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Relevant bibliographies by topics / Blade Tip Timing

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Academic literature on the topic 'Blade Tip Timing'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 March 2023

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Journal articles on the topic "Blade Tip Timing"

1

Zhongsheng, Chen, Yang Yongmin, Guo Bin, and Hu Zheng. "Blade damage prognosis based on kernel principal component analysis and grey model using subsampled tip-timing signals." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 17 (2014): 3178–85. http://dx.doi.org/10.1177/0954406214526584.

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Damage prognosis of high-speed blades is very important for industrial turbomachinery. Nowadays, vibration monitoring using blade tip-timing methods is becoming promising. However, its main drawback is blade tip-timing signals are subsampled. Very few works have been done on damage prognosis using subsampled blade tip-timing signals. This paper investigates a novel method of blade damage prognosis based on kernel principal component analysis and grey model. Firstly, a nonaliasing reconstruction algorithm of subsampled blade tip-timing signals is proposed based on the Shannon theorem and wavele

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Gallego-Garrido, J., G. Dimitriadis, I. B. Carrington, and J. R. Wright. "A Class of Methods for the Analysis of Blade Tip Timing Data from Bladed Assemblies Undergoing Simultaneous Resonances—Part II: Experimental Validation." International Journal of Rotating Machinery 2007 (2007): 1–10. http://dx.doi.org/10.1155/2007/73624.

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Blade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. In Part I of this work a class of methods for the analysis of blade tip timing data from bladed assemblies undergoing two simultaneous synchronous resonances was developed. The approaches were demonstrated using data from a mathematical simulation of tip timing data. In Part II the methods are validated on an experimental test rig. First, the construction and characteristics of the rig will be discussed. Then, the performance of the analysis techniques when applied to data from the rig will be comp

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Jamia, Nidhal, Michael I. Friswell, Sami El-Borgi, and Ralston Fernandes. "Simulating eddy current sensor outputs for blade tip timing." Advances in Mechanical Engineering 10, no. 1 (2018): 168781401774802. http://dx.doi.org/10.1177/1687814017748020.

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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. Eddy current sensors are a practical choice for blade tip timing and have been used extensively. As the data requirements from the timing measurement become more stringent and the systems become more complicated, including the use of multiple sensors, the ability to fully understand and optimize the measurement system becomes more important. This requires detaile

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Balda, Miroslav, and Olga Červená. "Residual Fatigue Lives of Steam Turbine Blades." Applied Mechanics and Materials 827 (February 2016): 121–24. http://dx.doi.org/10.4028/www.scientific.net/amm.827.121.

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The paper deals with an assessment of blade tip movements based on precise time measurement known under abbreviation BTT - Blade Tip Timing. In addition to the common way of BTT data processing, a new Residual Fatigue Lives of Blades system (RFLB) proceeds further up to estimation of blade damages by processing output files generated by BTT systems.

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Zhang, Liang, Qidi Wang, and Xin Li. "Waveform Prediction of Blade Tip-Timing Sensor Based on Kriging Model and Static Calibration Data." Mathematical Problems in Engineering 2023 (February 17, 2023): 1–15. http://dx.doi.org/10.1155/2023/9632212.

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Blade tip clearance is an important parameter affecting the efficiency, stability, and safety of aero-engines. During the high-speed rotation of the blade, the blade tip clearance changes, which leads to changes in signal amplitude collected by the tip timing sensor. When the rotor is rotating at high speed, it is impractical to measure the tip-timing signal under each tip clearance. Aiming at the previous problems, a prediction method of blade tip-timing sensor waveform based on the combination of the Kriging model and static calibration data are proposed. The relationship between the output

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Zhu, Guangya, Chongyu Wang, Wei Zhao, Yonghui Xie, Ding Guo, and Di Zhang. "Blade Crack Diagnosis Based on Blade Tip Timing and Convolution Neural Networks." Applied Sciences 13, no. 2 (2023): 1102. http://dx.doi.org/10.3390/app13021102.

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The diagnosis of blade crack faults is critical to ensuring the safety of turbomachinery. Blade tip timing (BTT) is a non-contact vibration displacement measurement technique, which has been extensively studied for blade vibration condition monitoring recently. The fault diagnosis methods based on deep learning can be summarized as studying the internal logical relationship of data, automatically mining features, and intelligently identifying faults. This research proposes a crack fault diagnostic method based on BTT measurement data and convolutional neural networks (CNNs) for the crack fault

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Chen, Jian Ping, and Wei Dong. "Research on the Monitoring Technique of Non-Contact Running Status of Cooling Tower Fan Blades." Advanced Materials Research 201-203 (February 2011): 2307–11. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.2307.

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This paper presents a new monitoring method of non-contact blade status—blade tip timing monitoring method based on the principle of discontinuous phase principle, and a new monitoring system of non-contact running status of cooling tower fan blades is developed on the basis of the technology of single-chip microcomputer(SCM) and the blade tip timing monitoring method.The monitoring system is controlled by the SCM and has real-time monitoring to the blade. The pulse signal which is collected by the sensor is processed by the SCM.Through using the timing and interrupt function of SCM, the pulse

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Guo, Haonan, Yongmin Yang, Fengjiao Guan, et al. "A Blade Dynamic Strain Inversion Method for Rotating Blades Based on Blade Tip Timing." Journal of Physics: Conference Series 2029, no. 1 (2021): 012073. http://dx.doi.org/10.1088/1742-6596/2029/1/012073.

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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 proposed through NNI. The three-dimensional model of the rotating blade is established, and the Finite Element Analysis (FEA) considering stress stiffening is carried out to obtain the transfer ratio between the blade tip displacement and the blade strain at a certain

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Zhang, Liang, Qidi Wang, and Xin Li. "An Improved Blade Vibration Parameter Identification Method considering Tip Clearance Variation." Shock and Vibration 2021 (November 23, 2021): 1–14. http://dx.doi.org/10.1155/2021/3537006.

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Blade tip timing (BTT) technology is the most effective means for real-time monitoring of blade vibration. Accurately extracting the time of blade tip reaching the sensors is the key to ensure the accuracy of the BTT system. The tip clearance changes due to various complex forces during high-speed rotation. The traditional BTT signal extraction method does not consider the influence of tip clearance change on timing accuracy and introduces large timing errors. To solve this problem, a quadratic curve fitting timing method was proposed. In addition, based on the measurement principle of the edd

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Zhang, Liang, Qidi Wang, Huiqun Yuan, and Xin Li. "Blade Serial Number Identification Based on Blade Tip Clearance without OPR Sensor." Shock and Vibration 2021 (December 29, 2021): 1–11. http://dx.doi.org/10.1155/2021/3829893.

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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 sensor, a new identification method of blade serial number based on blade tip clearance is proposed in this paper. The relationship between blade tip-timing data and blade serial number can be identified by the matching relationship between blade tip clearance under static state and dynamic state. According to the finite element simulation and e

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Dissertations / Theses on the topic "Blade Tip Timing"

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Tomassini, Roberto. "Blade Tip Timing and Blade Tip Clearance Measurement System Based on Magnetoresistive Sensors." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3422775.

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The accurate control of running gaps between static and rotating components is vital to preserve mechanical integrity and ensure a correct functioning of any rotating machinery. In aero-engines, tip leakage above the airfoil tip results in relevant aerodynamic losses, therefore the gap between the rotor blades tip and the casing must be the smallest possible, but enough to avoid contacts. One way to measure and monitoring tip gap is by a Blade Tip Clearance (BTC) technique. The measurement of blade vibrations and eigen frequencies is also a crucial part of the development of any new gas tur

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Jousselin, Olivier. "Development of blade tip timing techniques in turbo machinery." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/development-of-blade-tip-timing-techniques-in-turbo-machinery(da682144-7009-4cdc-8f52-ff7cd0cf1cf1).html.

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In the current gas turbine market, the traditional design-test-redesign loop is not a viable solution to deploy new products within short timeframes. Hence, to keep the amount of testing to an absolute minimum, theoretical simulation tools like Finite Element Modelling (FEM) have become a driving force in the design of blades to predict the dynamic behaviour of compressor and turbine assemblies in high-speed and unsteady flows. The predictions from these simulation tools need to be supported and validated by measurements. For the past five years, Rolls-Royce Blade Tip Timing (BTT) technology h

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Carrington, Ian B. "Development of blade tip timing data analysis techniques." Thesis, University of Manchester, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492042.

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All turbomachines experience vibration from a variety of sources. Resonance may occur that subjects one or more blades to maximum stress conditions. Blade tip-timing (BTT) is a emergent, alternative blade stress measurement technology that is non-intrusive and noncontacting, yet delivers data on all blades in a rotor stage. By measuring blade tip passing times at a number of sensors mounted externally on the rotor's casing, processing and analysis of this data yields resonance frequencies or Engine Orders, and tip amplitudes. This study sought to advance Rolls-Royce's strategy for BTT by impro

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Visagie, Willem Johannes. "Blade tip timing to determine turbine blade fatigue in high backpressure conditions." Diss., University of Pretoria, 2020. http://hdl.handle.net/2263/75831.

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This dissertation presents an approach to use blade tip timing measurements with finite element analysis to predict the fatigue life of a low pressure steam turbine last stage blade under high backpressure and low flow conditions. Material fatigue properties were determined through the extended universal material law for FV566 material, along with different temper scenarios. A finite element model of a blade with damping pins was developed, using the principle of cyclic symmetry for a perfectly tuned model. Pre-stress modal analysis was conducted, incorporating damping via friction and plastic

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Russhard, Peter. "Development of a blade tip timing based engine health monitoring system." Thesis, University of Manchester, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734183.

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Pickering, Todd Michael. "Methods for Validation of a Turbomachinery Rotor Blade Tip Timing System." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/47496.

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This research developed two innovative test methods that were used to experimentally evaluate the performance of a novel blade tip timing (BTT) system from Prime Photonics, LC. The research focused on creating known blade tip offsets and tip vibrations so that the results from a BTT system can be validated. The topic of validation is important to the BTT field as the results between many commercial systems still are not consistent. While the system that was tested is still in development and final validation is not complete, the blade tip offset and vibration frequency validation results sh

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Osburn, Nicholas Glen. "Implementation of a two probe tip-timing technique to determine compressor blade vibrations." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA381876.

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Thesis (M.S. in Aeronautical Engineering)--Naval Postgraduate School, June 2000.<br>Thesis advisors: Shreeve, Raymond P. "June 2000." Includes bibliographical references (p. 41). Also available online.

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Ellis, Brian. "A real-time hybrid method based on blade tip timing for diagnostics and prognostics of cracks in turbomachine rotor blades." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/73315.

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This dissertation proposes hybrid models for (i) diagnosis and (ii) remaining useful life estimation of a single fatigue crack in a low-pressure turbine blade. The proposed hybrid methods consist of physics-based methods and data-driven methods. In this dissertation, blade tip timing is used to measure the relative tip displacement of a rotor blade. The natural frequency of the blade is determined by detecting the critical speeds of the blade using a newly derived least squares spectral analysis method. The method shares its origin from the Lomb-Scargle periodogram and can detect resonance fr

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Grant, Kelly. "Experimental Testing of Tip-Timing Methods used for Blade Vibration Measurement in the Aero-Engine." Thesis, Cranfield University, 2004. http://dspace.lib.cranfield.ac.uk/handle/1826/4623.

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An important component within the jet engine in terms of vibration and high cycle fatigue (HCF) is the blade. This is the component where continuously higher demands on weight and loading are being made. As a consequence of this, there has been a growing interest in developing both numerical methods and instrument technology for blade HCF measurement. This growing interest has also been attributed to changing attitude within the military and aerospace industry, which has tended towards driving down costs and lengthening the engine's life span. Many development technologies have been reported.

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Zdunek, Agnieszka Izabela. "Prediction of natural frequencies of turbine blades for turbocharger application : an investigation of the finite element method, mathematical modelling and frequency survey methods applied to turbocharger blade vibration in order to predict natural frequencies of turbocharger blades." Thesis, University of Bradford, 2014. http://hdl.handle.net/10454/7328.

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Methods of determining natural frequencies of the D76D88, B76D88, A86E93, C86G90, C86L90 and C125L89 turbine wheel designs for various environmental conditions were investigated by application of Finite Element Analysis and beam theory. Modelling and simulation methods were developed ; the first method composed of 15 finite element simulations ; the second composed of 15 finite element simulations and a set of experimental frequency survey results; the third composed of 5 simulations , an incorporated mathematical model and a set of experimental frequency survey results. Each of these methods

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Books on the topic "Blade Tip Timing"

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Osburn, Nicholas Glen. Implementation of a two probe tip-timing technique to determine compressor blade vibrations. Naval Postgraduate School, 2000.

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Book chapters on the topic "Blade Tip Timing"

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Oh, Y., H. H. Yoo, and Y. Kim. "Synchronous Blade Vibration Analysis Using Blade Tip Timing Method." In Vibration Engineering for a Sustainable Future. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-46466-0_19.

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Diamond, D. H., P. S. Heyns, and A. J. Oberholster. "A Comparison Between Three Blade Tip Timing Algorithms for Estimating Synchronous Turbomachine Blade Vibration." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15536-4_18.

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Hu, Xinyu, Daming Zhuang, Jun He, Haizhou Huang, and Shixi Yang. "Research on Vibration Characteristics of Last Stage Blade Based on Blade Tip-Timing Technology." In Proceedings of IncoME-VI and TEPEN 2021. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99075-6_80.

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Spada, Raphael P., and Rodrigo Nicoletti. "Applying Compressed Sensing to Blade Tip Timing Data: A Parametric Analysis." In Mechanisms and Machine Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99270-9_9.

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Vercoutter, A., M. Berthillier, A. Talon, B. Burgardt, and J. Lardies. "Estimation of turbomachinery blade vibrations from tip-timing data." In 10th International Conference on Vibrations in Rotating Machinery. Elsevier, 2012. http://dx.doi.org/10.1533/9780857094537.4.233.

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Allport, J. M., M. L. Jupp, A. Pezouvanis, et al. "Turbocharger blade vibration: Measurement and validation through laser tip-timing." In 10th International Conference on Turbochargers and Turbocharging. Elsevier, 2012. http://dx.doi.org/10.1533/9780857096135.3b.173.

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Jousselin, O., P. Russhard, and P. Bonello. "A method for establishing the uncertainty levels for aero-engine blade tip amplitudes extracted from blade tip timing data." In 10th International Conference on Vibrations in Rotating Machinery. Elsevier, 2012. http://dx.doi.org/10.1533/9780857094537.4.211.

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Conference papers on the topic "Blade Tip Timing"

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Russhard, Pete. "Blade tip timing (BTT) uncertainties." In PROCEEDINGS OF THE 12TH INTERNATIONAL A.I.VE.LA. CONFERENCE ON VIBRATION MEASUREMENTS BY LASER AND NONCONTACT TECHNIQUES: Advances and Applications. Author(s), 2016. http://dx.doi.org/10.1063/1.4952657.

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Ste´phan, Cyrille, Marc Berthillier, Joseph Lardie`s, and Arnaud Talon. "Tip-Timing Data Analysis for Mistuned Bladed Discs Assemblies." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50825.

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In turbomachine industry, bladed assembly vibration measurements are very important for blades behaviour estimation. These measurements are generally obtained from strain gauges. However, one of the most promising methods for the analysis of blade vibrations in rotating bladed assemblies is the Blade Tip Timing or Optical Blade Vibration Measurement method. A set of optical sensors is mounted on an engine casing, in front of a disc, and measures the times of arrival of each blade. These timings are then used to compute the vibrations of the blades. However the fundamental problem for spectral

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Lawson, Craig, and Paul Ivey. "Compressor Blade Tip Timing Using Capacitance Tip Clearance Probes." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38284.

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Turbomachinery blade vibrations of sufficient amplitude cause High Cycle Fatigue, which reduces blade life. In order to observe this vibration a non-intrusive monitoring system is sought. The vibration can be detected by measuring blade tip timing since in the presence of vibration the blade timing will differ slightly from the passing time calculated from rotor speed. This paper provides new insights into the ability of a commercially available capacitance probe tip clearance measurement system for application as a non-intrusive turbomachinery blade tip timing measurement device. Initial expe

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Guru, Siddhartha S., S. Shylaja, Sunil Kumar, and Ramesh Murthy. "Pre-Emptive Rotor Blade Damage Identification by Blade Tip Timing Method." In ASME 2013 Gas Turbine India Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gtindia2013-3743.

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The Blade Tip Timing (BTT) method uses the differential arrival timings of the blades at case-mounted sensors to effectively characterize the vibrations of all blades in a rotor. This paper studies the use of the BTT method for preemptive prediction of rotor blade damage; through a careful monitoring of blade natural frequencies in conjunction with the blade tip position during an engine test. In the current study, the low pressure turbine stage of a developmental aero engine is instrumented with a combination of eddy current and optical sensors located circumferentially on the casing. This in

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Mileshin, Victor, Victor Fateev, and Alexander Stepanov. "Blade Fissure Determination by Means of Blade Tip-Timing System." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76848.

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Since the turbomachinery came into existence there is control issue of rotor blade stress condition and blade health monitoring both aero engines in service and in process of impeller machines refinement. This issue relevance is to rotor blade failure lead to serious damage of compressor and aero engines in whole. The timely detection rotor blade failure such as a fissure can prevent emergency and enabled to avoid costly repair. One of the techniques for determination of rotor blades vibration behavior is the blade tip-timing method. Of late years this method find use for turbo machines testin

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Li, Menglin, Fajie Duan, and Tao Ouyang. "Analysis of blade vibration frequencies from blade tip timing data." In Sixth International Symposium on Precision Engineering Measurements and Instrumentation. SPIE, 2010. http://dx.doi.org/10.1117/12.885360.

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Zhang, Jiamin, Peng Shan, Kai Cheng, and Dechao Ye. "Comparison of Blade Tip Timing With Strain Gauge Data for Evaluation of Dynamic Characterization of Last Stage Blade With Interlocked Shroud for Steam Turbine." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76264.

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The tip-timing technology has been widely developed and has become an industry standard in aircraft engine and gas turbine over past decade. The main application of the tip-timing method is to verify safe operation of blades and monitor the health of blades. But tip-timing technology gets rarely used to the last stage blade of steam turbine. Particularly the blade is designed with an integral shroud, snubber and fir-tree root. The article mainly describes the process of identifying the dynamic characterization of last stage blade with an integral shroud and snubber by contactless measurements

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Kharyton, Vsevolod, Jean-Pierre Laine, Fabrice Thouverez, and Olexiy Kucher. "Simulation of Tip-Timing Measurements of a Cracked Bladed Disk Forced Response." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22388.

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The study intends to simulate the process of the blade tip amplitude calculation by the tip-timing method. An attention is focused on tip-timing measurements for detection of a cracked blade from the bladed disk forced response. The cracked blade is considered within frameworks of the bladed disk dynamic model that takes into account mistuning presence. Nonlinear formulation of a crack behavior is done with the harmonic balance method in its combination with the contact analysis that allows simulation of crack breathing. In order to make the cracked blade detection process evident, the crack l

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Lawson, Craig, and Paul C. Ivey. "The Measurement of Turbomachinery Blade Vibration Through Tip Timing With Capacitance Tip Clearance Probes." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53563.

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Turbomachinery blade vibrations can cause High Cycle Fatigue, which reduces blade life. In order to observe this vibration a non-intrusive monitoring system is sought. The vibration can be detected by measuring blade tip timing since in the presence of vibration the blade timing will differ slightly from the passing time calculated from rotor speed. Much research and development has gone into investigating the ability of optical probes to achieve this. However, this paper looks at the potential for a dual use capacitance probe sensor to measure both tip timing and tip clearance. This paper pro

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Wang, Zengkun, Zhibo Yang, Shuming Wu, et al. "An OPR-free Blade Tip Timing Method Based on Blade Spacing Change." In 2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2020. http://dx.doi.org/10.1109/i2mtc43012.2020.9129036.

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