Results 21 to 30 of about 4,554 (244)
Applied Sciences, 2023 A new method for the synchronous vibration parameter identification of constant-speed rotating blades based on blade tip clearance (BTC) measurement and blade tip timing (BTT) is introduced.
Liang Zhang +4 more
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Rotating blade vibration parameter identification based on genetic algorithm
Advances in Mechanical Engineering, 2023 In this paper, aiming at the identification of blade vibration parameters such as constant speed synchronization, constant speed asynchronous, and variable speed synchronization, the simulation platform Simulink is used to model the blade vibration ...
Shen Xiangxiang, Chen Guo, Liu Fuhai
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Machines, 2021 A turbomachine is a fundamental engineering apparatus meant to transfer energy between a rotor and a fluid. Turbomachines are the core of power generation in many engineering applications such as electric power generation plants, aerospace, marine power,
Alessandro Paolo Daga +3 more
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Applied Sciences, 2022 This paper presents an analysis of nonsynchronous rotor blade vibrations in the last stage of an LP steam turbine at various condenser pressures. The nonlinear least squares Levenberg–Marquardt method is used in a tip-timing analysis to determine ...
Romuald Rzadkowski +4 more
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Experimental Investigation on Hardware and Triggering Effect in Tip-Timing Measurement Uncertainty
Sensors, 2023 Non-destructive testing for structural health monitoring is becoming progressively important for gas turbine manufacturers. As several techniques for diagnostics and condition-based maintenance have been developed over the years, the tip-timing approach ...
Lorenzo Capponi +4 more
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A comparison of blade tip timing data analysis methods [PDF]
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2001 The experimental determination of the vibration characteristics of rotating engine blades is very important for fatigue failure considerations. One of the most promising techniques for measuring the frequency of blade vibrations is blade tip timing.
Carrington, I. B. +3 more
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CNN-based defect diagnosis method for rotating blades
You-qi chuyun, 2020 In order to solve the problem of difficult blade defect diagnosis caused by severe signal under-sampling in tiptiming technology, a defect diagnosis method for rotating blade based on convolution neural network (CNN) was proposed.In the method, the under-
Jiwang ZHANG +3 more
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An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
Sensors, 2013 When it comes to measuring blade-tip clearance or blade-tip timing in turbines, reflective intensity-modulated optical fiber sensors overcome several traditional limitations of capacitive, inductive or discharging probe sensors.
María Asunción Illarramendi +5 more
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A Blade Dynamic Strain Inversion Method for Rotating Blades Based on Blade Tip Timing
Journal of Physics: Conference Series, 2021 Abstract Based on the vibration response transfer ratio and Natural Neighbor Interpolation (NNI), the research on the noncontact inversion method of dynamic strain of high-speed rotating blades is carried out. The high-speed rotating blade is analyzed through the motion equation, and the correction method of the transfer ratio is ...
Haonan Guo +6 more
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Simulating eddy current sensor outputs for blade tip timing
Advances in Mechanical Engineering, 2018 Blade tip timing is a contactless method used to monitor the vibration of blades in rotating machinery. Blade vibration and clearance are important diagnostic features for condition monitoring, including the detection of blade cracks.
Nidhal Jamia +3 more
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