Results 21 to 30 of about 135 (114)
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 Taking the traction motor of CRH2 high‐speed train as the research object, this paper proposes a diagnosis method based on random forest and XGBoost for the compound fault resulting from stator interturn short circuit and air gap eccentricity. First, the U‐phase and V‐phase currents are used as fault diagnosis signal and then the Savitzky–Golay ...
Rui Tian +3 more
wiley +1 more source
Design Optimization and Burst Speed Prediction of a Ti2AlNb Blisk
International Journal of Aerospace Engineering, Volume 2021, Issue 1, 2021., 2021 The increasing demand for power, fuel efficiency, and safety of aeroengines has called for weight reduction and structural integrity examination of the critical components. This paper is aimed at performing a systematic investigation on the design of a high‐speed Ti2AlNb blisk, including disc geometry optimization and burst speed prediction ...
Yue Guo +5 more
wiley +1 more source
Transient Resonance Passage of a Mistuned Bladed Disk with and without Underplatform Dampers
International Journal of Turbomachinery, Propulsion and Power, 2023 In this work, the vibration response of an academic free-standing turbine blisk is analyzed in regard to transient resonance passages. Measurement data are recorded using strain gauges and tip timing to evaluate the blades first bending mode both ...
Katharina Brinkmann +3 more
doaj +1 more source
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 The prediction of vibration characteristics was studied in the mistuned bladed disk by the mobile interface prestressed component mode synthesis (CMS) superelement method. When the strongly, generally, and weakly coupling in the mistuned bladed disk, according to the results of the direct FEM method, the prediction accuracy of this method was verified ...
Liang Zhang +3 more
wiley +1 more source
Applicability Analysis of Inspection and Monitoring Technologies in Wind Turbine Towers
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Wind turbines are one of the key systems in wind energy development. The wind tower supporting the whole wind turbine is a towering structure, which has been affected by installation, transportation, environment, and other factors. Furthermore, it is prone to experience other quality problems that would be difficult to detect for wind turbine towers ...
Yanchao Yue +7 more
wiley +1 more source
Aerospace, 2021 The blisks and labyrinth seals in gas turbine engines are typical rotating periodic structures. Vibration problems will inevitably occur during the operation, which can easily lead to High Cycle Fatigue failure of the structure.
Shimin Gao, Yanrong Wang
doaj +1 more source
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Methods based on vibration analysis are currently regarded as the most conclusive means for fault diagnosis and health prognostics in rotary machinery. However, changing working conditions mean that the vibration signals originating from rotary machinery exhibit different levels of complexity.
Yong Chen +3 more
wiley +1 more source
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 To study the rub‐impact fault between the dynamic and static parts of the rotor system of aeroengines, the dual‐rotor system of a typical aeroengine is introduced and taken as the research object. The analytical kinetic model is established based on the Lagrange equation considering the structural characteristics of the dual‐rotor system, the coupling ...
Pingping Ma +5 more
wiley +1 more source
The influence of a workpiece shape on residual stresses during linear friction welding
Frontier Materials & Technologies, 2022 Linear friction welding is an advanced technology for manufacturing titanium blisks for gas-turbine engine compressors, which are subjected to stringent requirements for cyclic strength and dimensional accuracy.
Anatoly N. Pautov +3 more
doaj +1 more source
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Tabu genetic cat swarm optimization algorithm is proposed for optimization arrangement on mistuned blades. Furthermore, it is improved to be an innovative parallel algorithm based on Compute Unified Device Architecture (CUDA), whose performance is analyzed both in continuous and discrete solution space.
Yi Cai +5 more
wiley +1 more source