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Fatigue Performance and Modeling of Advanced Metal Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Mechanics of Materials".

Deadline for manuscript submissions: 20 August 2025 | Viewed by 2923

Special Issue Editor

Structures and Materials Performance Laboratory, Aerospace Research Center, National Research Council, Ottawa, ON K1A 0R6, Canada
Interests: fatigue; creep; thermomechanical fatigue; constitutive modeling; life prediction
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metallic materials are crucial in engineering applications to bear complex loads in extreme environments, with fatigue being one of the critical failure modes. While basic material fatigue properties are still being assessed through physical testing in accordance with industrial standards, fatigue performance modeling and simulation are increasingly needed in advanced designs of engineering platforms, e.g., aircrafts, leading to certification by analysis (CbA) to save product development costs and time and expand the application envelopes. To achieve CbA with assured safety and credibility, the multi-scale fatigue process—from microscopic defect and damage evolution to the formation of small cracks and their coalescence and the propagation of dominant cracks, leading to macroscopic component fractures—need to be thoroughly understood.

This Special Issue aims to report experimental, theoretical, and numerical studies that would result in the development of conceptual, mathematical, and computational models for physics-based fatigue life prediction, including uncertainty quantification (UQ) of metallic materials.

Dr. Xijia Wu
Guest Editor

Manuscript Submission Information

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Keywords

  • failure
  • fatigue
  • creep
  • component fracture
  • cracks
  • modeling and simulation
  • constitutive modeling

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Published Papers (3 papers)

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Research

18 pages, 7845 KiB  
Article
Effect of Xenon Ion Irradiation on the Properties of Austenitic Steel AISI 316
by Piotr Budzyński, Mariusz Kamiński, Zbigniew Surowiec and Marek Wiertel
Materials 2024, 17(20), 5094; https://doi.org/10.3390/ma17205094 - 18 Oct 2024
Viewed by 799
Abstract
This study investigated changes in the crystal lattice, tribological properties and friction mechanism of AISI 316 steel irradiated with swift 160 MeV xenon ions. The irradiation process caused the increased roughness of the steel surface and the swelling of the material. The thickness [...] Read more.
This study investigated changes in the crystal lattice, tribological properties and friction mechanism of AISI 316 steel irradiated with swift 160 MeV xenon ions. The irradiation process caused the increased roughness of the steel surface and the swelling of the material. The thickness of the irradiated layer increased by about 13 nm. Following irradiation with the fluences 2.5 × 1014 and 3.2 × 1014 (Xe24+/cm2), martensite formed in the surface layer. Fluctuating changes were also observed with respect to the coefficient of friction and the degree of wear of the AISI 316 steel samples. Irradiation also increased the microhardness of the steel. Full article
(This article belongs to the Special Issue Fatigue Performance and Modeling of Advanced Metal Materials)
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14 pages, 4132 KiB  
Article
Fatigue Life Prediction of a SAE Keyhole Specimen as a Subcase of Certification by Analysis
by Xijia Wu, Zhong Zhang and Dany Paraschivoiu
Materials 2024, 17(18), 4521; https://doi.org/10.3390/ma17184521 - 14 Sep 2024
Viewed by 802
Abstract
To advance the technology of Certification by Analysis (CbA), as called for by the aerospace industry, the fatigue problems of SAE keyhole specimens are analyzed to demonstrate a subcase of CbA. First, phenomena identification and ranking table (PIRT) analysis is performed. Second, modeling [...] Read more.
To advance the technology of Certification by Analysis (CbA), as called for by the aerospace industry, the fatigue problems of SAE keyhole specimens are analyzed to demonstrate a subcase of CbA. First, phenomena identification and ranking table (PIRT) analysis is performed. Second, modeling of the key phenomena is conducted, and finally, verification and validation with the experimental results are achieved. In particular, the elastic/elastoplastic stress distributions in the keyhole specimens are obtained using the finite element method (FEM). Plasticity correction for stress/strain at the notch root is made using the modified Neuber’s rule along with the Ramberg–Osgood equation. The low cycle fatigue (LCF) crack nucleation life is analytically predicted using the modified Tanaka–Mura model, a.k.a. the TMW model, given the material’s elastic modulus, Poisson’s ratio, Burgers vector, and surface energy, without the need for coupon fatigue data regression. The Tomkins equation is used to simulate plastic crack growth within the notch plastic zone. The above analytical life predictions are validated against the SAE keyhole specimen tests, becoming the first successful case of fatigue CbA at a sub-element level. Full article
(This article belongs to the Special Issue Fatigue Performance and Modeling of Advanced Metal Materials)
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17 pages, 3799 KiB  
Article
A Model to Account for the Effects of Load Ratio and Hydrogen Pressure on the Fatigue Crack Growth Behavior of Pressure Vessel Steels
by Ashok Saxena and Kip O. Findley
Materials 2024, 17(17), 4308; https://doi.org/10.3390/ma17174308 - 30 Aug 2024
Viewed by 972
Abstract
A phenomenological model for estimating the effects of load ratio R and hydrogen pressure PH2 on the hydrogen-assisted fatigue crack growth rate (HA–FCGR) behavior in the transient and steady-state regimes of pressure vessel steels is described. The “transient regime” is identified [...] Read more.
A phenomenological model for estimating the effects of load ratio R and hydrogen pressure PH2 on the hydrogen-assisted fatigue crack growth rate (HA–FCGR) behavior in the transient and steady-state regimes of pressure vessel steels is described. The “transient regime” is identified with crack growth within a severely embrittled zone of intense plasticity at the crack tip. The “steady-state” behavior is associated with the crack growing into a region of comparatively lower hydrogen concentration located further away from the crack tip. The model treats the effects of R and PH2 as being functionally separable. In the transient regime, the effects of the hydrogen pressure on the HA–FCGR behavior were negligible but were significant in the steady-state regime. The hydrogen concentration in the steady-state region is modeled as being dependent on the kinetics of lattice diffusion, which is sensitive to pressure. Experimental HA–FCGR data from the literature were used to validate the model. The new model was shown to be valid over a wide range of conditions that ranged between 1R0.8 and 0.02PH2103 MPa for pressure vessel steels. Full article
(This article belongs to the Special Issue Fatigue Performance and Modeling of Advanced Metal Materials)
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