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Metals
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Recent Scientific Developments in Additively Manufactured Materials—Damage, Fracture, Fatigue, and...
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Recent Scientific Developments in Additively Manufactured Materials—Damage, Fracture, Fatigue, and Failure Assessments

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Additive Manufacturing".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 2603

Special Issue Editors

Prof. Dr. Aleksandar M. Grbovic

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, University of Belgrade, 11000 Belgrade, Serbia
Interests: fatigue of materials and structures; engineering fracture mechanics; numerical modelling
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Aleksandar S. Sedmak

E-Mail Website
Guest Editor
Innovation Centre, Faculty of Mechanical Engineering, University of Belgrade, 11000 Belgrade, Serbia
Interests: welded joints; structural integrity assessment; fracture mechanics; finite element analysis; engineering materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The expansion of additive manufacturing (AM) technologies started approximately three decades ago with the main application of AM in so-called rapid prototyping, the process used to reduce the development time of new parts. The progress in hardware and software extended the use of AM, and today, these technologies are widely used for the production of components delivered to end-users. Many metallic parts, made of aluminum, titanium, or nickel-based alloys by means of AM technologies, are used today in machines, cars, ships, even airplanes. However, experimental results reveal that mechanical properties of these parts are not always correlated to properties obtained with specimens; this is the main reason AM is not a widely adopted technology for the production of critical metallic components. Therefore, it is necessary to improve the damage tolerance design of AM metallic parts through a better understanding of fracture and fatigue behavior associated with AM. To make forecasts about the fatigue life of such components exposed to service loads, extensive research followed by characterization of used materials must be carried out. This Special Issue aims to present articles on recent research and developments in the field of damage and failure analysis of AM materials.

Prof. Dr. Aleksandar M. Grbovic
Prof. Dr. Aleksandar S. Sedmak
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

  • additively manufactured materials
  • damage tolerance design
  • fatigue and failure analysis
  • life assessment
  • numerical modelling
  • mechanical properties of AMM

Published Papers (1 paper)

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Research

11 pages, 2213 KiB  
Article
Experimental Evaluation of Hoop Stress–Strain State of 3D-Printed Pipe Ring Tensile Specimens
by Milan Travica, Nenad Mitrovic, Aleksandar Petrovic, Isaak Trajkovic, Milos Milosevic, Aleksandar Sedmak and Filippo Berto
Metals 2022, 12(10), 1560; https://doi.org/10.3390/met12101560 - 21 Sep 2022
Cited by 9 | Viewed by 2057
Abstract
Data on the strain and stress status of the pipe in the circumferential direction are required for various pipe manufacturing procedures (e.g., in the oil business, the process of manufacturing seamless pipes with a conical shaft). The aim of this study is to [...] Read more.
Data on the strain and stress status of the pipe in the circumferential direction are required for various pipe manufacturing procedures (e.g., in the oil business, the process of manufacturing seamless pipes with a conical shaft). The aim of this study is to develop a procedure to determine the strain and stress behavior of Pipe Ring Tensile Specimens (PRTSs) in the hoop direction, as there are a lack of official standardized methods for testing PRTS. This paper discusses the application of the Digital Image Correlation method for testing plastic PRTSs. PRTSs are tested using a specially designed steel tool with two D blocks. A 3D-printed PRTS is placed over two D-shaped mandrels, which are fixed on a tensile tool and tensile testing machine. The strain evolution in the gage length of the specimens is captured using the three-dimensional Digital Image Correlation (3D DIC) method. To check the geometry of the cross-section of the PRTS after fracture, all the specimens are 3D scanned. For the study, six groups of PRTS are analyzed, consisting of three filling percentages (60, 90, and 100%) and two geometry types (Single and Double PRTS). The results show that the type and percentage of filling, as well as the method of printing, affect the material behavior. However, the approach with the DIC system, 3D printer, and scanner shows that they are effective instruments for mapping complete strain fields in PRTS, and thus are effective in characterizing the mechanical properties of pipes. Full article
(This article belongs to the Special Issue Recent Scientific Developments in Additively Manufactured Materials—Damage, Fracture, Fatigue, and Failure Assessments)
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