Title :
Impact damage analysis of composite materials with a mm-wave synthetic aperture radar
Author :
Nezadal, Martin ; Schur, Jan ; Schmidt, Lorenz-Peter
Author_Institution :
Lehrstuhl fur Hochfrequenztech., Friedrich-Alexander Univ. Erlangen-Nurnberg, Erlangen, Germany
Abstract :
This paper presents investigations on impact damages on carbon and glass fibre reinforced plastics with a synthetic aperture radar in the frequency range of the W-Band (75 to 110 GHz) and J-Band (220 to 325 GHz). It was possible to detect the high energy impacts in the carbon fibre samples due to their phase delay in both bands. With the glass fibre samples it was also possible to detect changes in magnitude besides the phase delay. The three dimensional image reconstruction also revealed the damages beneath the surface.
Keywords :
carbon fibre reinforced composites; delays; glass fibre reinforced plastics; image reconstruction; millimetre wave detectors; millimetre wave materials; millimetre wave radar; radar imaging; synthetic aperture radar; 3D image reconstruction; J-Band; W-Band; carbon fibre reinforced plastics; composite material; damage detection; frequency 220 GHz to 325 GHz; frequency 75 GHz to 110 GHz; glass fibre reinforced plastics; glass fibre samples; impact damage analysis; mm wave synthetic aperture radar; phase delay; Carbon; Composite materials; Educational institutions; Phase measurement; Synthetic aperture radar; Visualization;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665772
