Fatigue-Challenge of Structural Integrity

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: closed (30 July 2023) | Viewed by 3151

Special Issue Editors


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Guest Editor
School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
Interests: high-temperature fatigue

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Guest Editor
School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou, China
Interests: fatigue damage and fracture

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Guest Editor
Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
Interests: design and evaluation of advanced metallic materials with improved fatigue properties

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Guest Editor
School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, China
Interests: fatigue damage

Special Issue Information

Dear Colleagues,

Fatigue is one of the most common failure modes of engineering materials and structures. Relevant research has been conducted for more than 160 years since the concept of “fatigue” was first put forward in 1854. The strength theory of mechanical structure based on fatigue research has been gradually developed, promoting the design of engineering structures from empirical to safety methods. With the increasingly stringent service conditions, such as high temperature, high pressure and corrosion in the field of aerospace, electric power, petrochemicals, etc. the structural integrity of advanced structures and components faces more severe challenges.

Fatigue research is generally divided into low-cycle fatigue, high-cycle fatigue, very high-cycle fatigue, multiaxial fatigue, creep-fatigue, thermo-mechanical fatigue, corrosion-fatigue, etc. The research contents generally include advanced testing and characterization methods, manufacturing and processing routes, complex loading effects, fatigue crack initiation and early propagation, life prediction models, constitutive models, etc. Therefore, fatigue research is of great importance to ensure the long-life and safe service of engineering structures.

This Special Issue aims to present the latest research progress in the fatigue of engineering structures and materials. Original research, review articles, and short communications related to the above-mentioned topics are encouraged.

Dr. Bingbing Li
Dr. Xiaofeng Guo
Dr. Bo Xiao
Dr. Wei Zhang
Guest Editors

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Keywords

  • fatigue
  • microstructure characterization
  • damage mechanism
  • crack growth
  • life prediction
  • constitutive model

Published Papers (2 papers)

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Research

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20 pages, 8878 KiB  
Article
Investigation of Fatigue Crack Growth in TA2 Cruciform Specimen with an Inclined Crack, Considering Stress Ratio and Biaxial Load Ratio
by Wen-Jie Bao, Jia-Yu Liu, Zhi-Lin Tao, Guang-Zhou Zhao and Chang-Yu Zhou
Crystals 2022, 12(11), 1530; https://doi.org/10.3390/cryst12111530 - 27 Oct 2022
Cited by 2 | Viewed by 1110
Abstract
The biaxial fatigue crack growth behavior of commercial pure titanium TA2 of cruciform specimens with different crack inclination angles (β = 90°, 60°, 45°) under various biaxial load ratios (λ = 0, 0.5, 1) and different stress ratios (R = [...] Read more.
The biaxial fatigue crack growth behavior of commercial pure titanium TA2 of cruciform specimens with different crack inclination angles (β = 90°, 60°, 45°) under various biaxial load ratios (λ = 0, 0.5, 1) and different stress ratios (R = 0, 0.1, 0.3) is studied by an IPBF-5000 biaxial testing machine. The test results prove that the maximum tangential stress criterion is suitable for predicting the initiation angle of uniaxial and biaxial mixed-mode I–II fatigue cracks. The fatigue crack growth rate of a cruciform specimen with mode I and mixed-mode I–II cracks decreases with the increase of biaxial load ratio and increases with the stress ratio. The Walker model and Kujawski model have better compression effects on fatigue crack growth data than the Paris model. Full article
(This article belongs to the Special Issue Fatigue-Challenge of Structural Integrity)
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Review

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15 pages, 1751 KiB  
Review
Review of Creep-Thermomechanical Fatigue Behavior of Austenitic Stainless Steel
by Jingwei Zhao, Feng Qiu and Chuangang Xu
Crystals 2023, 13(1), 70; https://doi.org/10.3390/cryst13010070 - 01 Jan 2023
Cited by 3 | Viewed by 1494
Abstract
Research on the creep-thermomechanical fatigue (CTMF) behaviors of austenitic stainless steel for nuclear power plant pipelines is reviewed in the present paper. The stress response behavior, the main damage mechanisms, including thermomechanical fatigue, creep, oxidation, and dynamic strain aging (DSA), as well as [...] Read more.
Research on the creep-thermomechanical fatigue (CTMF) behaviors of austenitic stainless steel for nuclear power plant pipelines is reviewed in the present paper. The stress response behavior, the main damage mechanisms, including thermomechanical fatigue, creep, oxidation, and dynamic strain aging (DSA), as well as the effects of strain dwell type, dwell time, and temperature-strain phase angle on fatigue life behavior of austenitic stainless steel under CTMF loading conditions are systematically discussed, and the coupled effects of various damage mechanisms are revealed. It is emphasized that CTMF is closer to the actual service condition of nuclear power plant pipes. It is pointed out that the traditional method of life design based on the isothermal fatigue test data is not conservative. Finally, the research on CTMF behaviors of austenitic stainless steel for nuclear power plant is summarized and prospected. Full article
(This article belongs to the Special Issue Fatigue-Challenge of Structural Integrity)
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