TY - CONF A1 - Beckmann, Jörg A1 - Spranger, Holger A1 - Ewert, Uwe T1 - THz applications for NDT N2 - Electromagnetic waves in the frequency range between 0.1 and 10 THz are described as THz-radiation (T-ray). The ability to penetrate dielectric materials, to operate contactless and to be non-ionizing as well as be-ing insensitive to ambient temperatures makes THz technologies for NDT applications attractive especially where other techniques are not available or less suitable. Today T-rays are applied in non-destructive testing for quality control and condition monitoring issues. The operation is based on the combination of both transmission and/or reflection measurements and specially developed reconstruction procedures. Firstly, THz-TDS measurements will be presented to demonstrate the opportunities for spectroscopy and imaging of polymer materials. A SAFT algorithm and an Optical Layer-Model will be presented and discussed in more detail to demonstrate the opportunities of image reconstruction for visualization of the inner structures of op-tically and far infra-red opaque polymer composites. T2 - 2017 Far East Forum On Nondestructive Evaluation/Testing: New Technology & Application CY - XI'an, China DA - 22.06.2017 KW - THz radiation KW - Terahertz synthetic aperture focusing KW - Thickness measurements KW - Image reconstruction KW - Dielectric materials PY - 2017 AN - OPUS4-40799 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -