Determination of Moisture Content in Synthetic Moulding Sand on the Grounds of Relative Permittivity Measurement

• Autorzy: Nowak D. , Gal B. , Granat K. , Jaworski G. , Więcławek R.

Identyfikatory

DOI

10.1515/amm-2017-0322

• Języki publikacji: EN

Abstrakty

EN

The presented research was aimed at searching for an exact and effective method of determining moisture content in traditional moulding sands. By measuring resonance frequency and quality factor of a waveguide resonance cavity, relative permittivity was determined for different synthetic moulding sands. Analysis of the presented results confirms a linear relation between relative permittivity values and moisture content values in the selected traditional moulding sands. The obtained linear relationship can be used as a reference characteristic for evaluation of humidity of moulding sand.

Słowa kluczowe

EN

moisture content; moulding sands; relative permittivity; microwaves

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 4
• Strony: 2189--2192
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr., wzory

Twórcy

autor

Nowak D.

• Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Gal B.

• Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Granat K.

• Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Jaworski G.

• Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Więcławek R.

• Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

• [1] S. M. Dobosz, Water in moulding and core sands, 2006 Publishing House Akapit, Kraków.
• [2] L. Lewandowski, Materials for casting moulds, 1997 Publishing House Akapit, Kraków.
• [3] J. Wang, T. Schmugge, D. Williams, Dielectric constants of soils at microwave frequencies-II, National Aeronautics and Space Administration, NASA Tech. Pap. 1238, May 1978.
• [4] J. E. Hipp, Soil electromagnetic parameters as a function of frequency, soil density and soil moisture, Proc. IEEE, 62, 98-103 (1974).
• [5] G. P. de Loor, Dielectric properties of heterogeneous mixtures containing water, J. Microwave Power 3, 67-73 (1968).
• [6] C. Liu, L. Zhang, J. Peng, C. Srinivasakannan, B. Liu, H. Xia, J. Zhou, L. Xu, Temperature and moisture dependence of the dielectric properties of silica sand, J. Microwave Power Ee. 47 (3), 199-209 (2013).
• [7] X. Shang, J. Chen, W. Zhang, J. Peng, H. Chen, S. Guo, G. Chen, Dimension Optimization for Silica Sand Based on the Analysis of Dynamic Absorption Efficiency in Microwave, Dry. Technol. 32, 1608-1613 (2014).
• [8] L. M. Dudley, S. Bialkowski, D. Or, C. Junkermeier, Low frequency impedance behavior of montmorillonite suspensions, Soil Sci. Soc. Amer. J. 67 (2), 518-526 (2003).
• [9] A. Revil, Effective conductivity and permittivity of unsaturated porous materials in the frequency range 1 mHz–1 GHz, Water Resources Res. 49 (1), 306-327 (2013).
• [10] T. C. Baum, K. Ghorbani, Measurements on the Effects of Moisture on the Complex Permittivity of High Temperature Ash, Microwave Theory and Techniques IEEE Transactionson 64, 607-615 (2016).
• [11] P. W. Rosenkranz, A model for the complex dielectric constant of supercooled liquid water at microwave frequencies, IEEE Trans. Geosci. Remote Sens. 53 (3), 1387-1393 (2015).
• [12] R. Drożdzak, K. Twardowski, Permittivity of porous media - factors affecting its variability, Drilling Oil Gas 27, 1-2 (2010).
• [13] M. Lisowski, Measurements of resistivity and permittivity of solid dielectrics, 2004 Publishing House of Wrocław University of Technology, Wrocław.
• [14] M. Holtzer, A. Bobrowski, B. Grabowska, Montmorillonite: a comparison of methods for its determination in foundry bentonites, Metalurgija 50 (2), 119-122 (2011).
• [15] D. Nowak, K. Granat, B. Opyd, Examination and analysis of influence of compaction degree on dielectric properties of moulding sand components, Metalurgija 54 (2), 353-356 (2015).
• [16] K. Granat, B. Opyd, D. Nowak, M. Stachowicz, G. Jaworski, Usefulness of foundry tooling materials in microwave heating process, Arch. Metall. Mater. 58 (3), 919-922 (2013).

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).