TY - GEN
T1 - A Novel Nonlinear Transmissibility Function-Based Method for Diagnosing Shaft Cracks of Rotating Machineries
AU - Li, Quankun
AU - Wang, Rui
AU - Liao, Mingfu
AU - Shi, Bin
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2022
Y1 - 2022
N2 - Fault diagnosis of shaft cracks plays an important role for the safety and reliability of rotating machineries such as aero-engine, turbopump, wind power generator and internal combustion turbine in modern industrial applications. In this paper, a novel method for diagnosing shaft cracks of rotating machineries based on nonlinear transmissibility function is proposed. In the new method, a nonlinear dynamic model is built to describe the nonlinear behavior of a simply supported rotor with breathing cracks and nonlinear supports (nonlinear bearing damping and stiffness coefficients). Damage features for benchmark and cracked structures are derived respectively, and damage indicator for crack diagnosis is defined as the relative change between damage features. Through two numerical studies simulated by the Matlab software, procedures of proposed method are demonstrated and method’s effectiveness and availability are verified. In the future study, the proposed nonlinear transmissibility function-based crack diagnosis method could be extended and applied for other faults in rotating machineries like unbalance, misalignment, stator-to-rotor rub and support structure looseness and so forth.
AB - Fault diagnosis of shaft cracks plays an important role for the safety and reliability of rotating machineries such as aero-engine, turbopump, wind power generator and internal combustion turbine in modern industrial applications. In this paper, a novel method for diagnosing shaft cracks of rotating machineries based on nonlinear transmissibility function is proposed. In the new method, a nonlinear dynamic model is built to describe the nonlinear behavior of a simply supported rotor with breathing cracks and nonlinear supports (nonlinear bearing damping and stiffness coefficients). Damage features for benchmark and cracked structures are derived respectively, and damage indicator for crack diagnosis is defined as the relative change between damage features. Through two numerical studies simulated by the Matlab software, procedures of proposed method are demonstrated and method’s effectiveness and availability are verified. In the future study, the proposed nonlinear transmissibility function-based crack diagnosis method could be extended and applied for other faults in rotating machineries like unbalance, misalignment, stator-to-rotor rub and support structure looseness and so forth.
KW - Crack diagnosis
KW - Rotating machinery
KW - Shaft crack
KW - Transmissibility function
UR - http://www.scopus.com/inward/record.url?scp=85116457679&partnerID=8YFLogxK
U2 - 10.1007/978-981-16-5912-6_8
DO - 10.1007/978-981-16-5912-6_8
M3 - 会议稿件
AN - SCOPUS:85116457679
SN - 9789811659119
T3 - Lecture Notes in Electrical Engineering
SP - 100
EP - 112
BT - Advances in Applied Nonlinear Dynamics, Vibration and Control - 2021 - The proceedings of 2021 International Conference on Applied Nonlinear Dynamics, Vibration and Control, ICANDVC 2021
A2 - Jing, Xingjian
A2 - Ding, Hu
A2 - Wang, Jiqiang
PB - Springer Science and Business Media Deutschland GmbH
T2 - International Conference on Applied Nonlinear Dynamics, Vibration and Control, ICANDVC 2021
Y2 - 23 August 2021 through 25 August 2021
ER -