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Fracture and Fatigue Analysis of Metallic Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: 20 February 2026 | Viewed by 374

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
Interests: fatigue; fracture; structural integrity; experimental validation; numerical simulation; railway; reliability analysis; welded joints; bolted joints

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Guest Editor
Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze, 181/A, 43124 Parma, Italy
Interests: fatigue life assessment; fracture mechanics; fatigue strength; cracking

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Guest Editor
Department of Mechanical Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
Interests: fatigue; fracture; steels; connections

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Guest Editor Assistant
Department of Civil Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
Interests: structural integrity; offshore structures; high-strength steels; welded joints; damage mechanics; probabilistic modeling; reliability analysis

Special Issue Information

Dear Colleagues,

Metallic materials play a pivotal role in a wide range of engineering structures and components across various sectors, including the aerospace, automotive, and energy industries. However, fatigue and fracture failures remain a significant threat to the safety and reliability of these structures. To address these challenges effectively, a deep understanding of the underlying fatigue failure and fracture mechanisms is required.

This Special Issue aims to bring together the latest scientific and technological advancements to tackle the complex challenges of fatigue and fracture in metallic materials. The scope of this Special Issue encompasses a broad range of topics, including fatigue behavior, fracture mechanisms, life prediction techniques, and advanced analysis methods. We encourage submissions that address both experimental and numerical investigations across a wide range of areas, from material to structure. By fostering a multidisciplinary approach, combining insights from metallurgy, mechanics, and materials science with recent trends in new manufacturing processes, we aim to shed light on the complexities of fatigue and fracture in metallic materials.

It is recommended that the articles submitted are in accordance with the scope of this Special Issue (check the keywords); however, if the authors understand that their work fits into this Special Issue and brings new and more efficient approaches, please feel free to contact us.

Dr. Vítor Gomes
Prof. Dr. Andrea Carpinteri
Dr. Bruno Pedrosa
Guest Editors

Dr. Paulo Mendes
Guest Editor Assistant

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • metals
  • fracture failure mechanisms
  • fatigue life prediction
  • fracture analysis
  • fatigue crack growth
  • fracture mechanics
  • numerical fatigue analysis
  • computational fracture mechanics
  • manufacturing processes

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Published Papers (1 paper)

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Research

41 pages, 17064 KB  
Article
Fatigue Probabilistic Approach of Notch Sensitivity of 51CrV4 Leaf Spring Steel Based on the Theory of Critical Distances
by Vítor M. G. Gomes, Miguel A. V. de Figueiredo, José A. F. O. Correia and Abílio M. P. de Jesus
Appl. Sci. 2025, 15(17), 9739; https://doi.org/10.3390/app15179739 - 4 Sep 2025
Abstract
The mechanical and structural design of railway vehicles is heavily influenced by their lifetime. Because fatigue is a significant factor that impacts the longevity of railway components, it is imperative that the fatigue resistance properties of crucial components, like leaf springs, be thoroughly [...] Read more.
The mechanical and structural design of railway vehicles is heavily influenced by their lifetime. Because fatigue is a significant factor that impacts the longevity of railway components, it is imperative that the fatigue resistance properties of crucial components, like leaf springs, be thoroughly investigated. This research investigates the fatigue resistance of 51CrV4 steel under bending and axial tension, considering different stress ratios across low-cycle fatigue (LCF), high-cycle fatigue (HCF), and very-high-cycle fatigue (VHCF) regimes, using experimental data collected from this work and prior research. Data included fractographic analyses aiming to help in understanding some of failures for different loads. The presence of geometric discontinuities, such as notches, amplifies stress concentrations, requiring a probabilistic approach to fatigue assessment. To address notch effects, the theory of critical distances (TCD) was employed to evaluate fatigue strength. TCD model was integrated in fatigue statistical models, such as the Walker model (WSN) and the Castillo–Fernández-Cantelli model adapted for mean stress effects (ACFC). Extending the application of the TCD theory, this research provides an improved probabilistic fatigue model that integrates notch sensitivity, mean stress effects, and fatigue regimes, contributing to more reliable design approaches of railway leaf springs or other components produced in 51CrV4 steel. Full article
(This article belongs to the Special Issue Fracture and Fatigue Analysis of Metallic Materials)
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