Journal ArticleDOI
Vibration based damage detection of rotor blades in a gas turbine engine
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TLDR
In this article, the authors describe the problems concerning turbine rotor blade vibration that seriously impact the structural integrity of a developmental aero gas turbine, where the blades are fabricated from nickel base super alloy through directionally solidified investment casting process.About:
This article is published in Engineering Failure Analysis.The article was published on 2014-11-01. It has received 89 citations till now. The article focuses on the topics: Turbine blade & Rotor (electric).read more
Citations
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Performance-based health monitoring, diagnostics and prognostics for condition-based maintenance of gas turbines: A review
TL;DR: In this paper, a systematic review of recently developed engine performance monitoring, diagnostic and prognostic techniques is presented, which provides experts, students or novice researchers and decision-makers working in the area of gas turbine engines with the state of the art for performance-based condition monitoring.
Journal ArticleDOI
Blade resonance parameter identification based on tip-timing method without the once-per revolution sensor
TL;DR: In this article, a synchronous resonance vibration measurement method of blade based on tip-timing is presented, which requires no once-per-revolution sensor which makes it more generally applicable in the condition where this sensor is difficult to install, especially for the high-pressure rotors of dual-rotor engines.
Journal ArticleDOI
A Review of NDT/Structural Health Monitoring Techniques for Hot Gas Components in Gas Turbines
Frank Mevissen,Michele Meo +1 more
TL;DR: The main failure modes of turbines are reported, and the existing monitoring techniques for these components, with their own particular advantages and disadvantages, are summarised in this review.
Journal ArticleDOI
Physical constraints fused equiangular tight frame method for Blade Tip Timing sensor arrangement
TL;DR: An iterative reweighted L1-norm based parameter identification method is applied to obtain the vibration parameters from the highly undersampled BTT data with better amplitude reconstruction accuracy.
Journal ArticleDOI
Vibration analysis for detecting failure mode and crack location in first stage gas turbine blade
TL;DR: In this article, a case study is presented in order to detect failure mode and locate cracks on a 30 MW first stage gas turbine blade made of nickel based super alloy IN738LC, which has failed after rendering a useful life of 72000 h.
References
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Journal ArticleDOI
An optical fiber bundle sensor for tip clearance and tip timing measurements in a turbine rig.
Iker García,Josu Beloki,Joseba Zubia,Gotzon Aldabaldetreku,María Asunción Illarramendi,F. Jiménez +5 more
TL;DR: The results obtained on the test turbine rig demonstrate the suitability and reliability of the type of sensor used, and suggest the possibility of performing these measurements in real turbines under real working conditions.
Journal ArticleDOI
Failure analysis of a third stage gas turbine blade
TL;DR: In this paper, the authors investigated a third stage turbine blade failure in the 150MW unit of a thermal power plant and found that high cycle fatigue originated by fretting on the fir tree lateral surface (i.e. fretting fatigue).
Journal ArticleDOI
Failure analysis of a set of compressor blades
TL;DR: In this paper, the root causes of the failure of a set of blades belonging to the high pressure compressor of an aircraft engine were analyzed using a fractographic analysis by scanning electron microscopy and a microstructural study using both scanning and optical microscopy.
Journal ArticleDOI
Failure of a low pressure turbine rotor blade of an aeroengine
TL;DR: In this paper, a low-pressure turbine rotor blade had failed during a test run of an aeroengine, during which a Ni-base superalloy of CM 247 LC grade was fabricated by DS investment casting.
Journal ArticleDOI
Crack modeling of rotating blades with cracked hexahedral finite element method
Chao Liu,Dongxiang Jiang +1 more
TL;DR: In this paper, a cracked hexahedral finite element method for dynamic analysis of cracked blades is presented, with the purpose of addressing the contradiction between accuracy and efficiency in crack modeling of blades in rotor system.
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Blade resonance parameter identification based on tip-timing method without the once-per revolution sensor
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