Effects of Seasonal Growth Rings on the Microwave Measurement of Wood

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International Journal on Smart Sensing and Intelligent Systems

Professor Subhas Chandra Mukhopadhyay

Exeley Inc. (New York)

Subject: Computational Science & Engineering , Engineering, Electrical & Electronic

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VOLUME 7 , ISSUE 5 (December 2014) > List of articles

Special issue ICST 2014

Effects of Seasonal Growth Rings on the Microwave Measurement of Wood

W.S. Holmes * / M. Bogosanović / G. Emms / S.C. Mukhopadhyay

Keywords : microwave; non-destructive testing; free-space transmission measurement; wood

Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 7, Issue 5, Pages 1-6, DOI: https://doi.org/10.21307/ijssis-2019-116

License : (CC BY-NC-ND 4.0)

Published Online: 15-February-2020

ARTICLE

ABSTRACT

In order to determine more accurate indicators of wood structure obtained by microwave sensing and improve our understanding of plane wave propagation through this complex material, we have undertaken a permittivity survey and  experimentally investigated scattering of a plane wave, measuring its transmission over two non-parallel surfaces of a rectangular lumber sample. This novel non-destructive testing techn-ique offers results which may significantly contribute in a more accurate propagation modeling and industrial wood quality testing.

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REFERENCES

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[2] G. Torgovnikov, “Dielectric Properties of wood and wood based materials”, Springer-Verlag, Germany, 1993

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[9] D.K. Ghodgaonkar, V.V. Varadan and V.K. Varadan, “A Free-space Method for Measurement of Dielectric Constants and Loss Tangents at Microwave Frequencies”,  IEEE Trans. on Instrum. and Meas., vol.37(3), June 1989, pp. 789 – 793.

[10] N. Lundgren, O. Hagman, and J. Johansson, “Predicting moisture content and density distribution of Scots pine by microwave scanning of sawn timber II: evaluation of models generated on a pixel level”, Journal of Wood Science, vol. 52(1), Springer, Japan, 2006, pp. 39-43.

[11] M. Schinker, N. Hansen, H. Spiecker, “High-frequency densitometry – a new method for the rapid evaluation of wood density variations”, IAWA Journal, vol.24(3), 2003, pp.231-239.

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