2016
DOI: 10.1115/1.4032376
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Analysis of the Reliability of a Jet Engine Compressor Rotor Blade Containing a Fatigue Crack

Abstract: The reliability of a jet engine compressor rotor blade containing a fatigue crack has been assessed based on the eddy current inspection (ECI) response of both the actual rotor blade and bolt hole specimens containing cracks of known lengths. The detection threshold and the probability of detection (POD) curve have been determined. A dynamic Bayesian network (DBN) model was used to quantify uncertainties. The model encompasses a realistic ECI response model, so that it is possible to consider all relevant insp… Show more

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Cited by 18 publications
(12 citation statements)
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“…Mokhtar et al [54] developed an evaluation methodology for the structural reliability of corroded interdependent pipe networks by using BNs, whose structure was constructed using the structural relationships of the pipelines and segments. Lee and Achenbach [55] analyzed the reliability of a jet engine compressor rotor blade with a fatigue crack by using DBNs; the structure of the DBNs was based on a fatigue crack growth model, and the parameters in the model were represented by the nodes. In [56], a similar method was used for the structural reliability analysis of stress corrosion crack growth.…”
Section: B Structural Reliability Evaluation With Bnsmentioning
confidence: 99%
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“…Mokhtar et al [54] developed an evaluation methodology for the structural reliability of corroded interdependent pipe networks by using BNs, whose structure was constructed using the structural relationships of the pipelines and segments. Lee and Achenbach [55] analyzed the reliability of a jet engine compressor rotor blade with a fatigue crack by using DBNs; the structure of the DBNs was based on a fatigue crack growth model, and the parameters in the model were represented by the nodes. In [56], a similar method was used for the structural reliability analysis of stress corrosion crack growth.…”
Section: B Structural Reliability Evaluation With Bnsmentioning
confidence: 99%
“…Certain parameter learning algorithms with incomplete data have been developed and used in the field of BN-based reliability engineering. For example, Lee and Achenbach [55] calibrated the parameters of DBNs for the reliability analysis of the rotor blade of a jet engine compressor by using an expectation maximization algorithm for the incomplete available inspection data. A similar method was used in [56] for the structural reliability analysis of stress corrosion crack growth.…”
Section: B Structural Reliability Evaluation With Bnsmentioning
confidence: 99%
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“…Sankararaman et al 1 pointed out that the uncertainties originate from physical or natural variability, data uncertainty, and model uncertainty. Sensitivity analysis shows that the initial crack length is one of the factors that significantly affects the variability of the predicted crack length 1,2 . Hence, the distribution parameters must be estimated accurately to ensure the credibility of the predictions.…”
Section: Introductionmentioning
confidence: 99%