Adaptive Risk Refinement Methodology for Gas Turbine Engine Rotor Disks

Moody, Jonathan P.; Millwater, Harry; Enright, Michael P.

doi:10.2514/6.2008-2224

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…Millwater et al [40][41][42][43] developed a convergent zone-refinement method for risk assessment of gas turbine disks which enhances accuracy. A local metric is used to identify zones needing further refinement leading to more accurate solutions.…”

Section: Figure 17 Impact Of Inspections On Extending Residual Life O...mentioning

confidence: 99%

“…Applying this methodology to an impeller the authors readily converged to a solution where the mesh elements were all below the DTR (Figure 26). For more on mesh refinement see Moody, Millwater, and Enright [42] "Adaptive Risk Refinement Methodology for Gas Turbine Engine Rotor Disks" AIAA 2008-2224. It provides a detailed example of using DARWIN's zone-based risk analysis and defines probability functions to analyze an impeller disk component.…”

Section: Figure 17 Impact Of Inspections On Extending Residual Life O...mentioning

confidence: 99%

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Application of probabilistic methods to turbine engine disk life prediction and risk assessment

Copp

Whitney-Rawls

Carter

et al. 2022

Res Intell Manuf Assem

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Turbine engine disk life prediction and understanding the associated risk remains a significant challenge for today’s designer. Despite advances made in materials testing and characterization, as well as, the application of damage tolerance and linear elastic fracture mechanics modeling, there remains a void in properly assessing loading, geometry, and material design property variability. Add to this the application of advanced hybrid and composite material systems and the need to accurately deal with material variability is even greater. There still remain incidents of failure of critical components which were not properly accounted for by the existing analytical methods, testing, and inspections employed today. Application of probabilistic methods offers an effective and useful approach to modeling this variability while also providing a means by which to assess random variable sensitivity and risk assessment. Current research, as well as, applicable industry and government regulatory guidelines and publications were examined and will be presented. An assessment of the most effective tools, modeling methods, and predictive risk of failure assessments together with recommendations for future work will be discussed. The potential for probabilistic methods to provide a cost-effective way to manage fleet engine and component usage is presented, as well as, its ability to enhance the safe implementation of Retirement for Cause concepts to fleet management.

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Section: Figure 17 Impact Of Inspections On Extending Residual Life O...mentioning

confidence: 99%

Section: Figure 17 Impact Of Inspections On Extending Residual Life O...mentioning

confidence: 99%

Application of probabilistic methods to turbine engine disk life prediction and risk assessment

Copp

Whitney-Rawls

Carter

et al. 2022

Res Intell Manuf Assem

View full text Add to dashboard Cite

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Probabilistic Failure Risk Assessment of Aeroengine Disk Considering Manoeuvring Flight

Li,

Huang,

et al. 2024

International Journal of Aerospace Engineering

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Accurately predicting the failure risk of aeroengine disks is a key part of engine safety design. The traditional probabilistic failure risk analysis framework has limitations in the selection of analysis time, risk characterization, and iteration criteria. These limitations restrict the applicability, efficiency, and accuracy of the traditional framework in analysing manoeuvring flights, especially for military aircraft. A new risk analysis framework was established to analyse the failure risk of a disk in manoeuvring flight. A centrifugal compressor disk was analysed during manoeuvring flight. The results showed that the failure risk considering the thermal–mechanical load of manoeuvring flight is approximately three times greater than the risk considering only the thermal–mechanical load at the most dangerous moments, which indicates the necessity of considering manoeuvring flight. This new analysis framework is verified to be superior to the traditional analysis framework in terms of convergence accuracy and efficiency. This work provides a reference for exploring probabilistic damage tolerance in complex environments, which is useful for aeroengine safety design.

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Probabilistic Integration of Material Process Modeling and Fracture Risk Assessment Using Gaussian Process Models

Enright

McFarland

McClung

et al. 2013

54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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Adaptive Risk Refinement Methodology for Gas Turbine Engine Rotor Disks

Cited by 3 publications

References 17 publications

Application of probabilistic methods to turbine engine disk life prediction and risk assessment

Application of probabilistic methods to turbine engine disk life prediction and risk assessment

Probabilistic Failure Risk Assessment of Aeroengine Disk Considering Manoeuvring Flight

Probabilistic Integration of Material Process Modeling and Fracture Risk Assessment Using Gaussian Process Models

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