Results 241 to 250 of about 1,097,882 (270)

BLADE-TIP TIMING MEASUREMENT OF SYNCHRONOUS VIBRATIONS OF ROTATING BLADED ASSEMBLIES

Mechanical Systems and Signal Processing, 2002
Blade-tip timing (BTT) is a promising method for the detection, measurement and analysis of blade vibrations in rotating bladed assemblies. However, the intricacies of the method when applied to real rotating structures undergoing synchronous (Engine Ordered) vibrations are not yet fully understood.
G. DIMITRIADIS, I.B. CARRINGTON, J.R. WRIGHT, J.E. COOPER   +3 more
openaire   +1 more source

Analysis of blade vibration frequencies from blade tip timing data

SPIE Proceedings, 2010
Blade tip timing is a non-intrusive technique used for detection, measurement and analysis of blade vibration in rotating blade assemblies. The main recent focus in the application of blade tip timing system has been the determination of blade vibration frequencies.
Menglin Li, Fajie Duan, Tao Ouyang
openaire   +1 more source

Blade Tip Timing: from Raw Data to Parameters Identification

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2019
Blade Tip Timing (BTT) methods have been increasingly implemented for blade health monitoring. However, most of them are based on the prior knowledge that the resonance’s location is known. Since real BTT test usually takes more than ten hours, it’s unrealistic to Figure out every resonance from the measured raw data manually.
Shuming Wu, Xuefeng Chen 0002, Pete Russhard, Ruqiang Yan 0001, Shaohua Tian, Shibin Wang, Zhibin Zhao 0002   +6 more
openaire   +1 more source

On the development of a magnetoresistive sensor for blade tip timing and blade tip clearance measurement systems

AIP Conference Proceedings, 2014
A simultaneous blade tip timing (BTT) and blade tip clearance (BTC) measurement system enables the determination of turbomachinery blade vibrations and ensures the monitoring of the existing running gaps between the blade tip and the casing. This contactless instrumentation presents several advantages compared to the well-known telemetry system with ...
TOMASSINI, ROBERTO, ROSSI, Gianluca, Brouckaert, J. F.   +2 more
openaire   +2 more sources

Sensing Limit in Blade Tip Timing Measurement and Underlying Theory

Mechanical Systems and Signal Processing
Blade Tip Timing (BTT) is a promising non-contact technique for measuring blade vibrations in rotating machinery due to its minimal hardware intrusion and long service life. However, the inherent mismatch between the high vibration frequencies of the blades and the relatively low sampling rates achievable in practice leads to severe undersampling ...
Jiahui Cao, Shuming Wu, Zhibo Yang, Minyue Lu, Liqin Lu, Ruqiang Yan, Xuefeng Chen   +6 more
openaire   +1 more source

Blade-Tip Timing Measurement Of Synchronous Vibrations Of Rotating Bladed

2002
Blade-tip timing (BTT) is a promising method for the detection, measurement and analysis of blade vibrations in rotating bladed assemblies. However, the intricacies of the method when applied to real rotating structures undergoing synchronous (Engine Ordered) vibrations are not yet fully understood.
Dimitriadis, Grigorios, Carrington, Ian B., Wright, Jan Robert, Cooper, Jonathan E   +3 more
openaire   +1 more source

Calibration of blade tip-timing sensor for shrouded 40″ last stage blade

Mechanical Systems and Signal Processing, 2018
Abstract Today’s power generation market requests steam turbines of high efficiency, reliability and wide operation range. The last stage moving blades are designed with integral shroud, mid-span, and fir-tree dovetail. The blades are continuously coupled by the blade untwist due to the centrifugal force, and thus the vibration control and increased ...
Kubín, Z., Mísek, T., Hlous, J., Dadaková, T., Kellner, J., Bachorec, T.   +5 more
openaire   +1 more source

A blade damage identification method based on bladed disk modal analysis and blade tip timing

Aerospace Science and Technology
Blade damage diagnosis is a critical requirement for ensuring operational safety and reliability in aero-engines and gas turbines. Blade tip timing (BTT) is a well-established non-contact vibration monitoring technique. However, most existing damage detection methods focus on single-blade response analysis, which suffers from diagnostic latency and can
Pengfei Chai, Shang Wang, Yiming Meng, Zhicheng Xiao, Jie Tian, Yong Chen, Hua Ouyang   +6 more
openaire   +1 more source

Rotating blade frequency identification by single-probe blade tip timing

Mechanical Systems and Signal Processing, 2022
Jia-Hui Cao, Zhi-Bo Yang, Hao-Qi Li, Guang-Rong Teng, Shao-Hua Tian, Wen-Bo Li, Xue-Feng Chen   +6 more
openaire   +1 more source

Triggering Methods in Blade Tip-timing Systems

2016
Radosław Przysowa, Kaźmierczak, Krzysztof   +1 more
openaire   +1 more source