Non destructive test of composite materials

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.

  1. Ospald, F. et al (2014). Aeronautics composite material inspection with a terahertz time-domain spectroscopy system. Optical Engineering, 53(3), 031208-031208.

Terahertz for art restorers

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

Read more

https://link.springer.com/article/10.1007%2Fs10762-017-0358-1

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.