A Probabilistic Framework for Risk Prediction of Gas Turbine Engine Components With Inherent or Induced Material Anomalies

Abstract

Rare anomalies may be introduced during the metallurgical or manufacturing processes that may lead to uncontained failures of aircraft gas turbine engines. The risk of fracture associated with these anomalies can be quantified using a probabilistic fracture mechanics approach. In this paper, a general probabilistic framework is presented for risk assessment of gas turbine engine components subjected to either inherent or induced material anomalies. A summary of efficient computational methods that are applicable to this problem is also provided.

Quantitative Non-Destructive Testing: The integration of non-destructive testing and probabilistic fracture mechanics

“…The main field of application for the probabilistic approach is pressure vessel and piping assessment (Dillström et al 1993;Rahman 1997;R6 1998;Bollough et al 1999;Lam et al 2001). Some applications can also be found in the aerospace industry (Cioclov et al 2003;Enright et al 2005).…”