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Polymer Materials in Additive Manufacturing: Modelling and Simulation Volume II

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Processing and Engineering".

Deadline for manuscript submissions: closed (20 April 2023) | Viewed by 6059

Special Issue Editors


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Guest Editor
Arts et Metiers Institute of Technology, CNAM, PIMM, HESAM University, F-75013 Paris, France
Interests: polymers and composites; polymer processing; mechanical properties; solid mechanics; fracture mechanics; material characterization; additive manufacturing
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Arts et Metiers Institute of Technology, CNAM, PIMM, HESAM University, F-75013 Paris, France
Interests: polymers and composites; polymer processing; mechanical properties; solid mechanics; fracture mechanics; material characterization; additive manufacturing
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Arts et Métiers Institute of Technology (AMIT), 75013 Paris, France
Interests: industry 4.0; industrial design; modelling of complex production systems; digital manufacturing and design of cyber-physical systems (CPS); algorithms and computational tools for enhanced manufacturing; machine learning algorithms for controlling of operations; digital twins
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Additive manufacturing (AM) has been at the center of attention of studies and industry. The AM process involves gradual build-up in layers, and capability in the fabrication of complex shapes with low cost. Advances in the processing of polymers and polymer composites with this method are in the domain of this journal, which can provide a vital resource for anyone involved in additive manufacturing. This Special Issue will cover but is not limited to original reviews and research articles dedicated to:

  • AM processes of manufacturing and materials;
  • Process–microstructure/morphology–properties relationships;
  • Optimization of process parameters;
  • Mechanical properties of fabricated parts;
  • Modeling and simulation.

Dr. Mohammadali Shirinbayan
Dr. Joseph Fitoussi
Dr. Khaled Benfriha
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. Polymers 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 2700 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
  • polymers
  • polymer composites

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Published Papers (3 papers)

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Research

21 pages, 7546 KiB  
Article
Three-Dimensional Stress Fields in Thick Orthotropic Plates with Sharply Curved Notches under In-Plane and Out-of-Plane Shear
by Alessandro Pontefisso, Matteo Pastrello and Michele Zappalorto
Polymers 2023, 15(9), 2013; https://doi.org/10.3390/polym15092013 - 24 Apr 2023
Viewed by 1663
Abstract
In this paper, an analytical solution for the stress fields in the close neighbourhoods of radiused notches in thick orthotropic plates under shear loading and twisting is provided. In the first step, the equations of the three-dimensional theory of elasticity are successfully reduced [...] Read more.
In this paper, an analytical solution for the stress fields in the close neighbourhoods of radiused notches in thick orthotropic plates under shear loading and twisting is provided. In the first step, the equations of the three-dimensional theory of elasticity are successfully reduced to two uncoupled equations in two-dimensional space. Later, the 3D stress field solution for orthotropic plates with radiused notches is presented and its degree of accuracy is discussed by comparing theoretical results and numerical data from 3D FE analyses. The solution proposed can be satisfactorily used to characterise the stress field in plates made with polymeric composite materials, such as fibre-reinforced polymers and natural composites. Full article
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13 pages, 4929 KiB  
Article
The Structural Evolution of β-to-α Phase Transition in the Annealing Process of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)
by Jian Yang, Xianggui Liu, Jinxing Zhao, Xuelian Pu, Zetong Shen, Weiyi Xu and Yuejun Liu
Polymers 2023, 15(8), 1921; https://doi.org/10.3390/polym15081921 - 18 Apr 2023
Cited by 3 | Viewed by 2002
Abstract
In this study, the structural and property changes induced in the highly ordered structure of preoriented poly(3-hydroxybutyrate-co-3-hydroxyvalerate) PHBV films containing the β-form during annealing were investigated. The transformation of the β-form was investigated by means of in situ wide-angle X-ray diffraction [...] Read more.
In this study, the structural and property changes induced in the highly ordered structure of preoriented poly(3-hydroxybutyrate-co-3-hydroxyvalerate) PHBV films containing the β-form during annealing were investigated. The transformation of the β-form was investigated by means of in situ wide-angle X-ray diffraction (WAXD) using synchrotron X-rays. The comparison of PHBV films with the β-form before and after annealing was performed using small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The evolution mechanism of β-crystal transformation was elucidated. It was revealed that most of the highly oriented β-form directly transforms into the highly oriented α-form, and there might be two kinds of transformations: (1) The β-crystalline bundles may be transformed one by one rather than one part by one part during annealing before a certain annealing time. (2) The β-crystalline bundles crack or the molecular chains of the β-form are separated from the lateral side after annealing after a certain annealing time. A model to describe the microstructural evolution of the ordered structure during annealing was established based on the results obtained. Full article
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12 pages, 3650 KiB  
Article
Modelling Influence on Bending Behaviour Simulation of the Poly(Lactic Acid) Structures, 3D Printed
by Dorin-Ioan Catana, Denisa-Iulia Brus and Mihai-Alin Pop
Polymers 2023, 15(4), 960; https://doi.org/10.3390/polym15040960 - 15 Feb 2023
Viewed by 1816
Abstract
The paper presents the influence of the loading modelling on the simulation process results of the bending behaviour for 3D printed structures. The study is done on structures having different geometries of the cross section, and the type of structure is bar or [...] Read more.
The paper presents the influence of the loading modelling on the simulation process results of the bending behaviour for 3D printed structures. The study is done on structures having different geometries of the cross section, and the type of structure is bar or tube. The materials used for 3D printing are poly(lactic) acid and poly(lactic acid) mixed with glass fibres. The simulation was carried out both based on a simple modelling (schematization) of the bending loading and a complex one. The complex modelling reproduces the bending of 3D printed structures more accurately but is also more time-consuming for the computer-aided design stage. Analysis of the study results shows that in terms of the Von Mises stresses determined by simulation, they are in line with those of the tests but with a slight advantage for the complex modelling compared to the simple one. In terms of deformations, the simulation introduces errors compared to the test results, but the source of the errors is the high elasticity of some 3D printed structures. The study also shows that the high elasticity is due to both the shape of the structure cross section and its arrangement during the bending test. Full article
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