Radome Inspection with Terahertz Waves

Speaker:
Friederich, Fabian; Fraunhofer ITWM; Germany

Authors:
Friederich, F.; Fraunhofer Institute for Industrial Mathematics ITWM; Germany
May, K.H.; Fraunhofer Institute for Industrial Mathematics ITWM; Germany
Baccouche, B.; Fraunhofer Institute for Industrial Mathematics ITWM; Germany
Matheis, C.; Fraunhofer Institute for Industrial Mathematics ITWM; Germany
Bauer, M.; Fraunhofer Institute for Industrial Mathematics ITWM; Germany
Jonuscheit, J.; Fraunhofer Institute for Industrial Mathematics ITWM; Germany
Moor, M.; Meggitt Polymers & Composites; United Kingdom
Denman, D.; Meggitt Polymers & Composites; United Kingdom
Bramble, J.; Meggitt Polymers & Composites; United Kingdom
Savage, N.; Meggitt Polymers & Composites; United Kingdom

ID: ECNDT-0633-2018

We report on the realization of a 3D terahertz imaging system for industrial radome inspection. The system has been designed to be operated within a machining center for radome manufacturing. In order to provide the required flexibility in respect to image resolution and penetration depth, we developed a system, which combines two frequency-modulated continuous-wave terahertz sensing units, operating in adjacent frequency ranges, from 70 to 110 GHz and from 110 to 170 GHz, respectively. The collinear arrangement of the
measurement paths does not only allow to simultaneously gather terahertz images in two different frequency ranges, but also to
perform data fusion for additional images with increased depth resolution.