Abstract
The paper deals with the deterministic-stochastic model of the human body represented as cylindrical antenna illuminated by a low frequency electric field. Both analytical and numerical (Galerkin-Bubnov scheme of Boundary Element Method) deterministic solutions of the problem are outlined. This contribution introduces the new perspective of the problem: the variability inherent to input parameters, such as the height of the body, the shape of the body, and the conductivity of body tissue, is propagated to the output of interest (induced axial current). The stochastic approach is based on the stochastic collocation (SC) method. Computational examples show the mean trend of both analytically and numerically computed axial current with the confidence margins for different set of input random variables. The results point out the possibility of improving the efficiency in calculation of basic restriction parameter values in electromagnetic dosimetry.
Highlights
The exposure of the human body to electromagnetic fields has always been a kind of controversy, in the last two decades
The present paper aims to implement stochastic modelling to account for the variability of calculated induced current inside the human body due to the uncertain nature of input parameters required for the current assessment, such as the height of a person, the shape of the body, and the corresponding body conductivity, which is the dominant electric parameter of the body at extremely low frequency (ELF)
The paper deals with the application of stochastic collocation (SC) method in modelling the human body exposed to low frequency (LF) fields using the cylindrical antenna representation of the body
Summary
The exposure of the human body to electromagnetic fields has always been a kind of controversy, in the last two decades. The study of the adverse health effects of electromagnetic fields to humans is still a hot topic as there are no clear correlations between the EM field exposure and diseases, such as cancer As it has been already stressed in [1, 2, 5], the key to understanding the coupling of low frequency (LF) fields with the human body is the knowledge of the induced current inside the human body. The nature of the parameters encountered in dosimetry studies is uncertain The influence of their variability has to be taken into account in order to obtain full knowledge about the induced current or electric field inside the human body.
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