Results 241 to 250 of about 4,892 (274)

A Hybrid Fault Diagnosis Approach for Blade Crack Detection using Blade Tip Timing

2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2020
The harsh working environment of the compressor hinders the condition monitoring of rotating blades. Blade faults are mostly induced by foreign object damage or high cycle failure due to initial defects. Detecting these failures before blades being broken will not only ensure engine safety but largely reduce repair costs.
Shuming Wu, Zengkun Wang, Haoqi Li, Zhibo Yang 0001, Shaohua Tian, Ruqiang Yan 0001, Shibin Wang, Xuefeng Chen 0002   +7 more
openaire   +1 more source

An integrated measurement method of blade tip clearance and blade vibration based on blade tip timing technology

Proceedings of Global Power & Propulsion Society
Structural parameters measurement of rotating blades is an important issue to ensure long-term safe operation of turbomachinery. Blade tip clearance (BTC) and blade tip vibration (BTV) are essential parameters of rotating blades. Typically, BTC and BTV are measured by two separate systems, which poses a challenge to the available space for the sensors.
Yiming Meng, Zhicheng Xiao, Shang Wang, Pengfei Chai, Hua Ouyang   +4 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

Compressor Blade Tip Timing Using Capacitance Tip Clearance Probes

Volume 1: Turbo Expo 2003, 2003
Turbomachinery blade vibrations of sufficient amplitude cause High Cycle Fatigue, which reduces blade life. In order to observe this vibration a non-intrusive monitoring system is sought. The vibration can be detected by measuring blade tip timing since in the presence of vibration the blade timing will differ slightly from the passing time calculated ...
Craig Lawson, Paul Ivey
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

Blade tip clearance measurement method based on blade tip timing without the once per revolution sensor

Measurement Science and Technology
Abstract The rotor blade tip clearance (BTC) of an aeroengine is a critical parameter that significantly impacts its performance and safety. Accurately determining dynamic BTC has been a focal point of research in experimental testing. Among the effective measurement methods for dynamic BTC, the laser triangulation method based on blade ...
Xiaolei Guo, Huoxing Liu, Zhihong Zhou
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

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

Compressed Covariance Sensing for Blade Tip Timing

2023
Jiahui Cao, Zhibo Yang, Xingwu Zhang, Xuefeng Chen   +3 more
openaire   +1 more source

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

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