Life Extension Methodologies and Risk-Based Inspection in the Management of Fracture Critical Aeroengine Components
Abstract
This paper briefly describes the main methodologies used in the assessment of fracture critical parts. The development of a procedure for the quantitative assessment of non-finite results is discussed and typical life extension levels are illustrated. Risk assessment is considered within the context of the safe life methodology. It is used to quantify the potential risks associated with the short-term continued operation of life-expired parts and to allow their managed withdrawal. The paper then considers risk assessment applied to the damage tolerance and retirement for cause life assessment. The significance benefits of risk based inspections intervals over standard fixed inspections are illustrated. - Finally with regard to retirement for cause, it is shown that a risk based approach automatically sets an economical limit to retirement for cause but avoids the progressive risk levels associated with the current embodiment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2003
- Accession Number
- ADP014071
Entities
People
- A. D. Boyd-lee
- D. Painter
- G. F. Harrison