Literature review of fatigue assessment methods in residual stressed state

Vaara, Joona; Kunnari, Aleksi; Frondelius, Tero

doi:10.1016/j.engfailanal.2020.104379

Cited by 48 publications

(12 citation statements)

References 91 publications

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“…Furthermore, a GP can make the model very flexible through the design of different kernel functions, and the appropriate kernel function can be selected according to the actual physical process. This method is widely used in mechanical performance evaluation, life prediction, financial stock trends, and other fields [ 31 , 32 , 33 , 34 ].…”

Section: Methodsmentioning

confidence: 99%

A Gaussian Process State Space Model Fusion Physical Model and Residual Analysis for Fatigue Evaluation

Yin

Zhou

Liang

2022

Sensors

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Residual stress is closely related to the evolution process of the component fatigue state, but it can be affected by various sources. Conventional fatigue evaluation either focuses on the physical process, which is limited by the complexity of the physical process and the environment, or on monitored data to form a data-driven model, which lacks a relation to the degenerate process and is more sensitive to the quality of the data. This paper proposes a fusion-driven fatigue evaluation model based on the Gaussian process state–space model, which considers the importance of physical processes and the residuals. Through state–space theory, the probabilistic space evaluation results of the Gaussian process and linear physical model are used as the hidden state evaluation results and hidden state change observation function, respectively, to construct a complete Gaussian process state–space framework. Then, through the solution of a particle filter, the importance of the residual is inferred and the fatigue evaluation model is established. Fatigue tests on titanium alloy components were conducted to verify the effectiveness of the fatigue evaluation model. The results indicated that the proposed models could correct evaluation results that were far away from the input data and improve the stability of the prediction.

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Section: Methodsmentioning

confidence: 99%

A Gaussian Process State Space Model Fusion Physical Model and Residual Analysis for Fatigue Evaluation

Yin

Zhou

Liang

2022

Sensors

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“…Residual stresses have a significant influence on the engineering properties of materials and structural components such as fatigue life, corrosion resistance and resistance to brittle fracture. They constitute one of the major factors determining the structural integrity of engineering components and the control of its underlying mechanisms is of great interest during the design and manufacturing of products (Webster and Ezeilo, 2001;Vaara et al, 2020). Residual stresses are due to spatial gradients of irreversible strains which typically originate from heterogeneous plastic deformation or phase transition.…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of heterogeneous surface residual-stresses in metallic materials from X-ray diffraction measurements

Morin

Braham

Tajdary

et al. 2021

Mechanics of Materials

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“…Shot peening (SP) is a mechanical treatment applied to the surface of metals to introduce residual compressive stresses that increase resistance to fatigue fracture 14 , 15 . It is based on the fact that the impact of perfect spheres on a surface produces a superficial plastic deformation and generates stresses.…”

Section: Introductionmentioning

confidence: 99%

“…It is based on the fact that the impact of perfect spheres on a surface produces a superficial plastic deformation and generates stresses. Although the layers below the surface are also affected by the stresses produced, they do not reach plastic deformation and therefore try to return to their original state due to their elasticity; however, the process of returning to their original state is impeded by the plastic deformation of the outer layer and, as a consequence, the underlying layers remain in a stressed state and the residual compressive stresses are finally generated both on the surface and slightly inside the material 15 , 16 .…”

Section: Introductionmentioning

confidence: 99%

Shot peening increases resistance to cyclic fatigue fracture of endodontic files

Nino-Barrera

Sanchez-Aleman

Acosta-Humánez

et al. 2021

Sci Rep

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The objective of this study was to assess the resistance to fatigue fracture of conventional nickel–titanium files after undergoing shot peening. Forty NITIFLEX endodontic files, number 30, were divided into two groups; one was submitted to shot peening treatment and the other was not. All instruments were tested for fatigue fracture in simulated canals with a TRI-AUTO ZX endodontic motor. One file of each group was subjected to a residual stress analysis by XRD. Finally, the fractured surface was observed and elemental analysis performed by means of SEM and EDX. Roughness analysis was made by focal variation microscope. The shot peening group showed greater resistance to fatigue fracture; there was no difference in the length of the fractured fragments. XRD results showed the presence of residual compression stresses in the file submitted to shot peening, a decrease in the interplanar spacing, and an increase in the full-width-at-half-maximum and the microstrains. SEM and EDX showed a ductile fracture with zones of fatigue and an equiatomic ratio between the nickel and titanium. Surface roughness increased after the file was subjected to the shot peening procedure. In conclusion, shot peening increases the resistance to fatigue fracture due to the presence of residual compression stresses in files manufactured from a conventional nickel–titanium alloy.

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Literature review of fatigue assessment methods in residual stressed state

Cited by 48 publications

References 91 publications

A Gaussian Process State Space Model Fusion Physical Model and Residual Analysis for Fatigue Evaluation

A Gaussian Process State Space Model Fusion Physical Model and Residual Analysis for Fatigue Evaluation

Reconstruction of heterogeneous surface residual-stresses in metallic materials from X-ray diffraction measurements

Shot peening increases resistance to cyclic fatigue fracture of endodontic files

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