Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Microwave Rectangular Waveguide Measurement of the Engine Oil Dielectric Constant

초고주파 구형도파로를 이용한 엔진 오일의 유전율 측정

  • Kim, Ki-Hoon (Dept. of Electronics and Electrical Engineers Hongik University) ;
  • Kim, Young-Ju (Dept. of Electronics and Electrical Engineers Hongik University)
  • 김기훈 (홍익대학교 전자 전기 공학과) ;
  • 김영주 (홍익대학교 전자 전기 공학과)
  • Received : 2011.02.18
  • Accepted : 2011.04.27
  • Published : 2011.06.30
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Abstract

The rectangular waveguide technique can be used to measure the complex permittivity of dielectric material of various thickness and cross section. This paper presents the analysis system of engine oil permittivity at which deterioration of engine oil is measured at the X-band(8-12.5 GHz). The middle of the rectangular waveguide has engine oil case and is connected with VNA(Vector Network Analyzer) for the measurement of the transmission$(S_{21})$ and reflection$(S_11)$ and then the permittivity is extracted. The deterioration of engine oil is proved by the comparison with both the extracted data and reference data. As the additional research, This paper suggest that an accurate permittivity is considered by not only the wave guide length but the air gap between oil case and the waveguide.

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References

  1. C.Pu et al, IEEE Photonics Technol. Letters, Vol. 12, No.12, pp. 1665-1667, 2000. https://doi.org/10.1109/68.896342
  2. Jangannathan, S and Raju, GV.S. "Remaining Useful Life Prediction of Automotive Engine Oils using MEMS Technologies", American Control Conference, 2000. Proceedings of the 2000, Vol. 5, 28-30, pp. 3511-3512, 2000.
  3. . Simon S. Wang and Yingjie Lin, "A New Technique for Detecting Antifrreze in Engine Oil During Early Stage of Leakage", Sensors and Actuators B: Chemical, Vol. 96, Issues 1-2, 15, 2003.
  4. Bois, K.J., Benally, A.D., and Zoughi, R., "Microwave Near-field Reflection Propertyanalysis of Concrete for Material Content Determination", IEEE Trans. Instr. and Meas., Vol. 49, pp. 49-55, 2000. https://doi.org/10.1109/19.836308
  5. Anderson, J.M., Sibbald, C.L., and Stuchly, S.S., " Dielectric Measurements using a Rational Function Model", IEEE Trans. MTT, Vol. 42, pp. 199-204, 1994. https://doi.org/10.1109/22.275247
  6. Kraszewski, A.W. and Nelson, S.O., "Observations on Resonant Cavity Perturbations by Dielectric Objects", IEEE Trans. MTT, Vol. 40, pp. 151-155, 1992. https://doi.org/10.1109/22.108334
  7. Arthur D. Haigh, Frank Thompson, and Andrew A. P. Gibson, "Complex Permittivity of Liquid and Granular Materials using Waveguide Cells", Subsurface Sensing Technologies and Applications, Vol. 2, No. 4, 2001.
  8. A. M. Nicolson and G. F. Ross, "Measurement of the Intrinsic Properties of Materials by Time Domain Techniques", IEEE Transactions on Instrumentation and Measurement, vol. 19, no. 4, pp. 377-382, 1970. https://doi.org/10.1109/TIM.1970.4313932
  9. W. B. Weir, "Automatic Measurement of Complex Dielectric Constantand Permeability at Microwave Frequencies", Proceedings of the IEEE, vol. 62, no. I, pp. 33-36, 1974. https://doi.org/10.1109/PROC.1974.9382
  10. Clifton Carthelle Courtney, "Time-Domain Measurement of the Electromagnetic Properties of Materials", IEEE Trans. MTT, Vol. 46, 1998.
  11. 전상명, "엔진오일의 화학적 및 물리적 변화에 의한 퇴화정도와 유전상수 변화에 관한 상호관계 연구", Journal of the KSTLE, Vol. 22, 2006.