Modeling Behaviour of Damaged Turbine Blades for Engine Health Diagnostics and Prognostics

The reliability of modern gas turbine engines is largely due to careful damage tolerant design a method of structural design based on the assumption that flaws (cracks) exist in any structure and will continue to grow with usage. With proper monitoring, largely in the form of periodic inspections at conservative intervals reliability and safety is maintained. These methods while reliable can lead to the early retirement of some components and unforeseen failure if design assumptions fail to reflect reality. With improvements to sensor and computing technology there is a growing interest in a system that could continuously monitor the health of structural aircraft as well as forecast future damage accumulation in real-time. Through the use of two-dimensional and three-dimensional numerical modeling the initial goals and findings for this continued work include: (a) establishing measurable parameters directly linked to the health of the blade and (b) the feasibility of detecting accumulated damage to the structural material and thermal barrier coating as well as the onset of damage causing structural failure.

Grantor dc:publisher

Université d'Ottawa / University of Ottawa

Year dc:date

2011

Author dc:creator

• Van Dyke, Jason

Contributors dc:contributor

• Nganbe, Michel

• Numerical method
• TBC
• thermal barrier coating
• turbine blade
• damage turbine blades
• damage
• FEA
• diagnostic system
• prognostic system
• structural health monitoring
• damage modeling
• damage indicators
• finite element method
• ABAQUS
• vibration
• deflection
• elongation

Language dc:language

en

Identifier

http://dx.doi.org/10.20381/ruor-4897

OAI identifier oai:identifier

oai:ruor.uottawa.ca:10393/20312