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Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image
  • Original Article
  • Open Access

Finite element modeling (FEM) simulation of interactions between wood and microwaves

  • 1,
  • 2Email author,
  • 1 and
  • 2
Journal of Wood ScienceOfficial Journal of the Japan Wood Research Society200652:794

https://doi.org/10.1007/s10086-005-0794-8

  • Received: 4 April 2005
  • Accepted: 11 November 2005
  • Published:

Abstract

The aim of this study was to use finite element modeling (FEM) as a tool to analyze microwave scattering in wood and to verify the model by measurements with a microwave scanner. A medical computed tomography scanner was used to measure distribution of density and moisture content in a piece of Scots pine (Pinus sylvestris). Dielectric properties were calculated from measured values for cross sections from the piece and used in the model. Images describing the distribution of the electric field and phase shift were obtained from the FEM simulation. The model was verified by measurements with a scanner based on a microwave sensor. The results show that simulated values correspond well to measured values. Furthermore, discontinuities in the material caused scattering in both the measured and the simulated values. The greater the discontinuity in the material, the greater was the need for computational power in the simulation.

Key words

  • Microwave scanning
  • Wood
  • Dielectric properties
  • Modulated scattering technique
  • Finite element modeling

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