Promotor:VANDEWAL, Marijke
Involved staff: Marijke VANDEWAL, Edison CRISTOFANI, Mathias BECQUAERT, Anna BROOK,
Start date:01 Sep 2010
Duration:36 months
Research unit:Laser and Optronics


Modern aircraft structures have to comply with severe requirements: they have to be light as well as safe. These requirements lead to an increased use of composite materials in the aircraft industry. However, new materials also require new techniques in order to inspect aircraft components during production in a non-destructive way.

The primary goal of the DOTNAC project is to develop a safe, contact-free, high resolution, and potentially on-site NDT tool based on terahertz (THz) waves, which will be easy to integrate in industrial facilities, and allowing the detection of surface, subsurface and in-depth defects in a variety of composite materials used in aeronautics. The developed NDT tool will fill in the performance gaps that are still present amongst the established NDT techniques and will therefore be an extremely useful tool in NDT in terms of sensor fusion.


  1. A Brook, E Cristofani, M Vandewal, and J Jonuscheit. In-Depth Detection and Reconstruction Techniques using High-Frequency Microwaves for Non-Destructive Testing on Multi-Layered Composite Materials. In In Proc. of 12th Mediterranean Microwave Symposium (MMS 2012), Istanbul, Turkey, 2012.
  2. E Cristofani, A Brook, M Vandewal, C Matheis, and J Jonuscheit. Synthetic Aperture Processing applied to FMCW THz Imagery. In 5th International Forum on Terahertz Spectroscopy and Imaging, Kaiserslautern, Germany, March 2012.
  3. Edison Cristofani, Marijke Vandewal, Carsten Matheis, and Joachim Jonuscheit. In-depth high-resolution SAR imaging using Omega-k applied to FMCW systems. In IEEE National Radar Conference - Proceedings, pages 0725-0730, 2012.
  4. M. Vandewal, J. Depauw, K. Rombaut, R. Beigang, J. Jonuscheit, P. Mounaix, I. Sáez de Ocáriz, R. Martínez Edo, A. Priegue, and Y. Sternberg. Development and optimization of THz NDT on aeronautics composite multilayered structures. In A. F. Mehdi Anwar, Nibir K. Dhar, Thomas W. Crowe, and Tariq Manzur, editors, Spie, volume 8363, pages 83630Y-83630Y-9, Kaiserslautern, Germany, May 2012.