کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1138413 1489212 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Void detection in foam with knit lines using THz pulse interrogation
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Void detection in foam with knit lines using THz pulse interrogation
چکیده انگلیسی

We model the electromagnetic interrogation of a polyurethane foam using the transverse electric (TE) mode of the two-dimensional (2D) Maxwell’s equations reduced to the wave equation for a fixed frequency in the terahertz (THz) regime. The foam block target contains knit lines which are modeled by modifying the speed of propagation, i.e., by altering the index of refraction. We describe our efforts to estimate the dielectric constant in the knit lines, as well as in the surrounding foam, by use of the classical Clausius–Mossotti equation, assuming only a change in density. We compare the numerical simulations accounting for knit lines to those in which knit lines are neglected, each in the context of modeling reflections of plane waves in foam with voids.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mathematical and Computer Modelling - Volume 44, Issues 9–10, November 2006, Pages 807–815
نویسندگان
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