An integrated engine health monitoring system for gas turbine aero-engines

2003 ◽  
Author(s):  
G.F. Tanner
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Health Monitoring ◽  
Health Monitoring System ◽  
Aero Engines

Nonlinear Model Based Diagnostic of Gas Turbine Faults: A Case Study

2011 ◽  
Author(s):  
Yongwen Liu ◽  
Ming Su
Keyword(s):  
Gas Turbine ◽  
Dynamic Model ◽  
Monitoring System ◽  
Health Monitoring ◽  
Component Level ◽  
Health Monitoring System ◽  
Model Based ◽  
Dynamic Tracking ◽  
Tracking Filter

During the lifetime of a gas turbine, its gas path components deteriorate gradually and sometimes serious problems happened. Direct physical and indirect model based methods can be used in health monitoring systems for gas turbines. The gas turbine under study is run as part of a combined cycle generation unit, sited in the BAO Steel Power Plant. The basic health monitoring system is based on vibration signal. After the vibration monitoring system failed to detect foreign object damage (FOD) fault, a health monitoring system based thermodynamic model is tried to explain quantitatively why the performance degradation happened, with the foreseeable usage as part of the online health monitoring system. The present work is based upon component level nonlinear gas turbine model, so errors caused by linearization can be avoided. The component level model of gas turbine is built as dynamic model, and the off-design performance of gas turbine is evaluated as the steady-state solution of the dynamic model. A dynamic tracking filter, which tracking field measurements with PI control loops, is incorporated into the gas turbine dynamic model. Output of the dynamic tracking filter is called correction factors, which are used as multiplicative corrective values of component performance parameters (i.e., flow or efficiency) in the gas turbine model. With dynamic tracking filter and aero-thermal dynamic model, the model based fault diagnosing of gas turbine is implemented as a three step process. As a case study, several measurement data sets are tried to detect and isolate FOD fault happened. The result demonstrates that a model based gas path analysis can detect and isolate fault even when no vibration level alarm is reported.

Online Health Monitoring System Using Dynamic Structural Responses

2017 ◽  
Author(s):  
Amit K. Paspulati ◽  
Krishna C. Veluru ◽  
Kashinath Akki
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Health Monitoring ◽  
Crack Detection ◽  
Field Measurements ◽  
Fatigue Loading ◽  
Flexible Pipe ◽  
Engine Operation ◽  
Health Monitoring System ◽  
Long Duration

This paper discusses the methodology for detection of impending failures in gas turbine components. Gas turbine components when exposed to fatigue loading are prone to crack initiation and propagation (structural failure) during operation. Cracks when left undetected over the long duration of continuous engine operation may lead to failure of gas turbine components and unplanned shutdown. This paper presents the crack detection methodology proposed to be only used in older engines maintained by the service fleet. This is done by capturing the changes in physical characteristics of cracked gas turbine structures during engine operation. Monitoring the change in vibration characteristics is being proposed as an input in developing the health monitoring system. In verifying the proposed technique, static component such as flexible pipe is analytically evaluated and validated with field measurements.

Implementation of Portable Health Monitoring System for Soldiers Using Virtex FPGA Kit

2015 ◽  
Vol 4 (2) ◽  
pp. 5-12
Author(s):  
B. Ponmalathi ◽  
◽  
M. Shenbagapriya ◽  
M. Bharanidharan ◽  
◽  
...  
Keyword(s):  
Monitoring System ◽  
Health Monitoring ◽  
Health Monitoring System
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