Tribology Letters

, 66:85 | Cite as

Analysis of the Dynamic Friction of a Gas Face Seal Based on Acoustic Emissions

  • Yuan Yin
  • Weifeng Huang
  • Xiangfeng Liu
  • Ying Liu
  • Zixi Wang
  • Wenjing Fan
  • Songtao Hu
Original Paper


Acoustic emission (AE) signals produced by the dynamic friction of a gas face seal are analyzed to uncover their information concerning the status of the seal. Experiments were conducted with a gas face seal test rig. By adjusting different operating parameters, friction occurred in different ways and produced discrepant AE signals. The root-mean-square value of AE signals under different operating conditions has varied fluctuations on a timescale of the rotation period, which distinguishes different dynamic friction patterns and furthermore shows the significant discrepancy of how dynamic friction is affected by different operating parameters. Numerical simulations using a dynamic model for a gas face seal with contact coupled were performed. A combination of the experiments and numerical simulations validates the dynamic friction dependence on waviness, which can be reflected by AE signals. This research demonstrates the approach of revealing the real-time friction status of a seal by analyzing AE signals on a timescale of the rotation period.


Mechanical seals Friction test methods Acoustic emission Real-time monitoring 



This work is supported by the National Natural Science Foundation of China (Grant Nos. 51735006 and U1737209) and the National Science and Technology Support Plan Project (Grant No. 2015BAA08B02).

Supplementary material

11249_2018_1037_MOESM1_ESM.rar (802 kb)
Supplementary material 1 (RAR 802 KB)


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory of TribologyTsinghua UniversityBeijing 100084China
  2. 2.State Key Laboratory of Mechanical System and VibrationShanghai Jiao Tong UniversityShanghai 200240China

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