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Applied Sciences
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Recent Advances in Additive Manufacturing: From Building Processes to Materials...
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Recent Advances in Additive Manufacturing: From Building Processes to Materials Properties

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (20 November 2021) | Viewed by 5032

Special Issue Editors

Prof. Dr. Paolo Fino

E-Mail Website
Guest Editor
DISAT - Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy
Interests: research and development of new alloys for additive manufacturing processes
Special Issues, Collections and Topics in MDPI journals
Dr. Alberta Aversa

E-Mail Website
Guest Editor
Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
Interests: metallic materials; additive manufacturing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

At present, additive manufacturing (AM) processing technologies are continuously gaining interest in many industrial fields. The main advantages of these processes are undoubtedly related to the possibility of producing complex components and customized parts without the need of dedicated tools.

The rapid advancements of building processes have to be supported by an understanding of the AM materials’ properties and of their correlations with the building conditions. The unique AM building processes can on the one hand cause different material properties and, on the other hand, open new possibilities for the development of materials characterized by interesting properties and specific functionalities.

This Special Issue will address the recent advancements in the characterization of AM materials.

Potential topics may include:

  • New methodology for materials additive manufacturing development;
  • New materials for additive manufacturing;
  • Advanced characterizations of AM materials;
  • Properties of AM materials;
  • Materials modeling for AM development.

Prof. Paolo Fino
Dr. Alberta Aversa
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

  • Additive manufacturing
  • Mechanical properties
  • Building conditions
  • Materials development
  • Feedstock production
  • Microstructure
  • Metals
  • Polymers
  • Ceramics

Published Papers (2 papers)

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Research

9 pages, 2810 KiB  
Article
PoreAnalyzer—An Open-Source Framework for the Analysis and Classification of Defects in Additive Manufacturing
by Nils Ellendt, Fabian Fabricius and Anastasiya Toenjes
Appl. Sci. 2021, 11(13), 6086; https://0-doi-org.brum.beds.ac.uk/10.3390/app11136086 - 30 Jun 2021
Cited by 5 | Viewed by 1953
Abstract
Additive manufacturing processes offer high geometric flexibility and allow the use of new alloy concepts due to high cooling rates. For each new material, parameter studies have to be performed to find process parameters that minimize microstructural defects such as pores or cracks. [...] Read more.
Additive manufacturing processes offer high geometric flexibility and allow the use of new alloy concepts due to high cooling rates. For each new material, parameter studies have to be performed to find process parameters that minimize microstructural defects such as pores or cracks. In this paper, we present a system developed in Python for accelerated image analysis of optical microscopy images. Batch processing can be used to quickly analyze large image sets with respect to pore size distribution, defect type, contribution of defect type to total porosity, and shape accuracy of printed samples. The open-source software is independent of the microscope used and is freely available for use. This framework allows us to perform such an analysis on a circular area with a diameter of 5 mm within 10 s, allowing detailed process maps to be obtained for new materials within minutes after preparation. Full article
(This article belongs to the Special Issue Recent Advances in Additive Manufacturing: From Building Processes to Materials Properties)
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14 pages, 10162 KiB  
Article
Experimental Study on Improving the Mechanical Properties of Material Extrusion Rapid Prototyping Polylactic Acid Parts by Applied Vibration
by Shijie Jiang, Tiankuo Dong, Yang Zhan, Weibing Dai and Ming Zhan
Appl. Sci. 2021, 11(4), 1820; https://0-doi-org.brum.beds.ac.uk/10.3390/app11041820 - 18 Feb 2021
Cited by 2 | Viewed by 2452
Abstract
Due to the stratified nature of the manufacturing process, material extrusion (ME) parts have lower mechanical properties than those fabricated by traditional technology. This is one of the most significant defects hindering the development and application of this rapid prototyping technique. In this [...] Read more.
Due to the stratified nature of the manufacturing process, material extrusion (ME) parts have lower mechanical properties than those fabricated by traditional technology. This is one of the most significant defects hindering the development and application of this rapid prototyping technique. In this paper, vibration was applied to the ME process by using piezoelectric ceramics for the first time to improve the mechanical properties of the built parts. The vibrating ME equipment was established, and the specimens processed in different build directions were individually fabricated without applied vibration and with different applied vibrations. To quantify the effect of applied vibration on their mechanical properties and to summarize the influencing rule, a series of experimental tests were then performed on these specimens. A comparison between the testing results shows that the tensile strength and plasticity of the specimens, especially those processed in the Z direction, can be obviously improved by applied vibration. The orthogonal anisotropy is decreased obviously. The improvement becomes greater with increasing vibration frequency or amplitude. From the microscopic point of view, it can be seen that applied vibration can reduce the part’s defects of porosity and inclusion as well as separation between layers and, thereby, improve the bonding strength. Full article
(This article belongs to the Special Issue Recent Advances in Additive Manufacturing: From Building Processes to Materials Properties)
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