Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Application of THz radiation to polyethylene composite materials

: Palka, N.; Ospald, F.; Beigang, R.; Miedzinska, D.


Institute of Electrical and Electronics Engineers -IEEE-:
39th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2014. Proceedings. Vol.1 : September 14-19, 2014, The University of Arizona, Tucson, AZ
Piscataway, NJ: IEEE, 2014
ISBN: 978-1-4799-3877-3
ISBN: 978-1-4799-3878-0
International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) <39, 2014, Tucson/Ariz.>
Fraunhofer IPM ()
delamination; polymers; refractive index; stacking faults; terahertz wave spectra

We report on the terahertz analysis of the internal structure of ultra-high molecular weight polyethylene composite materials. The visualisation of interfaces between the perpendicularly arranged plies and the identification of stacking faults is possible because the THz refractive index depends on the orientation of fibres in the plies. Thicknesses of all plies in a composite material were determined. Moreover, the images of a delamination are presented.