26 April 2010 Portable video rate time domain terahertz line imager for security and aerospace nondestructive examination
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Abstract
A portable video rate time-domain terahertz (TD-THz) reflection line-scanner suitable for aerospace destructive examination (NDE) and security inspection is described. The imager scans a line 6 inches wide and collects a TD-THz cross-sectional "B-scan" of the sub-surface structure at rates up to 30 Hz. The imager is hand-held. By rolling the scanner over surface, a radiographic two dimensional "C-Scan" image can be stitched together from the individual lines at a rate of 1-4 inches per second (depending on desired resolution). The case is 8.7 in. wide (12.9 in. with wheels), 12.5 in. long, and 7.9 in. high. The weight is approximately 11 lbs. Example images taken with the scanner of radome THz NDE are shown.
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David Zimdars, David Zimdars, G. Fichter, G. Fichter, C. Megdanoff, C. Megdanoff, M. Murdock, M. Murdock, Irl Duling, Irl Duling, Jeffrey White, Jeffrey White, S. L. Williamson, S. L. Williamson, "Portable video rate time domain terahertz line imager for security and aerospace nondestructive examination", Proc. SPIE 7671, Terahertz Physics, Devices, and Systems IV: Advanced Applications in Industry and Defense, 76710K (26 April 2010); doi: 10.1117/12.850143; https://doi.org/10.1117/12.850143
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