Fatigue Failure Assessment of Metallic Materials

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

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 9503

Special Issue Editors


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Guest Editor
Department of Mechanics and Machine Design, Opole University of Technology, Opole, Poland
Interests: fatigue of materials; fracture of materials; metal composites; mechanical properties, multiaxial fatigue

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Guest Editor
Department of Mechanical Engineering, University of Coimbra, 3030-788 Coimbra, Portugal
Interests: structural integrity; fatigue; fracture mechanics; finite element method; fiber-reinforced composites; environmental effects; additive manufacturing
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Guest Editor
Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 11/12 Gabriela Narutowicza Street, 80-233 Gdańsk, Poland
Interests: mechanical/fatigue and surface properties; fracture surface investigation; 3D fractography
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We live in a world where new ideas arise very quickly, causing new challenges, which in turn force science and industry to take new steps. The results of these activities are new structures, new technologies, and new materials. These, in turn, require proper understanding, knowledge of their behavior, and determination of the scope of their applicability. Therefore, after checking the fundamental static properties, the behavior of materials and structures under fatigue and dynamic loads is checked. Methods and algorithms for estimating durability are sought out and then developed to give engineers the opportunity to design an optimal structure.

More and more advanced testing tools allow for the analysis of increasingly complex load cases and the identification of damage mechanisms. The extensive application of advanced experimental methods allows for various damage accumulation models, but also their observation in multiple scales, from the nano to the macro level.

Authors are invited to publish their research results on the subject of fatigue failure assessment of metallic materials. We trust that this Special Issue will demonstrate the recent advances in forecasting and fatigue life assessment.

Dr. Zbigniew Marciniak
Prof. Dr. Ricardo Branco
Dr. Wojciech Macek
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 and fracture of materials
  • 3D fractography
  • complex loading
  • fatigue life assessment
  • damage accumulation methods

Published Papers (3 papers)

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Research

21 pages, 7509 KiB  
Article
Correlation between Fractal Dimension and Areal Surface Parameters for Fracture Analysis after Bending-Torsion Fatigue
by Wojciech Macek
Metals 2021, 11(11), 1790; https://doi.org/10.3390/met11111790 - 07 Nov 2021
Cited by 24 | Viewed by 2468
Abstract
This paper investigates the fracture surface topography of two steel and aluminum alloys subject to bending-torsion fatigue loadings, as well as their susceptibility to fatigue performance and failure mechanisms. Using fracture surface topography data analysis, elements with different geometries were elaborated. A correlation [...] Read more.
This paper investigates the fracture surface topography of two steel and aluminum alloys subject to bending-torsion fatigue loadings, as well as their susceptibility to fatigue performance and failure mechanisms. Using fracture surface topography data analysis, elements with different geometries were elaborated. A correlation between the fractal dimension, other selected parameters of surface topography such as areal Sx, and fatigue loading conditions was found. Distinctions in particular regions of cracks were also recognized through proving the correctness and universality of the total fracture surface method. The influence of fatigue loading parameters on the surface topography of fatigue fractures was demonstrated. For the analyzed cases, results show that the fractal dimension and standard surface topography parameters represent a correlation between them and loading conditions. As a single parameter, the appropriate loading ratio cannot be outright calculated with fractal dimension, but can be estimated with some approximation, taking into account additional assumptions. Full article
(This article belongs to the Special Issue Fatigue Failure Assessment of Metallic Materials)
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22 pages, 19278 KiB  
Article
Fatigue Performance of Thin Laser Butt Welds in HSLA Steel
by Patricio G. Riofrío, Fernando Antunes, José Ferreira, António Castanhola Batista and Carlos Capela
Metals 2021, 11(10), 1499; https://doi.org/10.3390/met11101499 - 22 Sep 2021
Cited by 1 | Viewed by 2030
Abstract
This work is focused on understanding the significant factors affecting the fatigue strength of laser-welded butt joints in thin high-strength low-alloy (HSLA) steel. The effects of the weld profile, imperfections, hardness, and residual stresses were considered to explain the results found in the [...] Read more.
This work is focused on understanding the significant factors affecting the fatigue strength of laser-welded butt joints in thin high-strength low-alloy (HSLA) steel. The effects of the weld profile, imperfections, hardness, and residual stresses were considered to explain the results found in the S-N curves of four welded series. The results showed acceptable fatigue strength although the welded series presented multiple-imperfections. The analysis of fatigue behavior at low stress levels through the stress-concentrating effect explained the influence of each factor on the S-N curves of the welded series. The fatigue limits of the welded series predicted through the stress-concentrating effect and by the relationship proposed by Murakami showed good agreement with the experimental results. Full article
(This article belongs to the Special Issue Fatigue Failure Assessment of Metallic Materials)
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16 pages, 5228 KiB  
Article
Two-Stage Model for Fatigue Life Assessment of High Frequency Mechanical Impact (HFMI) Treated Welded Steel Details
by Boris Fuštar, Ivan Lukačević, Davor Skejić and Mladen Lukić
Metals 2021, 11(8), 1318; https://doi.org/10.3390/met11081318 - 20 Aug 2021
Cited by 3 | Viewed by 3112
Abstract
Welded steel details are critical components from the aspect of fatigue. Additional fatigue resistance can be achieved by the High-Frequency Mechanical Impact (HFMI) treatment. This treatment increases the crack initiation period by improving the weld geometry, introducing compressive residual stresses, and increasing the [...] Read more.
Welded steel details are critical components from the aspect of fatigue. Additional fatigue resistance can be achieved by the High-Frequency Mechanical Impact (HFMI) treatment. This treatment increases the crack initiation period by improving the weld geometry, introducing compressive residual stresses, and increasing the weld toe’s hardness. The study presented in this paper is based on the development and calibration of an Initiation–Propagation-based Two-Stage Model (TSM), which is, by the combination of different methods, suitable to separately consider crack initiation and crack propagation. It is shown that a TSM is able to predict the fatigue life of as-welded and HFMI-treated welded steel details, which is proven by comparing the calculated results with the results of tests on similar details given in the literature. A parametric study of the TSM is conducted for different steel grades in order to investigate the influence of steel strength and HFMI parameters on fatigue lives of a welded steel detail with longitudinal attachment. Full article
(This article belongs to the Special Issue Fatigue Failure Assessment of Metallic Materials)
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