Results 41 to 50 of about 131 (106)

Study on identification of modal parameters of mistuned bladed disks (Identification by use of the frequency response curve and the reduced order model)

Nihon Kikai Gakkai ronbunshu, 2023
To develop turbomachinery blades with high reliability, it is indispensable to verify the natural frequency, damping, resonant stress, etc. under operating condition, and utilize these data in the mechanical design of a new blade.
Yasutomo KANEKO, Toshio WATANABE, Tatsuya FURUKAWA   +2 more
doaj   +1 more source

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

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

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

Vibration Parameters Estimation by Blade Tip-Timing in Mistuned Bladed Disks in Presence of Close Resonances

Applied Sciences, 2020
The present paper is focused on the post processing of the data coming from the Blade Tip-Timing (BTT) sensors in the case where two very close peaks are present in the frequency response of the vibrating system.
Saeed Bornassi, Christian Maria Firrone, Teresa Maria Berruti   +2 more
doaj   +1 more source

Study on identification of modal parameters of turbomachinery blade and impeller

Nihon Kikai Gakkai ronbunshu, 2020
To develop turbomachinery blades with high reliability, it is indispensable to verify the natural frequency, the damping, the resonant stress, etc. under operating condition, and utilize these data in the mechanical design of a new blade.
Yasutomo KANEKO, Kazushi MORI, Tatsuya FURUKAWA   +2 more
doaj   +1 more source

Blade Tip-timing Technology with Multiple Reference Phases for Online Monitoring of High-speed Blades under Variable-speed Operation

Measurement Science Review, 2018
High-speed blades form core mechanical components in turbomachines. Research concerning online monitoring of operating states of such blades has drawn increased attention in recent years.
Ji-wang Zhang, Lai-bin Zhang, Ke-Qin Ding, Li-xiang Duan   +3 more
doaj   +1 more source

23rd Congress of the European Hematology Association Stockholm, Sweden, June 14‐17, 2018

, 2018
HemaSphere, Volume 2, Issue S1, Page 1-1113, June 2018.
wiley   +1 more source