Title :
Transfer matrix method for precise determination of thicknesses in a 150-ply polyethylene composite material
Author :
Norbert Palka;Soufiene Krimi;Frank Ospald;Rene Beigang;Danuta Miedzinska
Author_Institution :
Military University of Technology, Institute of Optoelectronics, 00-908 Warsaw, Poland
Abstract :
The multilayer structure of an ultra-high molecular weight polyethylene composite material was investigated in the terahertz (THz) spectral range by means of time domain spectroscopy (TDS) technique. Such structures consist of many alternating layers of fibres (~150), each being perpendicular to the other and each having a thickness of about 50 μm. A transfer matrix method (TMM) and a time-domain fitting procedure were used to determine thicknesses of all layers of the composite material with high accuracy.
Keywords :
"Polyethylene","Nonhomogeneous media","Time-domain analysis","Refractive index","Composite materials","Reflection","Optical fiber dispersion"
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
Electronic_ISBN :
2162-2035
DOI :
10.1109/IRMMW-THz.2015.7327397
