Results 1 to 10 of about 4,321 (293)

Experimental Investigation: Vibration Measurement of a Rotating Blade with Digital Image Correlation and Blade Tip-Timing

Micromachines, 2022
High cycle fatigue has been known as an important form of aeroengine blade failure. This study aims to achieve a method of investigation for a rotating blade vibration measurement, combining the two non-contact optical techniques of digital image ...
Zhonghan Liang, Yuxiang Zhang, Lin Yue
doaj   +6 more sources

A Torsional Vibration Measurement Method for Rotating Blades Based on Blade Tip Timing [PDF]

Shock and Vibration, 2021
During the working process of the turbine, some types of faults can cause changes in the vibration characteristics of the blades. The real-time vibration monitoring of the blades is of great significance to the stable operation and state-based ...
Haonan Guo, Yongmin Yang, Fengjiao Guan, Haifeng Hu, Guoji Shen, Suiyu Chen, Zifang Bian   +6 more
doaj   +3 more sources

Sparse Representation Based Frequency Detection and Uncertainty Reduction in Blade Tip Timing Measurement for Multi-Mode Blade Vibration Monitoring

Sensors, 2017
The accurate monitoring of blade vibration under operating conditions is essential in turbo-machinery testing. Blade tip timing (BTT) is a promising non-contact technique for the measurement of blade vibrations.
Minghao Pan, Yongmin Yang, Fengjiao Guan, Haifeng Hu, Hailong Xu   +4 more
doaj   +4 more sources

Accuracy Evaluation Method for Blade Vibration Measurement in Blade Tip Timing Based on Direct Calibration Using Time of Arrival [PDF]

Sensors
Non-contact blade vibration measurement based on blade tip timing (BTT) is a signature method for health monitoring in large rotating machinery. Time of arrival (ToA), as the fundamental data in BTT, directly impacts the accuracy of subsequent vibration ...
Qi Zhou, Guangyue Niu, Meiru Liu, Guangrong Teng, Fajie Duan, Fangyi Li, Hao Liu, Fafu Li   +7 more
doaj   +3 more sources

Pulsation and Vibration Measurement on Stator Side for Turbocharger Turbine Blade Vibration Monitoring

International Journal of Turbomachinery, Propulsion and Power, 2020
Mechanically robust turbine design with respect to blade vibration is challenging when dealing with nozzle-ring fouling and wear. Especially for engines operating with heavy fuel oil (HFO), the nozzle rings of the turbocharger turbines are prone to ...
Takashi Ando
doaj   +4 more sources

Blade Vibration Difference-Based Circumferential Fourier Fitting Algorithm for Synchronous Vibration Parameter Identification of Rotation Blades [PDF]

Sensors
Blades are the core components of rotating machinery, and the blade vibration status directly impacts the working efficiency and safe operation of the equipment.
Zhenfang Fan, Hongkun Li, Jinying Huang, Siyuan Liu   +3 more
doaj   +3 more sources

Synchronous Vibration Parameter Recognition of Constant-Speed Blades Based on Blade Tip Clearance Measurement

Applied Sciences, 2023
A new method for the synchronous vibration parameter identification of constant-speed rotating blades based on blade tip clearance (BTC) measurement and blade tip timing (BTT) is introduced.
Liang Zhang, Yiming Xia, Cong Chen, Qingxi Song, Junjun Cao   +4 more
doaj   +2 more sources

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, Yemei Xia, Hao Sheng, Jing He   +3 more
doaj   +3 more sources

Autonomous Sensor System for Low-Capacity Wind Turbine Blade Vibration Measurement [PDF]

Sensors
This paper presents the design, implementation, and validation of an on-blade sensor system for remote vibration measurement for low-capacity wind turbines.
Diego Muxica, Sebastian Rivera, Marcos E. Orchard, Constanza Ahumada, Francisco Jaramillo, Felipe Bravo, José M. Gutiérrez, Rodrigo Astroza   +7 more
doaj   +2 more sources

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, Qidi WANG, Xin LI, Yuan WANG   +3 more
doaj   +1 more source