Terahertz is a powerful technique allowing non destructive test of composite materials. Both time and frequency domain, pulsed and FMCW can be used to inspect composite materials from the aeronautics industry. Several defects like crack, insertions or debonds can be revealed.
Hybrid optical bench for Innovative Teaching (HOBIT) projet combine augmented reality technology and optics learning.
Imaging of cancer with far field terahertz pulsed imaging system and near field integrated sensor.
Terahertz time domain imaging, FMCW and spectroscopy are useful tools for art restorer to inspect paintings and other cultural. Thanks to the different terahertz equipments present on the terahertz platform in Bordeaux, we have set up collaborations with art restorers and researchers working on the analysis of works of art with terahertz. This article presents different results obtained with our systems.
Pulse time domain imaging
Time domain imaging is used for art painting analysis since several years.
FMCW fast imaging
Flowchart and different approaches
Guillet, J. P., Roux, M., Wang, K., Ma, X., Fauquet, F., Balacey, H. & Mounaix, P. (2017). Art Painting Diagnostic Before Restoration with Terahertz and Millimeter Waves. Journal of Infrared, Millimeter, and Terahertz Waves, 38(4), 369-379.