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Study on Cyclic Mechanical Behaviors of Materials – 2nd Edition
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Study on Cyclic Mechanical Behaviors of Materials – 2nd Edition

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

Deadline for manuscript submissions: 10 October 2024 | Viewed by 6329

Special Issue Editors

Prof. Dr. Halina Egner

E-Mail Website
Guest Editor
Mechanical Department, Cracow University of Technology, Kraków, Poland
Interests: constitutive modeling; low-cycle fatigue; thermo-mechanical coupling; cyclic hardening/softening; damage; plasticity; phase transformations; composite materials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Stanisław Mroziński

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, UTP University of Science and Technology, Bydgoszcz, Poland
Interests: fatigue life; cumulative damage in low-cycle fatigue; cyclic hardening/softening; fatigue testing procedures; thermomechnical fatigue
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The increasing demand for high-performance construction materials evokes the development of adequate constitutive modelling, as well as the appropriate predictions of overall failure mechanisms under complex thermo-mechanical loads. Fatigue, resulting from cyclic loading, is one of the most common and important phenomenon encountered in mechanical structures for different industrial applications. A correct prediction of this phenomenon is usually closely related to safety in addition to economic aspects.

Resistance to cyclic loading and creep are features of paramount importance in the assessment of construction materials used in airplanes, gas turbines, fossil fuel power plants, nuclear reactors, etc. For this reason, the effects of variable loads applied to structural elements at a wide range of temperatures are currently being researched in many scientific centres all over the world. These works result in new engineering materials, such as nickel-based superalloys, heat-resistant austenitic steels, and martensitic and light alloys.

Cyclic loads apply to a majority of structural elements. At the same time, the analysis of fatigue problems is much more complicated than research related to monotonic loads. Difficulties arise from the large number of cycles, resulting in the accumulation of various effects and tedious numerical calculations.

This Special Issue aims to present the latest achievements in the field of fatigue. We invite researchers to submit original research papers and review articles on the cyclic behaviours of various materials, including metals and geomaterials. Both experimental and theoretical studies related to different aspects of fatigue are warmly welcome.

Prof. Dr. Halina Egner
Prof. Dr. Stanisław Mroziński
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. Materials 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 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

  • low-cycle/high-cycle/very high-cycle fatigue
  • thermomechanical fatigue
  • cumulative fatigue damage
  • cyclic hardening/softening
  • fatigue life
  • multiaxial fatigue
  • fatigue testing
  • creep and fatigue
  • stress concentration

Published Papers (6 papers)

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Research

15 pages, 13798 KiB  
Article
Studies on the Evolution of Fatigue Strength of Aluminium Wires for Overhead Line Conductors
by Bartosz Jurkiewicz and Beata Smyrak
Materials 2024, 17(11), 2537; https://doi.org/10.3390/ma17112537 - 24 May 2024
Viewed by 358
Abstract
Traditional ACSR overhead wires, which consist of a high-strength steel core and several layers of aluminium wires, are currently the most popular overhead line conductor (OHL) design globally. Operating conditions, particularly operating under varying stresses from Karman vortices, lead to the fatigue cracking [...] Read more.
Traditional ACSR overhead wires, which consist of a high-strength steel core and several layers of aluminium wires, are currently the most popular overhead line conductor (OHL) design globally. Operating conditions, particularly operating under varying stresses from Karman vortices, lead to the fatigue cracking of wires of the outer layer, followed by wires of the inner layers. Karman vortices are formed by the detachment of a laminar wind stream flowing around the conductor, which causes vibrations in the conductor called wind or aeolian oscillations. Aluminium wires are manufactured using standard batch material drawing technology. Although the fatigue strength of such wires is not standardised, there are various criteria for evaluating this characteristic, as well as established limits on the number of cycles needed to break the first wires of the outer layer. Fatigue strength also strongly depends on the geometric structure of the wire and its operating conditions. The article analyses the influence of the mechanical condition of aluminium wires used in ACSR cables on their fatigue strength. We then present results from aluminium wire fatigue tests conducted on a specially constructed test rig. In addition, fatigue cracks were interpreted using scanning microscopy. Full article
(This article belongs to the Special Issue Study on Cyclic Mechanical Behaviors of Materials – 2nd Edition)
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32 pages, 14336 KiB  
Article
Eigenvibrations of Kirchhoff Rectangular Random Plates on Time-Fractional Viscoelastic Supports via the Stochastic Finite Element Method
by Marcin Kamiński, Michał Guminiak, Agnieszka Lenartowicz, Magdalena Łasecka-Plura, Maciej Przychodzki and Wojciech Sumelka
Materials 2023, 16(24), 7527; https://doi.org/10.3390/ma16247527 - 6 Dec 2023
Cited by 1 | Viewed by 818
Abstract
The present work’s main objective is to investigate the natural vibrations of the thin (Kirchhoff–Love) plate resting on time-fractional viscoelastic supports in terms of the Stochastic Finite Element Method (SFEM). The behavior of the supports is described by the fractional order derivatives of [...] Read more.
The present work’s main objective is to investigate the natural vibrations of the thin (Kirchhoff–Love) plate resting on time-fractional viscoelastic supports in terms of the Stochastic Finite Element Method (SFEM). The behavior of the supports is described by the fractional order derivatives of the Riemann–Liouville type. The subspace iteration method, in conjunction with the continuation method, is used as a tool to solve the non-linear eigenproblem. A deterministic core for solving structural eigenvibrations is the Finite Element Method. The probabilistic analysis includes the Monte-Carlo simulation and the semi-analytical approach, as well as the iterative generalized stochastic perturbation method. Probabilistic structural response in the form of up to the second-order characteristics is investigated numerically in addition to the input uncertainty level. Finally, the probabilistic relative entropy and the safety measure are estimated. The presented investigations can be applied to the dynamics of foundation plates resting on viscoelastic soil. Full article
(This article belongs to the Special Issue Study on Cyclic Mechanical Behaviors of Materials – 2nd Edition)
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18 pages, 10628 KiB  
Article
Research of the Ball Burnishing Impact over Cold-Rolled Sheets of AISI 304 Steel Fatigue Life Considering Their Anisotropy
by Stoyan Slavov, Diyan Dimitrov, Mariya Konsulova-Bakalova and Lyubomir Si Bao Van
Materials 2023, 16(10), 3684; https://doi.org/10.3390/ma16103684 - 11 May 2023
Cited by 2 | Viewed by 1420
Abstract
The present work focusses on the research of the plastic deformation accumulated effect obtained after two different plastic deformation treatments, over the fatigue life of AISI 304 austenitic stainless steel. The research is focused on ball burnishing as a finishing process to form [...] Read more.
The present work focusses on the research of the plastic deformation accumulated effect obtained after two different plastic deformation treatments, over the fatigue life of AISI 304 austenitic stainless steel. The research is focused on ball burnishing as a finishing process to form specific, so-called “regular micro-reliefs” (RMRs) on a pre-rolled stainless-steel sheet. RMRs are formed using a CNC (Computerized Numerically Controlled) milling machine and toolpaths with the shortest unfolded length, generated by an improved algorithm, based on the Euclidean Distance calculation. The effect of the predominant tool trajectory direction during the ball burnishing process (which can be coinciding or transverse with the rolling direction), the magnitude of applied deforming force, and feed-rate is subjected to evaluation using Bayesian rule analyses of experimentally obtained results for the fatigue life of AISI 304 steel. The obtained results give us reason to conclude that the fatigue life of researched steel is increased when directions of pre-rolled plastic deformation and the tool movement during ball burnishing are coincident. It also been found that the magnitude of deforming force has a stronger impact over the fatigue life, than the feed-rate of the ball tool. Full article
(This article belongs to the Special Issue Study on Cyclic Mechanical Behaviors of Materials – 2nd Edition)
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10 pages, 8475 KiB  
Article
Strength and Cyclic Properties of Additive vs. Conventionally Produced Material AlSi10Mg
by Vladimír Chmelko, Miroslav Šulko, Jaroslava Škriniarová, Matúš Margetin, Marek Gašparík, Tomáš Koščo and Marián Semeš
Materials 2023, 16(7), 2598; https://doi.org/10.3390/ma16072598 - 24 Mar 2023
Cited by 1 | Viewed by 1113
Abstract
Additive metals are practically identical in strength to the properties of conventionally produced materials. This article experimentally analyses strength properties and fatigue properties in the tensile–pressure mode for two different directions of 3D printing of AlSi10Mg material. The resulting fatigue parameters [...] Read more.
Additive metals are practically identical in strength to the properties of conventionally produced materials. This article experimentally analyses strength properties and fatigue properties in the tensile–pressure mode for two different directions of 3D printing of AlSi10Mg material. The resulting fatigue parameters of the Basquin curve are confronted with a conventionally produced alloy of the same composition. The microstructure analysis explains the different fatigue properties obtained by these two material production technologies. Phenomena such as strength enhancement in additive manufacturing material, anisotropy of cyclic properties, and cyclic hardening are discussed. The limits of current additive manufacturing are clarified, and the future direction of research in this field is outlined. Full article
(This article belongs to the Special Issue Study on Cyclic Mechanical Behaviors of Materials – 2nd Edition)
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15 pages, 8524 KiB  
Article
Influence of Pre-Strain on Static and Fatigue Properties of S420M Steel
by Stanisław Mroziński, Adam Lipski, Michał Piotrowski and Halina Egner
Materials 2023, 16(2), 590; https://doi.org/10.3390/ma16020590 - 7 Jan 2023
Cited by 1 | Viewed by 1085
Abstract
This paper reports the results of static tensile and low-cycle fatigue tests on S420M steel specimens. As-received (unstrained) and pre-strained specimens were used during the tests. Based on the static tensile tests carried out, no effect of pre-strain on the basic strength parameters [...] Read more.
This paper reports the results of static tensile and low-cycle fatigue tests on S420M steel specimens. As-received (unstrained) and pre-strained specimens were used during the tests. Based on the static tensile tests carried out, no effect of pre-strain on the basic strength parameters of the S420M steel was found. Low-cycle fatigue tests showed that the pre-strain of the specimens causes a change in the cyclic properties of the steel and a slight increase in fatigue life compared to that of the as-received specimens. The greatest increase in durability was observed at the lowest strain levels. Full article
(This article belongs to the Special Issue Study on Cyclic Mechanical Behaviors of Materials – 2nd Edition)
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14 pages, 2196 KiB  
Article
Using the Fourier Methods for Cycle Counting of Bimodal Stress Histories with Variable in Time Amplitudes of Components
by Marek S. Kozień
Materials 2023, 16(1), 254; https://doi.org/10.3390/ma16010254 - 27 Dec 2022
Viewed by 980
Abstract
The application of the Fourier methods to perform cycle identification and description for different cases of bimodal stress histories are presented and discussed in the paper. The direct spectral method and the modified direct spectral method, previously co-proposed by the author, together with [...] Read more.
The application of the Fourier methods to perform cycle identification and description for different cases of bimodal stress histories are presented and discussed in the paper. The direct spectral method and the modified direct spectral method, previously co-proposed by the author, together with the aspects of the use of Fourier methods discussed in this article, offer a unique alternative to the methods known in the literature for identifying and counting various types of bimodal stress variations in time (with constant or variable amplitudes; completely reversed, reversal, or pulsed type). The application of the Fast Fourier Transform (FFT) and the Short-Time Fourier Transform (STFT) is discussed. The method is useful, especially in cases when it is known that due to the form of work of the mechanical system the two existing components of vibrations with various frequencies can be identified, of which the one with higher frequency has a vibration amplitude lower than a component with a lower frequency and, above all, a variable in time. Full article
(This article belongs to the Special Issue Study on Cyclic Mechanical Behaviors of Materials – 2nd Edition)
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