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Applied Sciences
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Recent Advances in Fatigue and Fracture of Engineering Materials
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Recent Advances in Fatigue and Fracture of Engineering 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: 31 October 2024 | Viewed by 2803

Special Issue Editors

Dr. Tomasz Ślęzak

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, Military University of Technology, Ul. Gen. S. Kaliskiego 2, 00-908 Warsaw, Poland
Interests: mechanical engineering; mechanical properties; fracture mechanics; mechanical behavior of materials; microstructure; mechanical testing; failure analysis; construction; metals; fracture
Dr. Robert Kosturek

E-Mail Website
Guest Editor
Department of Fatigue and Machine Design, Faculty of Mechanical Engineering, Military University of Technology, 00-908 Warsaw, Poland
Interests: friction stir welding; aluminum alloys; mechanical behavior of materials; microstructure; fatigue
Special Issues, Collections and Topics in MDPI journals
Dr. Krzysztof Grzelak

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, Military University and Technology, 2 Kaliskiego Street, 00-908 Warsaw, Poland
Interests: laser beam welding; hybrid laser arc welding; additive manufacturing; mechanical behavior of materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fatigue properties are crucial in a wide range of structural materials utilized in civil engineering, automotive, energy industry, aeronautics and amon many others. Current trends and challenges in design require the development of new materials and wide knowledge about their properties. Metals, their alloys and more and more often composites are used due to their specific mechanical properties, useful especially in the conditions of fatigue loads. Fatigue and fracture of engineering materials have a complex nature and their course depend on various factors such as material state, loading conditions, environment and their combinations.

The aim of this Special Issue is to collect and share with a wide community of researchers the results of scientific research, addressing the recent advances in fatigue and fracture of materials. It will cover a wide range of topics including: the phenomena accompanying the process of crack initiation and propagation, the influence of different factors on fatigue life, development of approaches in fatigue life estimation, description of failure mechanisms, description and analysis of fracture surfaces, the influence of residual stresses on cracking, effect of microstructure, texture, and grain boundaries on fatigue life, and others.

Thus, we invite the researchers working in the described area to present their latest results in the form of original research and review articles. Papers that present experimental results are highly appreciated, as well as those that focus on numerical techniques for fatigue life assessment.

Dr. Tomasz Ślęzak
Dr. Robert Kosturek
Dr. Krzysztof Grzelak
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. 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
  • composite materials
  • mechanical properties
  • fatigue behaviour
  • failure mechanisms description
  • fatigue life prediction
  • residual stresses
  • fracture analysis

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Published Papers (4 papers)

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Research

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12 pages, 7389 KiB  
Article
Experimental and FE Investigation on the Influence of Impact Load on the Moment Transmission of Smooth Shaft–Hub Connections
by Markus Härtel, Loc Le Duc, Thomas Grund, Lukáš Suchý, Thomas Lampke and Alexander Hasse
Appl. Sci. 2024, 14(19), 8916; https://doi.org/10.3390/app14198916 - 3 Oct 2024
Viewed by 451
Abstract
A well-known phenomenon in machinery systems is the easing of a blocked connection of mechanical parts after an impact hit close to the connection. Such impact hits may also arise in shaft–hub connections such as gears, crankshafts, or other parts. The objective of [...] Read more.
A well-known phenomenon in machinery systems is the easing of a blocked connection of mechanical parts after an impact hit close to the connection. Such impact hits may also arise in shaft–hub connections such as gears, crankshafts, or other parts. The objective of this study is to investigate the influence of local impact loads on the transmittable torque of smooth shaft–hub connections. In a specially designed test rig, it was demonstrated that the transmittable torque of the shaft–hub connection is reduced as a consequence of the impact, resulting in a reduction in the frictional force and slippage of the hub. Increasing the impact load leads to an increase in the reduction in the frictional force as well as the slippage and reduces the transmittable torque. By carrying out a modal analysis of the relevant parts and FE simulations of the impact, two possible reasons have been identified: (i) the impact load excites a vibration mode in the connection which reduces the frictional force and the transmittable torque; and (ii) the impact causes local deformation of the shaft, which results in local slip. Full article
(This article belongs to the Special Issue Recent Advances in Fatigue and Fracture of Engineering Materials)
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15 pages, 3932 KiB  
Article
Influence of Process Liquids on the Formation of Strengthened Nanocrystalline Structures in Surface Layers of Steel Parts during Thermo-Deformation Treatment
by Ihor Hurey, Andy Augousti, Pavlo Maruschak, Alan Flowers, Volodymyr Gurey, Volodymyr Dzyura and Olegas Prentkovskis
Appl. Sci. 2024, 14(17), 8053; https://doi.org/10.3390/app14178053 - 9 Sep 2024
Viewed by 531
Abstract
The results of the influence of a range of process liquids on the formation of strengthened nanocrystalline structures in the surface layers of steel samples with different carbon content during thermo-deformation treatment are presented. The liquids were mineral oil; mineral oil with active [...] Read more.
The results of the influence of a range of process liquids on the formation of strengthened nanocrystalline structures in the surface layers of steel samples with different carbon content during thermo-deformation treatment are presented. The liquids were mineral oil; mineral oil with active additives containing polymers; water; and an aqueous solution of mineral salts based on magnesium and calcium chlorides. The thickness and hardness of the nanocrystalline layer increased with increasing steel carbon content. The thickness and microhardness of Steel C45 are 230–240 μm and 8.6 GPa, respectively, when using mineral oil with AAP, 110–120 μm and 7.2 GPa, respectively, when using mineral oil alone, and for steel CT80 when using mineral oil, they are 180–200 μm and 9.1 GPa, respectively (C45 and CT80 refers to engineering steels). The process liquid is decomposed into its component chemical elements by the high temperatures and pressures in the contact zone of the tool with the treated surface. It also gives off active hydrogen, which diffuses into the surface layer of the metal and significantly affects its formation. It was established that the greatest thickness and hardness of the layers were obtained after processing pre-hydrogenated samples. The choice of process fluid is critical during thermo-deformation treatment. Full article
(This article belongs to the Special Issue Recent Advances in Fatigue and Fracture of Engineering Materials)
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17 pages, 4746 KiB  
Article
Progressive Damage Simulation of Wood Veneer Laminates and Their Uncertainty Using Finite Element Analysis Informed by Genetic Algorithms
by Johannes Reiner, Yun-Fei Fu and Thomas Feser
Appl. Sci. 2024, 14(11), 4511; https://doi.org/10.3390/app14114511 - 24 May 2024
Viewed by 701
Abstract
Within the search for alternative sustainable materials for future transport applications, wood veneer laminates are promising, cost-effective candidates. Finite element simulations of progressive damage are needed to ensure the safe and reliable use of wood veneers while exploring their full potential. In this [...] Read more.
Within the search for alternative sustainable materials for future transport applications, wood veneer laminates are promising, cost-effective candidates. Finite element simulations of progressive damage are needed to ensure the safe and reliable use of wood veneers while exploring their full potential. In this study, highly efficient finite element models simulate the mechanical response of quasi-isotropic [90/45/0/−45]s beech veneer laminates subjected to compact tension and a range of open-hole tension tests. Genetic algorithms (GA) were coupled with these simulations to calibrate the optimal input parameters and to account for the inherent uncertainties in the mechanical properties of wooden materials. The results show that the continuum damage mechanistic simulations can efficiently estimate progressive damage both qualitatively and quantitatively with errors of less than 4%. Variability can be assessedthrough the relatively limited number of 400 finite element simulations as compared to more data-intensive algorithms utilised for uncertainty quantification. Full article
(This article belongs to the Special Issue Recent Advances in Fatigue and Fracture of Engineering Materials)
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Review

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20 pages, 352 KiB  
Review
Advances in Finite Element Modeling of Fatigue Crack Propagation
by Abdulnaser M. Alshoaibi and Yahya Ali Fageehi
Appl. Sci. 2024, 14(20), 9297; https://doi.org/10.3390/app14209297 - 12 Oct 2024
Viewed by 655
Abstract
Fatigue crack propagation is a critical phenomenon that affects the structural integrity and lifetime of various engineering components. Over the years, finite element modeling (FEM) has emerged as a powerful tool for studying fatigue crack propagation and predicting crack growth behavior. This study [...] Read more.
Fatigue crack propagation is a critical phenomenon that affects the structural integrity and lifetime of various engineering components. Over the years, finite element modeling (FEM) has emerged as a powerful tool for studying fatigue crack propagation and predicting crack growth behavior. This study offers a thorough overview of recent advancements in finite element modeling (FEM) of fatigue crack propagation. It highlights cutting-edge techniques, methodologies, and developments, focusing on their strengths and limitations. Key topics include crack initiation and propagation modeling, the fundamentals of finite element modeling, and advanced techniques specifically for fatigue crack propagation. This study discusses the latest developments in FEM, including the Extended Finite Element Method, Cohesive Zone Modeling, Virtual Crack Closure Technique, Adaptive Mesh Refinement, Dual Boundary Element Method, Phase Field Modeling, Multi-Scale Modeling, Probabilistic Approaches, and Moving Mesh Techniques. Challenges in FEM are also addressed, such as computational complexity, material characterization, meshing issues, and model validation. Additionally, the article underscores the successful application of FEM in various industries, including aerospace, automotive, civil engineering, and biomechanics. Full article
(This article belongs to the Special Issue Recent Advances in Fatigue and Fracture of Engineering Materials)
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