Fault analysis of aero-engine spacer ring crack

Jin Lu; Xufeng Yang; Fei He; Zhengming Qian; Shun Mei

doi:10.1117/12.3046882

27 September 2024 Fault analysis of aero-engine spacer ring crack

Jin Lu, Xufeng Yang, Fei He, Zhengming Qian, Shun Mei

Proceedings Volume 13261, Tenth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024); 1326144 (2024) https://doi.org/10.1117/12.3046882
Event: 10th International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024), 2024, Wuhan, China

Abstract

Cracks on the mounting edge of spacer ring were found in the decomposition inspection of a turboshaft engine after test. Through the comprehensive analysis of appearance inspection, fracture analysis, metallographic analysis and simulation calculation of the faulty parts, the crack properties and fault causes were determined. The analysis shows that the relative radial deformation of the spacer ring and the centrifugal blade disc exceeds the design clearance in cold state during operation, and the contact compressive stress and relative displacement of the positioning surface of the installation edge end produce fretting wear. Under the action of working fatigue, the spacer ring appears fretting fatigue, and the expansion crack first appears in the region with the maximum steady-state stress. At the same time, the improvement measures are put forward for the fault part.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jin Lu, Xufeng Yang, Fei He, Zhengming Qian, and Shun Mei "Fault analysis of aero-engine spacer ring crack", Proc. SPIE 13261, Tenth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024), 1326144 (27 September 2024); https://doi.org/10.1117/12.3046882

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