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Man-Made Polymers and Their Characterization, Modeling, Simulation in Engineering

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

Deadline for manuscript submissions: closed (10 March 2022) | Viewed by 7530

Special Issue Editors


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Guest Editor
Magnel Laboratory for Concrete Research, Ghent University, 60, B-9052 Gent, Belgium
Interests: concrete; cohesive fracture; creep; shrinkage; hydration; cross-linking; multi-phase modeling; discrete element modeling
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Guest Editor
Department of Mechanics, Faculty of Civil Engineering, Czech Technical University in Prague, Prague, Czech Republic
Interests: computational mechanics; multiscale analysis of heterogeneous materials and composites

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Guest Editor
Associate Professor, Department of Materials Science and Engineering, Division of Applied Mechanics, Uppsala University, Box 534, 751 21 Uppsala, Sweden
Interests: material equations; inverse analysis; continuum mechanics; thermodynamics; electromagnetism; finite element method

Special Issue Information

Dear Colleagues,

Synthetic polymers, often called plastics, find frequent application in many engineering fields. Thermosets, thermoplastics, elastomers, with or without fiber or particle reinforcement, are applied in a multitude of different composite elements. In 3-D printer thermoplastics are used extensively for prototyping. Fiber reinforces epoxy composites are used nearly everywhere, from race cars to laptops. Adhesive glues are commonly used in structural engineering applications during the construction of new structures, but also structural repair and strengthening like surface-mounted laminates and post-installed anchors.

Countless applications exploit these man-made polymers. Their investigation needs joint forces of material scientists, chemists, physicists and engineers. Characterization of them depends on the level of complexity. We concentrate on continuum mechanics, discrete element analysis, and plastics' experimental investigations, combining the material and structural scales in this special issue. Research topics of relevance should focus on

  • Experimental work on the thermo-mechano-chemical response
  • Determining material parameters via inverse analysis
  • Computational modeling of polymers
  • Modeling response of composite structural elements
  • Validation of computational results by experiments

The special issue “Man-made polymers and their characterization, modeling, simulation in engineering” addresses recent developments concerning the characterization and modeling of synthetic polymers in typical engineering applications. The topics of interest span the fields of classical material sciences but also applications to structural components and include, but are not limited to, Material characterization, Material modeling, Inverse analysis, Monitoring and Updating, Rheology, Damage mechanics, Hardening, Creep, Fatigue, Thermo-mechanics, Migration, Degradation, Computation, Numerical methods, Process simulation, Hybrid systems, Smart materials and 3-D printing.

Prof. Dr. Roman Wan-Wendner
Prof. Dr. Jan Vorel
Prof. Dr. Bilen Emek Abali
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

Thermoset; Thermoplasts; Elastomer; Curing; Aging; Creep; Shrinkage; Fatigue; Material modeling; Rheology; Experiments; Computation

Published Papers (2 papers)

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Research

14 pages, 578 KiB  
Article
Cure Kinetics and Inverse Analysis of Epoxy-Amine Based Adhesive Used for Fastening Systems
by Bilen Emek Abali, Michele Zecchini, Gilda Daissè, Ivana Czabany, Wolfgang Gindl-Altmutter and Roman Wan-Wendner
Materials 2021, 14(14), 3853; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14143853 - 09 Jul 2021
Cited by 9 | Viewed by 1632
Abstract
Thermosetting polymers are used in building materials, for example adhesives in fastening systems. They harden in environmental conditions with a daily temperature depending on the season and location. This curing process takes hours or even days effected by the relatively low ambient temperature [...] Read more.
Thermosetting polymers are used in building materials, for example adhesives in fastening systems. They harden in environmental conditions with a daily temperature depending on the season and location. This curing process takes hours or even days effected by the relatively low ambient temperature necessary for a fast and complete curing. As material properties depend on the degree of cure, its accurate estimation is of paramount interest and the main objective in this work. Thus, we develop an approach for modeling the curing process for epoxy based thermosetting polymers. Specifically, we perform experiments and demonstrate an inverse analysis for determining parameters in the curing model. By using calorimetry measurements and implementing an inverse analysis algorithm by using open-source packages, we obtain 10 material parameters describing the curing process. We present the methodology for two commercial, epoxy based products, where a statistical analysis provides independence of material parameters leading to the conclusion that the material equation is adequately describing the material response. Full article
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19 pages, 5010 KiB  
Article
Optimization of Manufacturing Parameters and Tensile Specimen Geometry for Fused Deposition Modeling (FDM) 3D-Printed PETG
by Arda Özen, Dietmar Auhl, Christina Völlmecke, Josef Kiendl and Bilen Emek Abali
Materials 2021, 14(10), 2556; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14102556 - 14 May 2021
Cited by 39 | Viewed by 5054
Abstract
Additive manufacturing provides high design flexibility, but its use is restricted by limited mechanical properties compared to conventional production methods. As technology is still emerging, several approaches exist in the literature for quantifying and improving mechanical properties. In this study, we investigate characterizing [...] Read more.
Additive manufacturing provides high design flexibility, but its use is restricted by limited mechanical properties compared to conventional production methods. As technology is still emerging, several approaches exist in the literature for quantifying and improving mechanical properties. In this study, we investigate characterizing materials’ response of additive manufactured structures, specifically by fused deposition modeling (FDM). A comparative analysis is achieved for four different tensile test specimens for polymers based on ASTM D3039 and ISO 527-2 standards. Comparison of specimen geometries is studied with the aid of computations based on the Finite Element Method (FEM). Uniaxial tensile tests are carried out, after a careful examination of different slicing approaches for 3D printing. We emphasize the effects of the chosen slicer parameters on the position of failures in the specimens and propose a simple formalism for measuring effective mechanical properties of 3D-printed structures. Full article
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