Fault diagnosis of aircraft gas turbine engine by vibration analysis
Journal Title: Jurnalul Stiintific TURBO - Year 2017, Vol 4, Issue 2
Abstract
The experimental identification of mechanical system of aircraft engine is achieved through a detailed research of the engine vibration behavior. The instrumentation and signal processing technologies existing today determine more precisely the required parameters for the calculation of engine lifetime than theoretical calculations. These parameters have a big impact on the operational safety and the maintenance process of aircraft. The experimental vibration analysis area is extensive and involves several other fields: vibration measurement, signal processing, mathematics and statistics, problems on systems vibration with several degrees of freedom, different damping models, etc. This work focuses on finding and applying reliable methods for the experimental identification of mechanical structures of aircraft gas turbine engine. The first step on the identification process is the definition of the type of experiments to be done (or experimental model). The purpose of the experimental model must to be clearly defined at the beginning because it affects the experimental conditions. The experimental identification of the dynamic behavior consists on finding of the transfer function, also called frequency response function (FRF), which best describes the mechanical components of the engine analyzed.
Authors and Affiliations
Lica FLORE
Keywords
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