Experimental and analytical investigation for fatigue crack growth characteristics of an aero-engine fan disc

Huang, Xiannian; Chen, Chuanyong; Hu, Xuan

doi:10.1016/j.ijfatigue.2021.106252

Cited by 13 publications

(3 citation statements)

References 17 publications

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“…The idealized rectangular plate model closely approximates irregular crack planes, making it suitable for weight function calculations. It can automatically determine the crack location, supporting numerous sampling calculations 30 . Schematic descriptions of the determination methods for the rectangular plate model for three different crack forms are provided in Figure 8.…”

Section: Probabilistic Long Fcg Lifetime Modelmentioning

confidence: 99%

“…It can automatically determine the crack location, supporting numerous sampling calculations. 30 Schematic descriptions of the determination methods for the rectangular plate model for three different crack forms are provided in Figure 8. The rectangular plate model is implemented as follows: Firstly, the crack position on the maximum principal stress plane is determined, and the type of crack is identified.…”

Section: Geometric Substitution Of Structural Componentsmentioning

confidence: 99%

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Zone‐based failure risk assessment of fatigue crack growth caused by initial defects in powder turbine disc

Wang,

Kong,

Cao

et al. 2024

Quality & Reliability Eng

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In this research, A zone‐based failure risk assessment (FRA) method of fatigue crack growth (FCG) caused by initial defects in the FGH96 alloy turbine disc is developed. Firstly, the initial defects distribution in the FGH96 alloy turbine disc is calculated based on the defect data. Subsequently, a probabilistic short FCG life model is established, taking into account the dispersion in grain size. Meanwhile, a probabilistic long FCG life model is established, incorporating the life dispersion factor. To calculate the Stress Intensity Factor (SIF) at any position of the disc, the general weight function method and the rectangular plate model are established. Finally, the zoning process is established, enabling a FRA that considers the FCG due to initial defects. The results indicate that the number of cycles corresponding to a 0.13% failure probability of the turbine disc is 7150, and the percentage of failures in each zone is analyzed.

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Section: Probabilistic Long Fcg Lifetime Modelmentioning

confidence: 99%

Section: Geometric Substitution Of Structural Componentsmentioning

confidence: 99%

Zone‐based failure risk assessment of fatigue crack growth caused by initial defects in powder turbine disc

Wang,

Kong,

Cao

et al. 2024

Quality & Reliability Eng

View full text Add to dashboard Cite

show abstract

“…Up to now, lots of K-solution methods have been developed for cracks in the firtree groove structure of a turbine disk, such as the finite element method (FEM) (Boulenouar et al, 2014;Huang et al, 2021;Moustabchir et al, 2015Moustabchir et al, , 2017Shlyannikov et al, 2016) and machine learning (ML). The finite element method usually becomes a reliable method to generate accurate K solutions.…”

Section: Introductionmentioning

confidence: 99%

Estimation of stress intensity factor for surface cracks in the firtree groove structure of turbine disk using pool-based active learning with Gaussian Process Regression

Guo,

Liu,

Yan

et al. 2024

Journal of Theoretical and Applied Mechanics

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Calculation of the stress intensity factor K is a crucial and difficult task in linear elastic fracture mechanics. With the capacity to solve complex input-output problems of an underlying system, machine learning is especially useful in the calculation of K. However, when faced with complex systems, such as the firtree groove structure of a turbine disk, the data--consuming issue has always been a thorny problem in K-solutions combined with machine learning studies for a long time. In this paper, a novel K-solution method called PA-GPR (Pool-based Active learning with Gaussian Process Regression) for the calculation of the stress intensity factor for surface cracks in the firtree groove structure of a turbine disk is proposed. Using the pool-based active learning strategy, the proposed K-solution method could make the GPR model have a great regression performance with a few samples required. In the pool-based active learning strategy analysis, the learning function based on greedy sampling is proposed to select samples with a high contribution to the training of the GPR model. The calculation of K for a semi-elliptical surface crack in the firtree groove structure is evaluated to verify the accuracy and effectiveness of the proposed method. The results show that this novel method is accurate, time-saving and effective.

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Simulation and experimental research on vibration response of microcracked compressor blades under variable working conditions

Wang,

Guo,

Wang

et al. 2024

Applied Acoustics

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Experimental and analytical investigation for fatigue crack growth characteristics of an aero-engine fan disc

Cited by 13 publications

References 17 publications

Zone‐based failure risk assessment of fatigue crack growth caused by initial defects in powder turbine disc

Zone‐based failure risk assessment of fatigue crack growth caused by initial defects in powder turbine disc

Estimation of stress intensity factor for surface cracks in the firtree groove structure of turbine disk using pool-based active learning with Gaussian Process Regression

Simulation and experimental research on vibration response of microcracked compressor blades under variable working conditions

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