Chenglong Liu got his Ph.D. from the Qingdao University of Technology in Jun. 2020. He is currently a full-time Associate Professor of the school of mechanical and automotive engineering (MAE) at Qingdao University of Technology. His main work is concentrated on theoretical and experimental study of limited lubrication. He has published more than 30 papers in peer-reviewed journals. He owns 3 invention patents in the lubrication enhancement technology. He has won the 2021 Excellent Doctoral Dissertation Award of Shandong Province.

Current research interests:

1. Theoretical and experimental research of lubrication with Limited Lubricant Supply (LLS);

2. Development of advanced industrial lubrication technology and equipment;

3. Designing and manufacturing of low energy consumption bearing.

Main Research Project:

1. 2023-2025. Mechanism and application of lubrication enhancement of composite groove array surface coupled with customized oleophilic/oleophobic pattern and bionic micro-structure.

2. 2023-2025. Mechanism and application of biomimetic micro-modeling on the surface of rolling bearings of Marine engineering equipment.

Output：

Ø Publications：

1. Liu Chenglong; Guo Feng; Wong Patrick; Li Xinming; Laser pattern-induced unidirectional lubricant flow for lubrication track replenishment. Friction, 2022, 10(8): 1234-1244. (SCI一区，Top期刊)

2. Liu Chenglong; Guo Feng; Wong Patrick; Li Xinming; Tribological behaviour of surfaces with stepped wettability under limited lubricant supply. Tribology International, 2020, 141: 105880. (SCI一区，Top期刊)

3. Liu Chenglong; Guo Feng; Li Xinming; Wong Patrick, Poll Gerhard; Liu Muyuan. Enhancement of lubricant replenishment under limited lubricant supply in rolling bearings. Tribology Letters, 2024, 72(1), 6. (SCI三区)

4. Liu Chenglong; Guo Feng; Li Xinming; Li Shuyi; Han Suli; Wan Yong; Experimental study of elastohydrodynamic lubrication behaviour under single oil droplet supply, Tribology International, 2018, 118: 432-440. (SCI一区，Top期刊)

5. Liu Chenglong; Guo Feng; Wong Patrick; Characterisation of starved hydrodynamic lubricating films. Tribology International, 2019, 131: 694-701. (SCI一区，Top期刊)

6. Liu Chenglong; Guo Feng; Wong Patrick; Li Xinming; (2023). Effect of Oil Dispersion on Lubricating Film Thickness Generation under Oil Droplet Supply Conditions. Lubricants, 2023, 11(12), 512. (SCI三区)

7. Liu Chenglong; Guo Feng; Li Xinming; Li Shuyi; Han Suli; Wan Yong; Experimental study of elastohydrodynamic lubrication behaviour under single oil droplet supply, Tribology International, 2018, 118: 432-440. (SCI一区，Top期刊)

8. Guo Feng; Li Shuyi; Liu Chenglong; Li Xinming; Liu Xiaoling; Film building in circular EHL contact lubricated by oil droplet groups. Lubrication Science, 2018, 30(4): 149–159. (SCI三区)

9. Zhang T, Liu C, Li X, et al. Fabrication of a composite groove array surface with gradient wettability which delivers enhanced lubrication performance[J]. Lubricants, 2025, 13(5): 193. (SCI三区，通讯作者)

10. Li, W., Guo, F., Liu, C., & Ma, Z. (2023). Experimental study on the influence of stearic acid additive on the elastohydrodynamic lubrication of mineral oil 2137. Lubricants, 11(10), 446. (SCI三区)

11. Li, S.Y., Guo, F., Li, X.M. Liu C.L. Elastohydrodynamic Lubrication with Oil Droplets [J]. Tribology Letters, 65, 162 (2017). (SCI三区)

12. Li S, Guo F, Li X, Liu C, et al. Effect of the slide-roll ratio on point contact EHL under oil droplet supply[J].Tribology International,2019,130: 261-269. (SCI一区)

Ø Patents：

1. 刘成龙, 郭峰. 一种自集油增强型滚道表面及其制备方法, 中国发明专利, ZL201710401538.7.

2. 郭峰, 刘成龙, 栗心明. 一种两维离散润湿集油增强功能表面及其制备方法, 中国发明专利, ZL201710775819.9.

3. 一种轴承用三维梳齿状凹槽阵列表面及制备方法,中国发明专利, ZL 202111450909.3.