Crack identification of aeroengine compressor blades based on blade tip timing

Yun ZHANG; Chenguang LIU; Yukun ZHANG; Peng LI

doi:10.7527/S1000-6893.2025.31823

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2025 , Vol. 46 >Issue 23: 231823 - 231823

DOI: https://doi.org/10.7527/S1000-6893.2025.31823

Solid Mechanics and Vehicle Conceptual Design

Crack identification of aeroengine compressor blades based on blade tip timing

Yun ZHANG ,
Chenguang LIU ,
Yukun ZHANG ,
Peng LI

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^1.Aeronautical Foundation Institute，Naval Aeronautical University，Yantai 264001，China
^2.Qingdao Campus，Naval Aeronautical University，Qingdao 266041，China

E-mail： 17370228702@163.com

Received date: 2025-01-20

Revised date: 2025-02-10

Accepted date: 2025-02-15

Online published: 2025-02-28

Supported by

Military High-Level Scientific and Technological Innovation Talents Engineering Program

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Abstract

The Blade Tip Timing （BTT） method facilitates non-contact vibration measurement for real-time online monitoring of rotating blade cracks. One of its primary challenges is the reconstruction of undersampled blade tip timing signals. This paper introduces the Cluster contraction Stage wise Orthogonal Matching Pursuit （CS-OMP） algorithm to address this issue， proposing a CS-OMP-based method for reconstructing undersampled vibration signals of compressor blades in aeroengines. The proposed method aims to improve the reconstruction accuracy and real-time performance of blade vibration signals. Additionally， it identifies blade cracks by detecting changes in the first-order modal frequency of rotating compressor blades. The simulation analysis verifies that this method can accurately identify the single-modal and multi-modal vibration parameters of blades. Furthermore， blade crack identification experiments were conducted using a scaled-down compressor test component of an aero-engine. The results demonstrate that this method outperforms the traditional Orthogonal Matching Pursuit （OMP） algorithm in blade vibration reconstruction and achieves accurate identification of blade cracks.

Key words： blade tip timing; resonance identification; sparse reconstruction; crack identification; aeroengine

Cite this article

Yun ZHANG , Chenguang LIU , Yukun ZHANG , Peng LI . Crack identification of aeroengine compressor blades based on blade tip timing[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(23) : 231823 -231823 . DOI: 10.7527/S1000-6893.2025.31823

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