Title :
Inspection of space shuttle insulation foam defects using a 0.2 THz Gunn diode oscillator
Author :
Zhong, Hua ; Karpowicz, Nicholas ; Xu, Jmgzhou ; Deng, Yanqing ; Ussery, Warren ; Shur, Michael ; Zhang, X.-C.
Author_Institution :
Center for THz Res., Rensselaer Polytech. Inst., Troy, NY, USA
fDate :
27 Sept.-1 Oct. 2004
Abstract :
We report on the detection of space shuttle foam insulation defects with a 0.2 THz Gunn diode oscillator as the illumination source. A pyroelectric camera, a Golay cell, and a silicon beam lead diode are used as detectors. The size and location of the defects are identified and the feasibility of using this imaging system in quality inspection is discussed.
Keywords :
beam-lead devices; fault diagnosis; foams; light sources; pyroelectric detectors; space vehicles; submillimetre wave imaging; 0.2 THz; Golay cell; Gunn diode oscillator; illumination source; imaging system; pyroelectric camera; quality inspection; silicon beam lead diode; space shuttle insulation foam defects detection; Cameras; Diodes; Gunn devices; Inspection; Insulation; Lighting; Oscillators; Pyroelectricity; Silicon; Space shuttles;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422311
