeaux

CHAPOULIE, Rémy
Archéosciences Bordeaux

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Sensors. 2025, vol. 25, n° 9, p. 2928

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This study investigates the application of terahertz frequency-modulated continuous-wave (FMCW) imaging for the non-destructive inspection of a historical enamel plate, using both reflection and transmission modes. A 300 GHz FMCW radar system was employed to capture high-resolution images of the plate's internal and surface structures. Through optimized data acquisition and processing, the system successfully revealed subsurface features such as fractures, as well as surface-level textural variations linked to the decorative glazes. Although pigment differentiation remains a challenge, contrast variations observed in THz images suggest correlations with material composition. The results highlight the potential of FMCW terahertz imaging as a compact, rapid, and noncontact diagnostic tool for cultural heritage analysis. Its practicality and adaptability make it particularly suitable for in situ inspections in museums or restoration contexts.< Leer menos

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millimeter wave radar imaging

terahertz imaging

thickness

fracture detection

non-destructive testing

ceramic

earthenware

polychrome glazes

pigment

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Terahertz Frequency-Modulated Continuous-Wave Inspection of an Ancient Enamel Plate

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