Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.4
2.9
Journals
Metals
Special Issues
Metal Fatigue Failure: Mechanism, Theories and Design
share announcement

Metal Fatigue Failure: Mechanism, Theories and Design

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Failure Analysis".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 5553

Special Issue Editors

Prof. Dr. Jose Guilherme Santos Da Silva

E-Mail Website
Guest Editor
Structural Engineering Department (ESTR), Faculty of Engineering (FEN), State University of Rio de Janeiro (UERJ), São Francisco Xavier St., 524, Maracanã, Rio de Janeiro 20550-900, Brazil
Interests: dynamic structural analysis; dynamic experimental monitoring; fatigue assessment; steel and steel-concrete composite structures; structural design; structural analysis; structural behaviour; finite element modelling
Dr. Guilherme Santana Alencar

E-Mail Website
Guest Editor
Civil and Environmental Engineering Department, University of Brasilia (UnB), Brasília 70910-900, Brazil
Interests: fatigue assessment; dynamic analysis; fracture mechanics; steel and steel-concrete composite structures; structural design; structural analysis; structural behaviour; finite element modelling

Special Issue Information

Dear Colleagues,

Fatigue failure analysis is essential for designing welded components when subjected to cyclic loadings. Real-world engineering structures normally involve welded components, which require special consideration in the fatigue analysis process. Therefore, this Special Issue aims to exhibit scientific progress and the most innovative approaches in design methodologies and theoretical aspects related to fatigue assessment, and their most recent evolutions, with the scope of presenting state-of-the-art structural solutions relevant to the design of railway and highway bridges, marine structures, and automotive, piping and pressure vessels industries. This Special Issue is also focused on outlining the fundamental development trends in fatigue analysis, together with the most recent advances in experimental characterization, numerical modelling, validation methods and engineering applications, and all these topics will be addressed by the contributions collected. Scientific contributions will be considered noteworthy if they represent a real element of novelty in fatigue design, as well as in advanced analysis methodologies for effective design solutions.

Prof. Dr. Jose Guilherme Santos Da Silva
Dr. Guilherme Santana Alencar
Guest Editors

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. Metals is an international peer-reviewed open access monthly 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 2600 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

  • fatigue failure
  • fatigue analysis
  • fatigue design
  • fatigue strength
  • fatigue fracture
  • multiaxial fatigue
  • structural stresses
  • Finite Element Method (FEM)
  • fracture mechanics
  • welded joints

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

23 pages, 6984 KiB  
Article
Monotonic and Fatigue Behaviour of the 51CrV4 Steel with Application in Leaf Springs of Railway Rolling Stock
by Vítor M. G. Gomes, Carlos D. S. Souto, José A. F. O. Correia and Abílio M. P. de Jesus
Metals 2024, 14(3), 266; https://doi.org/10.3390/met14030266 - 23 Feb 2024
Cited by 1 | Viewed by 867
Abstract
Leaf springs are components of railway rolling stock made of high-strength alloyed steel to resist loading and environmental conditions. Combining the geometric notches with the high surface roughness of its leaves, fatigue models based on local approaches might be more accurate than global [...] Read more.
Leaf springs are components of railway rolling stock made of high-strength alloyed steel to resist loading and environmental conditions. Combining the geometric notches with the high surface roughness of its leaves, fatigue models based on local approaches might be more accurate than global ones. In this investigation, the monotonic and fatigue behaviour of 51CrV4 steel for application in leaf springs of railway rolling stock is analysed. Fatigue models based on strain-life and energy-life approaches are considered. Additionally, the transient and stabilised behaviours are analysed to evaluate the cyclic behaviour. Both cyclic elastoplastic and cyclic master curves are considered. Lastly, different fatigue fracture surfaces are analysed using SEM. As a result, the material properties and fatigue models can be applied further in either the design of leaf springs or in the mechanical designs of other components made of 51CrV4 steel. Full article
(This article belongs to the Special Issue Metal Fatigue Failure: Mechanism, Theories and Design)
►▼ Show Figures

Figure 1

18 pages, 5093 KiB  
Article
Local Ratcheting at the Notch Region of Non-Press-Fitted and Press-Fitted Al 7075-T6 Samples Undergoing Asymmetric Stress Cycles
by F. Hatami and A. Varvani-Farahani
Metals 2023, 13(9), 1549; https://doi.org/10.3390/met13091549 - 2 Sep 2023
Viewed by 732
Abstract
The present study evaluated the ratcheting response of notched and press-fitted Al 7075-T6 specimens under stress-controlled asymmetric cycles. The degree of the interference fit (DIF) directly influenced the magnitude and the rate of progressive plastic strain at the notch edge region. Local ratcheting [...] Read more.
The present study evaluated the ratcheting response of notched and press-fitted Al 7075-T6 specimens under stress-controlled asymmetric cycles. The degree of the interference fit (DIF) directly influenced the magnitude and the rate of progressive plastic strain at the notch edge region. Local ratcheting at the hole–pin interference region was analyzed by means of two kinematic-hardening rules—the Ahmadzadeh–Varvani (A–V) rule and the Chaboche rule—coupled with the Neuber rule. Ratcheting strains at the notch root of aluminum samples with DIF = 0 (non-press-fitting samples) were measured and found to be the highest in magnitude. For the press-fitted samples, however, ratcheting strains dropped noticeably as the DIF increased from 1% to 2%. The press-fitting process plastically deformed the perimeter edges of the notches and improved the materials strength locally at the notch edges, resulting in better resistance against ratcheting progress. Local ratcheting strains at distances of 0.5, 1.3, and 3.0 mm from the notch roots were predicted for both pinned and unpinned samples via the hardening rules and were compared with those of measured ratcheting values. The ratcheting curves predicted by means of the A-V and Chaboche hardening rules closely agreed with the experimental data. The predicted ratcheting curves were positioned, respectively, above and below the measured ratcheting data. Full article
(This article belongs to the Special Issue Metal Fatigue Failure: Mechanism, Theories and Design)
►▼ Show Figures

Figure 1

17 pages, 2278 KiB  
Article
Statistically Modeling the Fatigue Life of Copper and Aluminum Wires Using Archival Data
by D. Gary Harlow
Metals 2023, 13(8), 1419; https://doi.org/10.3390/met13081419 - 8 Aug 2023
Cited by 2 | Viewed by 1076
Abstract
It has been known for at least 150 years that fatigue life data exhibits a considerable amount of variability. Furthermore, statistically modeling fatigue life adequately is challenging. Different empirical approaches have been used, each of which has merit; however, none is appropriate universally. [...] Read more.
It has been known for at least 150 years that fatigue life data exhibits a considerable amount of variability. Furthermore, statistically modeling fatigue life adequately is challenging. Different empirical approaches have been used, each of which has merit; however, none is appropriate universally. Even when a sufficiently robust database exists, the scatter in the fatigue lives may be extremely large and difficult to characterize. The purpose of this work is to review traditional and more modern empirically based methodologies for estimating the statistical behavior of fatigue data. The analyses are performed on two historic sets of data for annealed aluminum wire and annealed electrolytic copper wire tested in reverse torsion fatigue. These data are readily available In publications. Specifically, the review considers a traditional method for stress-cycle (S-N) analysis which includes linear regression through load dependent medians and mean square error (MSE) confidence bounds. Another approach that is used is Weibull distribution estimation for each loading condition, from which estimations for the median behavior and confidence bounds are determined. The preferred technique is the development of a cumulative distribution functions for fatigue life, which contains aspects of traditional reliability, classical S-N, and applied loading modeling. Again, confidence bounds are estimated for this technique. Even though it is an empirical technique, there are mechanistic aspects that underlie the empiricism. This approach is suggested because the method is very robust, and the estimation is more accurate than the other methods. Full article
(This article belongs to the Special Issue Metal Fatigue Failure: Mechanism, Theories and Design)
►▼ Show Figures

Figure 1

24 pages, 13766 KiB  
Article
Advances in Methodology for Fatigue Assessment of Composite Steel–Concrete Highway Bridges Based on the Vehicle–Bridge Dynamic Interaction and Pavement Deterioration Model
by Ana Célia Soares da Silva, Guilherme Santana Alencar and José Guilherme Santos da Silva
Metals 2023, 13(8), 1343; https://doi.org/10.3390/met13081343 - 27 Jul 2023
Cited by 1 | Viewed by 1033
Abstract
Fatigue cracking is one of the most prominent causes of mechanical failure limiting the service life of existing steel and composite steel–concrete bridges and is among the central concerns of structural and bridge engineers. In this context, the current work presents some recent [...] Read more.
Fatigue cracking is one of the most prominent causes of mechanical failure limiting the service life of existing steel and composite steel–concrete bridges and is among the central concerns of structural and bridge engineers. In this context, the current work presents some recent advancements in an existing methodology for fatigue analysis developed by the authors throughout the years. The methodology is specifically devoted to the fatigue assessment of composite steel–concrete bridges employing the local hot-spot S-N approach and a coupled vehicle–pavement–bridge system considering progressive pavement deterioration with stochastically generated roughness profiles. Two different methodologies were used to solve the dynamic equilibrium equations: the modal superposition method to solve the bridge dynamic equations and a direct integration method to solve the vehicle dynamic equations. From a computational point of view, the present approach is more efficient and detailed than previous versions, as it allows a significant reduction in the analysis time and the use of complex bridge and vehicle finite element models. In this regard, a case study of a highway composite steel–concrete bridge spanning 40 m was selected in order to demonstrate the usefulness of the presented improved methodology by carrying out a fatigue analysis. The results of this investigation (displacements and stresses) are presented, aiming to verify the factors that directly influence the structural response and, consequently, the service life of steel–concrete composite highway bridges. Full article
(This article belongs to the Special Issue Metal Fatigue Failure: Mechanism, Theories and Design)
►▼ Show Figures

Figure 1

17 pages, 7818 KiB  
Article
Experimental Observation and Simulation on Crack Growth Behavior of An Equivalent Welding Joint for A Deep-Sea Spherical Hull
by Fang Wang, Huageng Zhong, Lu Yang, Yongmei Wang, Fengluo Chen, Yu Wu, Jinfei Zhang and Ruilong Luo
Metals 2022, 12(10), 1592; https://doi.org/10.3390/met12101592 - 24 Sep 2022
Viewed by 1355
Abstract
The spherical pressure hull used in the manned cabin of deep-sea submersibles endures low-cycle fatigue problems during the process of cyclic submergence and recovery, but fatigue testing on its full-scale model is difficult to conduct. To approximate the problem, the paper proposed the [...] Read more.
The spherical pressure hull used in the manned cabin of deep-sea submersibles endures low-cycle fatigue problems during the process of cyclic submergence and recovery, but fatigue testing on its full-scale model is difficult to conduct. To approximate the problem, the paper proposed the design of an L-type equivalent welding joint to simulate the status of the strengthened part of the spherical pressure hull under a certain cyclic axial pressure history. The design principle of the equivalent welding joint is to ensure that the stress ratio between inner and outer surface and the distribution of the simulated test piece should be similar to or smaller than the actual stress distribution characteristics in the critical zone of the spherical hull for conservative consideration. The angle of the L-type joint is 175° in the present study, at which the stress on the outside is at the turning point from compressive stress to tensile stress. The fatigue experiment of the equivalent welding joint is conducted with measurements of crack growth and residual stresses. Multiple cracks are observed in the vicinity of the weld, which grows showing a typical low-cycle fracture morphology. The three-dimensional finite element modelling for the equivalent welding joint with prefabricated notch and the same weld zone shape with its tested piece is carried out. An improved crack growth model proposed by the author’s group, considering multiple factors, is adopted for crack growth calculation and compared with experimental results, which shows satisfactory agreement. The finite element modelling based on the pre-designed L-type joint combined with the improved crack growth rate model can be applied as a simplified method to simulate the fatigue life of the spherical pressure hull. Full article
(This article belongs to the Special Issue Metal Fatigue Failure: Mechanism, Theories and Design)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop