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Detection of ageing effects in protective structures using THz technologies
Author(s): Sebastian Engelbrecht; Théo Jean; Andreas Klavzar; Jean-Francois Legendre; Stefan Sommer; Bernd M. Fischer
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Paper Abstract

In this work the potential of THz technology to detect ageing effects in modern armor system is studied. First experiments have been done in pure polymers, a key component in modern armor devices. Artificial ageing in thermooxidative environment has been applied to Polyamide 6 and Polyethylene and their THz response has been recorded. It was found that the THz refractive index indeed undergoes significant changes after the thermal treatment. The direction of the changes and the mechanisms causing these changes are highly dependent on the investigated polymer. Afterwards experiments on more representative devices, made from hard aramid, were conducted. An artificial ageing following the NATO standard STANAG 4370 has been applied. The THz refractive index undergoes significant changes, showing the high potential THz technology has to offer in this novel field of application.

Paper Details

Date Published: 1 March 2019
PDF: 9 pages
Proc. SPIE 10917, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII, 1091711 (1 March 2019); doi: 10.1117/12.2509968
Show Author Affiliations
Sebastian Engelbrecht, French-German Research Institute of Saint-Louis (France)
Théo Jean, French-German Research Institute of Saint-Louis (France)
Andreas Klavzar, French-German Research Institute of Saint-Louis (France)
Jean-Francois Legendre, French-German Research Institute of Saint-Louis (France)
Stefan Sommer, Philipps Univ. Marburg (Germany)
Bernd M. Fischer, French-German Research Institute of Saint-Louis (France)


Published in SPIE Proceedings Vol. 10917:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XII
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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