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Experimental Measurement of Oil Film Thickness Distribution in Titling-Pad Thrust Bearings by Ultrasonic Piezoelectric Elements

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Abstract

Introduction

Tilting-pad thrust bearings are widely used in high-speed and heavy-load rotor-bearing system. Measurement of the oil film thickness distribution is vital important for understanding bearing’s lubrication condition. However, this remains a challenge because the oil film normally locates in the enclosed space and has a very tiny scale.

Methods

Here, a tilting-pad thrust bearing rig with six pads is built and the ultrasonic methods are used to measure the oil film thickness distribution and further obtain the gesture of the tilting-pad thrust bearing. Eight piezoelectric elements are bonded on the back of one pad of the thrust bearing, making the pad similar as a smart bearing. The oil film thickness of each gauging point is obtained by the characteristic of the reflected sound. Then both the oil film thickness distribution and the gesture of the pad are obtained by fitting the measured values via least square fit. The influences of the vibration, load and rotor speed on the oil film thickness distribution are then investigated.

Conclusion

The results agree well with the ones obtained by the eddy sensors. This work presents a promising non-invasive method to measure the oil film thickness distribution in tilting-pad thrust bearings.

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References

  1. Jablonka K, Glovnea R, Bongaerts J (2012) Evaluation of EHD films by electrical capacitance. J Phys D Appl Phys 45:385301

    Article  Google Scholar 

  2. Schnabel S, Marklund P, Minami I, Larsson R (2016) Monitoring of running-in of an EHL contact using contact impedance. Tribol Lett 63:10

    Article  Google Scholar 

  3. Jablonka K, Glovnea R, Bongaerts J (2018) Quantitative measurements of film thickness in a radially loaded deep-groove ball bearing. Tribol Int 119:239–249

    Article  Google Scholar 

  4. Jablonka K, Glovnea R, Bongaerts J, Morales-Espejel G (2013) The effect of the polarity of the lubricant upon capacitance measurements of EHD contacts. Tribol Int 61:95–101

    Article  Google Scholar 

  5. Marx N, Guegan J, Spikes HA (2016) Elastohydrodynamic film thickness of soft EHL contacts using optical interferometry. Tribol Int 99:267–277

    Article  Google Scholar 

  6. Chen YJ, Huang P (2017) An improved interference method for measuring lubricant film thickness using monochromatic light. Tribol Lett 65:13

    Article  Google Scholar 

  7. Dwyer-Joyce RS, Drinkwater BW, Donohoe CJ (2003) The measurement of lubricant-film thickness using ultrasound. Proc R Soc A Math Phys Eng Sci 459:957–976

    Article  Google Scholar 

  8. Zhang K, Dou P, Wu TH, Feng K, Zhu YQ (2019) An ultrasonic measurement method for full range of oil film thickness. Proc Inst Mech Eng Part J J Eng Tribol 233:481–489

    Article  Google Scholar 

  9. Zhang K, Meng Q, Geng T (2015) Ultrasonic measurement of lubricant film thickness in sliding bearings with overlapped echoes. Tribol Int 88:89–94

    Article  Google Scholar 

  10. Zhang K, Meng QF, Chen W, Li JN, Harper P (2015) Ultrasonic measurement of oil film thickness between the roller and the inner raceway in a roller bearing. Ind Lubr Tribol 67:531–537

    Article  Google Scholar 

  11. Dou P, Wu T, Luo Z, Peng Z, Sarkodie-Gyan T (2019) The application of the principle of wave superposition in ultrasonic measurement of lubricant film thickness. Measurement 137:312–322

    Article  Google Scholar 

  12. Li M, Liu H, Xu C, Jing MQ, Xin WH (2015) Ultrasonic measurement of cylindrical roller bearing lubrication using high pulse repletion rates. J Tribol Trans ASME 137:042202

    Article  Google Scholar 

  13. Li M, Jing M, Chen Z, Liu H (2014) An improved ultrasonic method for lubricant-film thickness measurement in cylindrical roller bearings under light radial load. Tribol Int 78:35–40

    Article  Google Scholar 

  14. Zhang J, Drinkwater BW, Dwyer-Joyce RS (2006) Monitoring of lubricant film failure in a ball bearing using ultrasound. J Tribol 128:612

    Article  Google Scholar 

  15. Zhang J, Drinkwater BW, Dwyer-Joyce RS (2006) Acoustic measurement of lubricant-film thickness distribution in ball bearings. J Acoust Soc Am 119:863

    Article  Google Scholar 

  16. Reddyhoff T, Dwyer-Joyce R, Harper P (2006) Ultrasonic measurement of film thickness in mechanical seals. Seal Technol 2006:7–11

    Article  Google Scholar 

  17. Dwyer-Joyce RS, Reddyhoff T (2005) Ultrasonic phase and amplitude and the measurement of oil film thickness

  18. Drinkwater BW, Pritchard J, Harper P, Dwyer-Joyce RS (2006) Oil film measurement in polytetrafluoroethylene-faced thrust pad bearings for hydrogenerator applications. Proc Inst Mech Eng Part A J Power Energy 220:619–628

    Article  Google Scholar 

  19. Dwyer-Joyce RS, Reddyhoff T, Zhu J (2011) Ultrasonic measurement for film thickness and solid contact in elastohydrodynamic lubrication. J Tribol 133:031501

    Article  Google Scholar 

  20. Zhang K, Wu TH, Meng QH, Meng QF (2018) Ultrasonic measurement of oil film thickness using piezoelectric element. Int J Adv Manuf Technol 94:3209–3215

    Article  Google Scholar 

  21. Ouyang W, Yuan X, Jia Q (2014) Analysis of tilting-pad thrust bearing static instability and lubrication performance under the bistability. Ind Lubr Tribol 66:584–592

    Article  Google Scholar 

Download references

Acknowledgements

This work was supported by National Natural Science Foundation of China (Grant No. 51705140), the National Key R&D Program of China (Grant No: 2018YFB2000100), the Natural Science Foundation of Hunan Province, China (Grant No. 2018JJ3049), the Science in Strategic Emerging Industries and Transformation of Major Technological Achievements Project of Hunan Province, China (Grant No. 2017GK4016), and the Fundamental Research Funds for the Central Universities.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, 410082, Hunan, China

    Jie Zhu, Kai Zhang & Kai Feng

  2. Hunan Sund Industrial and Technological Co., Ltd, Xiangtan, 411101, Hunan, China

    Jie Zhu

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  1. Jie Zhu
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  2. Kai Zhang
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  3. Kai Feng
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Correspondence to Kai Zhang.

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Zhu, J., Zhang, K. & Feng, K. Experimental Measurement of Oil Film Thickness Distribution in Titling-Pad Thrust Bearings by Ultrasonic Piezoelectric Elements. J. Vib. Eng. Technol. 9, 1335–1346 (2021). https://doi.org/10.1007/s42417-021-00300-2

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  • DOI: https://doi.org/10.1007/s42417-021-00300-2

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