Results 51 to 60 of about 233 (128)

New blade tip-timing system for measuring rotor blade vibration of steam and gas turbines [PDF]

E3S Web of Conferences, 2019
One of the crucial issues regarding turbine maintenance is registering blade vibrations. These vibrations can cause serious damage to the engine. Turbine blade vibrations were measured during nominal speed as well as during run up and run down.
Kowaleczko Piotr, Rządkowski Romuald, Kubitz Leszek, Troka Paweł, Kowaleczko Paweł, Szczepanik Ryszard   +5 more
doaj   +1 more source

Breathing crack identification of rotating blades using blade tip timing based on envelope diagram images and optimized CNN model

Journal of Low Frequency Noise, Vibration and Active Control
As a promising non-contact blade vibration monitoring technology, the blade tip timing (BTT) method is crucial for monitoring the operational state of rotating blades in large turbo-machinery through recording vibration signals of blade tips.
Minghao Pan, Yongmin Yang, Fengjiao Guan, Haifeng Hu, Zifang Bian, Wenkang Huang, Bohao Xiao, Ang Li   +7 more
doaj   +1 more source

Statistical Approach for BTT probes distribution

, 2023
Blade tip timing (BTT) system is a non-invasive method used for measuring the blade tip timing of rotating machinery. The BTT system typically consists of sensor probes, signal conditioning system, and data acquisition unit.
Mekhalfia, Mohammed Lamine
core  

Iteratively Learning Reconstruction of Blade Tip-Timing Signals and Cointegration-Based Damage Detection Under Variable Conditions

IEEE Access
Blade tip-timing (BTT) is a direct blade vibration monitoring technique and how to use under-sampled BTT signals for blade damage detection is still challenging under variable conditions. Compressed sensing (CS) has been introduced for reconstructing BTT
Zhongsheng Chen, Haopeng Liu, Lianying Liao   +2 more
doaj   +1 more source

A blade tip-timing method without once-per-revolution sensor for blade vibration measurement in gas turbine engines

, 2020
The blade vibration measurement is crucial for gas turbine engines in order to ensure safe operations. One of the techniques is blade tip-timing (BTT), which is under the assumption that rotor speed is constant and depends on a once-per-revolution (OPR ...
Wu, Yadong, Russhard, Pete, Wang, Anjenq, Fan, Chengwei, Ruan, Can   +4 more
core   +1 more source

A Discussion on the Advancement of Blade Tip Timing Data Processing

, 2017
peer reviewedThe Blade Tip Timing method (BTT) is a well-known approach permitting individual blade vibration behavior characterization. The technique is becoming increasingly popular among turbomachinery vibration specialists. Its advantages include its
Defise, Colin, Dimitriadis, Grigorios, Colin Defise, Vsevolod Kharyton, Grigorios Dimitriadis, Kharyton, Vsevolod   +5 more
core   +1 more source

Non-contact identification of rotating blade vibration

Mechanical Engineering Journal, 2015
This paper presents a non-contact measurement and diagnostic method for the parametric identification of vibrations of rotating engine blades, based on blade tip-timing (BTT) measured by optical sensors.
Peng WANG, Donald KARG, Zhaoyan FAN, Robert X. GAO, Karrin KWOLEK, Andrew CONSIGLIO   +5 more
doaj   +1 more source

UEG Week 2016 Poster Presentations [PDF]

United European Gastroenterol J, 2016
United European Gastroenterology Journal, Volume 4, Issue S5, Page A157-A720, October 2016.
europepmc   +2 more sources

The Determination of Steady-State Movements Using Blade Tip Timing Data

, 2018
One of the main challenges of the Blade Tip Timing (BTT) measurement method is to be able to determine the sensing position of the probe relative to the blade tip.
Russhard, Peter, Mohamed, Mohamed, Philip Bonello, Bonello, Philip, Peter Russhard, Mohamed Mohamed   +5 more
core   +1 more source

Blade Tip Timing and Blade Tip Clearance Measurement System Based on Magnetoresistive Sensors [PDF]

, 2016
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.
Tomassini, Roberto
core