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Pulsed THZ Interrogation of Sofi With Knit Lines in 2D
NORTH CAROLINA STATE UNIV AT RALEIGH CENTER FOR RESEARCH IN SCIENTIFIC COMPUTATION
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This paper examines the scattering effect of knit lines and voids in SOFI through simulations of THz interrogation at normal and non-normal angles of incidence and using focused and non-focused single-cycle plane waves. We model the electromagnetic field using the TE mode of the 2D Maxwells equations reduced to a wave equation, which are then solved with a finite-element time-domain method. The knit lines are modeled by changing the dielectric constant.
APPROVED FOR PUBLIC RELEASE