Results 61 to 70 of about 233 (128)

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

Identification of Asynchronous Blade Vibration Parameters by Linear Regression of Blade Tip Timing Data

, 2018
Fracture of blades is usually catastrophic and creates serious damages in the turbomachines. Blades are subjected to high centrifugal force, oscillating stresses, and high temperature which makes their life limited.
Arash Mikaeily, Abbas Rohani Bastami, Pedram Safarpour, Mohammad Mohammadi   +3 more
core   +1 more source

Modelling and experimental validation of active and passive eddy current sensors for blade tip timing [PDF]

, 2019
To monitor the vibration of blades in rotating machinery, the contactless method called Blade Tip Timing (BTT) is widely used. blade vibration and clearance are important diagnostic features for condition monitoring, including the detection of blade ...
Nidhal Jamia, Michael Friswell
core   +1 more source

Experimental validation of FEM-computed stress to tip deflection ratios of aero-engine compressor blade vibration modes and quantification of associated uncertainties

, 2022
Blade Tip Timing (BTT) technology is concerned with the estimation of turbomachinery blade stresses. The stresses are determined from BTT data by relating the measured tip deflection to the stresses via Finite Element (FE) models.
Mekhalfia, Mohammed Lamine, Russhard, Peter, Mohamed, Mohamed Elsayed, Tchuisseu, Eder Batista Tchawou, Bonello, Philip, Procházka, Pavel   +5 more
core   +1 more source

Synchronous vibration parameters identification by tip timing measurements [PDF]

, 2017
The Blade Tip Timing (BTT) measurement system is a technique to measure vibration parameters of a rotating bladed disk. In particular for synchronous vibrations the BTT provides signals versus the rotation speed of the disk starting from the measurement ...
Rigosi, Giovanni, Berruti, Teresa Maria, Battiato, Giuseppe   +2 more
core   +1 more source

Validating Blade Vibration Amplitudes from Blade Tip-Timing Data Analysis

, 2004
peer reviewedBlade Tip-Timing (BTT) is a method for the measurement of blade vibration in rotating bladed assemblies such as those found in turbomachinery.
Gallego-Garrido, Jon, Dimitriadis, Grigorios   +1 more
core  

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

A Stochastic Hybrid Blade Tip Timing Approach for the Identification and Classification of Turbomachine Blade Damage [PDF]

, 2017
Dissertation (MEng)--University of Pretoria, 2017.Blade Tip Timing (BTT) has been in existence for many decades as an attractive vibration based condition monitoring technique for turbomachine blades.

core  

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