Title :
Currents induced in an anatomically based model of a human for exposure to vertically polarized electromagnetic pulses
Author :
Chen, Jin-Yuan ; Gandhi, Om P.
Author_Institution :
Dept. of Electr. Eng., Utah Univ., Salt Lake City, UT, USA
fDate :
1/1/1991 12:00:00 AM
Abstract :
The finite-difference time-domain (FDTD) technique is used to calculate the internal fields and the induced current densities in anatomically based models of a human using 5628 or 45024 cubical cells of dimensions 2.62 and 1.31 cm, respectively. A layer of dielectric constant of εr=4.2 and having a thickness of 2.62 cm is assumed under the feet to simulate a human wearing rubber-soled shoes. The total induced currents for the various sections of the body and the specific absorptions for several organs are given for two representative electromagnetic pulses. The calculated results for the induced currents are in excellent agreement with the data measured for a human subject. The FDTD method is ideally suited for exact representation of the pulse shapes and offers numerical efficiency to allow detailed modeling of the human body and the various organs
Keywords :
biological effects of radiation; electromagnetic pulse; health hazards; safety; 2.62 cm; EMP; FDTD method; anatomically based model; detailed modeling; electromagnetic pulses; exact representation; exposure to vertically polarized electromagnetic pulses; finite-difference time-domain; human body model; human wearing rubber soled shoes simulation; induced current densities; induced currents; internal fields; numerical efficiency; organs; pulse shapes; specific absorptions for several organs; Biological system modeling; Current density; Current measurement; Dielectric constant; EMP radiation effects; Electromagnetic wave absorption; Finite difference methods; Footwear; Humans; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
