Results 21 to 30 of about 976,747 (262)
Blade Serial Number Identification Based on Blade Tip Clearance without OPR Sensor
Shock and Vibration, 2021 Blade serial number identification is one of the key issues in blade tip-timing vibration measurement without once-per-revolution (OPR) sensor. In order to overcome the shortcomings of the existing blade serial number identification methods without OPR ...
Liang Zhang +3 more
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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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Flow and Vibration in the Small Steam Turbine Last Stage [PDF]
MATEC Web of Conferences, 2022 The paper deals with evaluation of experimental data obtained from the real-size 30 MW output Waste to Energy steam turbine. For many turbine regimes pressures in the last stage area were obtained.
Hoznedl Michal +2 more
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Parameter Identification of Bladed Assemblies Using a Subspace Method [PDF]
International Journal for Simulation and Multidisciplinary Design Optimization, 2008 This paper is aimed at identifying a dynamical model for bladed assemblies such as turbines. Unknown excitation forces are applied to bladed disk assemblies leading to forced vibration responses.
Salhi Bendali +2 more
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Tipping time of a quantum rod [PDF]
European Journal of Physics, 2010 10 pages, 1 figure, To appear in Euro.
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A Review of Analysis Techniques for Blade Tip-Timing Measurements [PDF]
Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, 1997 This paper aims at evaluating the performance of the analysis methods currently used for the interpretation of vibration data measured at turbomachinery rotor blade tips using optical laser probes. The methods are classified by the form of the vibration which they can identify, namely asynchronous and synchronous with respect to rotor speed.
S. Heath, M. Imregun
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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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Sensors, 2017 Safety and performance of the turbo-engine in an aircraft is directly affected by the health of its blades. In recent years, several improvements to the sensors have taken place to monitor the blades in a non-intrusive way.
José Miguel Gil-García +3 more
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CALIBRATION OF BTT MEASUREMENT WITH RESPECT TO SENSOR POSITION OVER SHROUDED LSB
Acta Polytechnica CTU Proceedings, 2018 In order to increase efficiency and reliability of steam turbines, last stage blades are equipped with mid-span tie-boss and shroud. We can use Blade Tip-Timing method (BTT) to measure vibration of shrouded blades, but the measured level of vibration is ...
Tereza Dadáková, Zdeněk Kubín
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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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