1. Haocheng, Bi., Muming, H., Baojie, R., et al.: Research in frictional evolution of contact mechanical seals with hybrid lubrication. Tribology 21, 1–21 (2023)
2. Kesi, Li., Zhang Erqing, Fu., Pan, et al.: Condition assessment on mechanical seal face wear based on incomplete prior knowledge. Tribology 36(06), 717–725 (2016)
3. Mba, D., Roberts, T., Taheri, E., et al.: Application of acoustic emission technology for detecting the onset and duration of contact in liquid lubricated mechanical seals. Insight 48(8), 486–487 (2006)
4. Li Xiaohiu, Fu., Pan, C.W., et al.: The study of acoustic emission monitoring for contact state of seal end faces. J. Vib. Shock 35(08), 83–89 (2016)
5. Sadegh, H., Mehdi, A.N., Mehdi, A.: Classification of acoustic emission signals generated from journal bearing at different lubrication conditions based on wavelet analysis in combination with artificial neural network and genetic algorithm. Tribol. Int. 95, 426–434 (2016)