Fauquet Frédéric, Galluzzi Francesca, Chapoulie Rémy, Mounier Aurélie, Ben Amara Ayed, Mounaix Patrick
Institute from Material to System Laboratory, CNRS UMR 5218, Bordeaux INP, Université de. Bordeaux, F-33400 Talence, France.
Archéosciences Bordeaux-UMR 6034 CNRS, Université Bordeaux Montaigne, Domaine Universitaire, F-33607 Pessac, France.
Sensors (Basel). 2025 May 6;25(9):2928. doi: 10.3390/s25092928.
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 non-contact diagnostic tool for cultural heritage analysis. Its practicality and adaptability make it particularly suitable for in situ inspections in museums or restoration contexts.
本研究利用反射和透射模式，研究了太赫兹调频连续波（FMCW）成像在历史搪瓷板无损检测中的应用。采用300 GHz FMCW雷达系统获取该板内部和表面结构的高分辨率图像。通过优化数据采集和处理，该系统成功揭示了诸如裂缝等地下特征，以及与装饰釉料相关的表面纹理变化。尽管颜料区分仍然是一个挑战，但在太赫兹图像中观察到的对比度变化表明与材料成分存在相关性。结果突出了FMCW太赫兹成像作为一种紧凑、快速且非接触式文化遗产分析诊断工具的潜力。其实用性和适应性使其特别适用于博物馆或修复环境中的现场检测。
