Accession Number:

ADA455688

Title:

Pulsed THZ Interrogation of Sofi With Knit Lines in 2D

Descriptive Note:

Corporate Author:

NORTH CAROLINA STATE UNIV AT RALEIGH CENTER FOR RESEARCH IN SCIENTIFIC COMPUTATION

Personal Author(s):

• Banks, H. T.
• Gibson, N. L.
• Winfree, W. P.

Report Date:

2006-01-01

Pagination or Media Count:

16.0

Abstract:

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.

Descriptors:

• *ACCURACY
• *ANGLE OF INCIDENCE
• ELECTROMAGNETIC FIELDS
• SCATTERING
• MODELS
• ATTENUATION
• TIME DOMAIN
• MAXWELLS EQUATIONS
• DIELECTRIC PROPERTIES
• TWO DIMENSIONAL
• FINITE ELEMENT ANALYSIS

Subject Categories:

• Atmospheric Physics
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE