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Journal of Low Frequency Noise Vibration and Active Control, 2021 Rotating blade is one of the most important components for turbomachinery. Blade crack is one of the most common and dangerous failure modes for rotating blade. Therefore, the fault mechanism and feature extraction of blade crack are vital for the safety
Zhu Mao, Xuefeng Chen, Ruqiang Yan
exaly +2 more sources
Wavelet Transform-Based Damage Identification in Bladed Disks and Rotating Blades [PDF]
Shock and Vibration, 2018 Blade vibration and blade clearance are effective diagnostic features for the identification of blade damage in rotating machines. Blade tip-timing (BTT) is a noncontact method that is often used to monitor the vibration and clearance of blades in a ...
P. Rajendran +3 more
doaj +4 more sources
Impact of the Closed, Semi-Opened, and Combined Contra-Rotating Stages on Volume Loss Characteristics [PDF]
Журнал інженерних наук, 2022 The article is devoted to studying the contra-rotating stages with different impellers and blade discs. Determining the reduction of volumetric losses by modeling the contra-rotating stages in the software package ANSYS CFX.
Kulikov O. +4 more
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Rotating blade propellers in prospective aviation technology [PDF]
E3S Web of Conferences, 2023 The study proposes the use of a new generation of aircraft based on the use of cylindrical rotating blade propellers as a means of transportation. The results of research and development work carried out on several dimensions of cylindrical rotating ...
Prokhorov Viktor +4 more
doaj +1 more source
Frontiers in Physics, 2023 Introduction: In the present paper, experiments for a contra-rotating axial fan have been conducted to investigate the influences of the fan parameters including axial distance, blade number, blade pattern and blade thickness on the performance and noise
Yanjie Zhao +4 more
doaj +1 more source
Analysis and Calibration of Blade Tip-Timing Vibration Measurement Under Variable Rotating Speeds
IEEE Access, 2021 Blade tip timing (BTT) vibration measurement is a promising on-line blade monitoring method, but various uncertainties bring great challenge in engineering applications. Most existing works are based on the assumption of constant rotating speeds. However,
Zhongsheng Chen +3 more
doaj +1 more source
Review of research on tip-timing and tip clearance measurement technology
Journal of Hebei University of Science and Technology, 2021 Turbine blades will fail due to fatigue fracture caused by vibration at high-speed rotation,resulting in damage of rotating machinery.Blade tip-timing measurement technology is the most promising non-contact blade vibration real-time monitoring method at
Liang ZHANG +3 more
doaj +1 more source
Modelling of Work of the Rotor-Type Blade Pump with Revolving Stator
International Journal of Applied Mechanics and Engineering, 2021 In the article, the analytical dependences of modelling the cell cross-sectional area between two adjacent blades of a rotary blade pump and capacity for a pump with fixed and rotating stators are given, and analytical dependences are derived to model ...
V.T. Dmytriv +3 more
doaj +1 more source
Determination of angle of attack for rotating blades [PDF]
INCAS Bulletin, 2012 For a rotating blade the flow passing by a blade section is bended due to the rotation and the local flow field is influenced by the bound circulation on the blade. As a further complication, 3-D effects from tip and root vortices do a precise definition
Alexandru DUMITRACHE +3 more
doaj +1 more source
Machines, 2022 Lightning accidents seriously threaten safe operation of wind turbines because the influence mechanisms of wind turbine rotation on corona and upward leader initiation are, so far, not clear.
Wanshui Yu +3 more
doaj +1 more source