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Applied Sciences
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Mechanical Behavior of Polymer Composite Materials
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Mechanical Behavior of Polymer Composite 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: closed (10 February 2024) | Viewed by 2541

Special Issue Editors

Dr. Zhongsen Zhang

E-Mail Website
Guest Editor
School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 201804, China
Interests: interfacial bonding; mechanical behavior; manufacturing; nanocomposites; interlaminar toughening; failure analysis; 3D printing
Special Issues, Collections and Topics in MDPI journals
Dr. Ning Liu

E-Mail Website
Guest Editor
School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 201804, China
Interests: nano-composite materials; micro-nano mechanics; nanoparticles; research on mechanical problems; multiscale numerical simulation
Prof. Dr. Bin Yang

E-Mail Website
Guest Editor
School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
Interests: composite materials; mechanical behavior of materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymer composite materials have gained significant attention in various fields, including automotive, aerospace, biomedical, sports, and civil engineering. This Special Issue aims to gather original cutting-edge research and review papers that focus on the latest advancements in polymer composites, including (but not limited to) mathematical/physical modelling, computer simulation and experimentation, design and analysis of composite structures, novel experimental and manufacturing methods, and new applications of composites in advanced industries. The realm of polymer composites currently spans a wide array of synthetic and natural polymers serving as matrix materials, along with diverse organic and inorganic filler materials such as fibers and micro-/nano-particles. Mechanical analysis and failure assessment of composite structures rely on the understanding of the mechanical behavior of composite materials in terms of elastic–plastic response, damage mechanisms, and failure phenomena. The development of the material models of composites normally faces many challenges that require contributions in mechanical characterization, mathematical modelling, physical-based modelling and simulation, or novel experimentation. Moreover, this Special Issue also focuses on the development of novel manufacturing techniques, as well as exploring new applications of composites in advanced industries.

Dr. Zhongsen Zhang
Dr. Ning Liu
Prof. Dr. Bin Yang
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

  • polymer composites
  • mechanical behavior
  • modeling and simulation
  • failure mode
  • manufacturing
  • durability

Published Papers (2 papers)

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Research

19 pages, 4137 KiB  
Article
PLA-Sago Starch Implants: The Optimization of Injection Molding Parameter and Plasticizer Material Compositions
by Yudan Whulanza, Mohamad Taufiqurrakhman, Sugeng Supriadi, Mochamad Chalid, Prasetyanugraheni Kreshanti and Athoillah Azadi
Appl. Sci. 2024, 14(5), 1683; https://doi.org/10.3390/app14051683 - 20 Feb 2024
Viewed by 1112
Abstract
Previous research extensively characterized PLA blends for various biomedical applications, especially in polymer-based biodegradable implant fixations, offering advantages over metallic counterparts. Nevertheless, achieving an optimal PLA mixture with both mechanical resistance and fast biodegradability remains a challenge. Currently, literature still lacks insights into [...] Read more.
Previous research extensively characterized PLA blends for various biomedical applications, especially in polymer-based biodegradable implant fixations, offering advantages over metallic counterparts. Nevertheless, achieving an optimal PLA mixture with both mechanical resistance and fast biodegradability remains a challenge. Currently, literature still lacks insights into the manufacturing parameter impact on sago starch/PLA in combination with PEG plasticizer. The objective of this study is to assess variations in injection molding temperatures and sago/PLA/PEG weight compositions to identify the optimal combination enhancing miniplate mechanical properties and biodegradation behavior. Mechanical tests reveal that incorporating PEG into pure PLA yields high mechanical performance, correlating linearly with increasing injection temperature. However, the interaction once the three materials are mixed decreases mechanical performance across tested temperatures. Higher biodegradation rates are observed with a larger weight composition of the hydrophilic behavior attributed to sago starch presence. The observed novelty in PLA mixed with 20% sago starch and 10% PEG at 170 °C indicates a better performance in elastic modulus and elongation at break also the degradation rate, emphasizing the role of injection temperature in molding miniplate implants. In conclusion, the interplay of injection molding parameters and material compositions is crucial for optimizing PLA-based miniplate implants, with potential contributions to tissue implants rather than bone implants due to their mechanical limitation. Full article
(This article belongs to the Special Issue Mechanical Behavior of Polymer Composite Materials)
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14 pages, 6683 KiB  
Article
Experimental Study of the Influence of Stitched Nylon Threads in Glass-Fiber-Reinforced Polymer Two-Dimensional Multilayer Composite on Tensile Strength
by Manuel Alejandro Lira-Martinez, Citlalli Gaona-Tiburcio, Facundo Almeraya-Calderon, Jesus Manuel Jaquez-Muñoz and Manuela Alejandra Zalapa-Garibay
Appl. Sci. 2023, 13(21), 11679; https://doi.org/10.3390/app132111679 - 25 Oct 2023
Cited by 1 | Viewed by 1103
Abstract
Stitched filaments are known to modify the mechanical properties of glass-fiber-reinforced polymers 2D (GFRPs 2D), so studying the effect on mechanical properties is underway to determine the critical variables involved. This research focuses on the study of the tensile strength effect of stitched [...] Read more.
Stitched filaments are known to modify the mechanical properties of glass-fiber-reinforced polymers 2D (GFRPs 2D), so studying the effect on mechanical properties is underway to determine the critical variables involved. This research focuses on the study of the tensile strength effect of stitched low-density Barkley FBA BGQS15-15 nylon monofilament on biaxial E-Glass Saertex 830 g/m2 (+/−45°) cured with Polyester Sypol Resin 8086 CCP using a vacuum infusion process. Four specimens were made with longitudinal distances between the stitched reinforcements of 0.5, 1.0, 1.5, and 2.0 cm, respectively. Tensile strength tests based on standard ASTM D3039 were performed to study how stitching can affect toughness, Young’s modulus, deformation, ultimate strength, and yield strength. The results indicated that the stitching increases Young’s modulus up to 99.2%, UTS is increased by up to +3.14%, deformation decreases by up to −41.66%, and toughness decreases by up to −36.89%. Although the stitching’s main function is to increase interlaminar resistance, it also induces the formation of stress concentrations by the new threads, and premature failure in the matrix was shown. Full article
(This article belongs to the Special Issue Mechanical Behavior of Polymer Composite Materials)
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