COMPOSITES THEORY AND PRACTICE

Research Journal of The Polish Society of Composite Materials

Editorial Board

Editor-in-Chief

Katarzyna N. Braszczyńska-Malik (Poland): Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Institute of Materials Engineering, Poland
Metal matrix composites, light metal alloys, fabrication processes, microstructure and properties

Associate Editors



Jan Dusza (Slovakia): Institute of Materials Research, Slovak Academy of Sciences, Slovak Republic
Microstructure and mechanical properties of ceramic matrix composites, nano-composites, fractographic failure analysis of brittle materials, nano-mechanical testing of advanced ceramic and ceramic based composites
Jerzy Sobczak (Poland): Foundry Research Institute, Poland
Metal matrix composites, lightweight metals and alloys, functionally graded structures, high porosity media, special foundry techniques
Abdullach Tugrul Seyhan (Turkey): Eskisehir Technical University (ETU), Faculty of Engineering, Department of Materials Science and Engineering, Turkey
Nanocomposites, processing of fibre reinforced polymer composite materials, mechanical, thermal, physical and microstructural characterization of composite materials
Mateusz Kozioł (Poland): Silesian University of Technology
Polymer matrix composites (PMCs), functional nanocomposites, recycling of PMCs

Editorial Board







Victor Birman (USA)
Stanisław Błażewicz (Poland)
Aldo R. Boccaccini (United Kingdom)
T.W. Clyne (United Kingdom)
Philippe Colomban (France)
Ignazio Crivelli-Visconti (Italy)
Lech Czarnecki (Poland)
Jan Dutkiewicz (Poland)
Luciano Feo (Italy)
Ludo Froyen (Belgium)
Werner Hufenbach (Germany)
David Hui (USA)
Karl U. Kainer (Germany)
Jang-Kyo Kim (Hong Kong, China)
Marian Klasztorny (Poland)
Józef Koszkul (Poland)
Lothar Kroll (Germany)
Satish Kumar (USA)
Krzysztof J. Kurzydłowski (Poland)
Marcin Leonowicz (Poland)
Pavel Lukac (Czech Republic)
Gad Marom (Israel)
Stanisław Mazurkiewicz (Poland)
Roger Naslain (France)
Seeram Ramakrishna (Singapore)
Michał Szweycer (Poland)
Akira Todoroki (Japan)
Danuta Żuchowska (Poland)

Reviewer Board

Performed reviews in 2022:

Aamir Dean (Leibniz Universität Hannover, Germany)
Abílio P. Silva (Universidade da Beira Interior, Portugal)
Addisu Negash Ali (National Taiwan University of Science and Technology, Taiwan)
Agne Kairyte (Vilnius Gediminas Technical University, Lithuania)
Ali Riza Motorcu (Canakkale Onsekiz Mart University, Turkey)
Alicja Piasecka-Belkhayat (Silesian University of Technology, Poland)
Andrzej Kiczko (Military University of Technology, Poland)
Andrzej Posmyk (Silesian University of Technology, Poland)
Anna Boczkowska (Warsaw University of Technology, Poland)
Anna Dolata (Silesian University of Technology, Poland)
Anton Mostovoy (Yuri Gagarin State Technical University of Saratov, Russia)
B. Ratna Sunil (Bapatla Engineering College, India)
B. Surekha (KIIT University, India)
Bartosz Hekner (New Era Materials, Poland)
Błażej Chmielnicki (Łukasiewicz Research Network - Institute of Engineering of Polymer Materials and Dyes, Poland)
Danuta Matykiewicz (Poznań University of Technology, Poland)
Dariusz Garbiec (Łukasiewicz Research Network - Metal Forming Institute, Poland)
Dariusz Oleszak (Warsaw University of Technology, Poland)
Dinesh Kumar (NIT Kurukshetra, India)
Diptikanta Das (KIIT Deemed to be University, India)
Gulsah Akincioglu (Duzce University, Turkey)
Hadidane Hocine (University of Annaba, Algeria)
Iwona Bednarczyk (Silesian University of Technology, Poland)
Jarnail Singh (K.R. Mangalam University, India)
Jarnail Singh (NIT hamirpur, India)
Jarosław Bieniaś (Lublin University of Technology, Poland)
Jerzy Korol (Central Mining Institute, Poland)
Jerzy Morgiel (Institute of Metallurgy and Materials Science of Polish Academy of Sciences, Poland)
Jerzy Myalski (Silesian University of Technology, Poland)
Joanna Borowiecka-Jamrozek (Kielce University of Technology, Poland)
Jonty Mago (Indian Institute of Technology in Delhi, India)
K. Adashra Kumar (Gandhi Institute of Technology And Management, India)
K. Alagarraja (Anna University, India)
Kalimuthu Ramanathan (Alagappa Chettiar Government College of Engineering and Technology, India)
Karol Bula (Poznań University of Technology, Poland)
Kaushal Kumar (K.R. Mangalam University, India)
Krzysztof Naplocha (Wrocław University of Technology, Poland)
L. Syam Sundar (Prince Mohammad Bin Fahd University, Saudi Arabia)
Luca Sorrentino (University of Cassino and Southern Lazio, Italy)
M.R. Sanjay (Ramaiah Institute of Technology, India)
Mabao Liu (Xi'an Jiaotong University, China)
Magdalena Dobiszewska (Bydgoszcz University of Technology, Poland)
Magdalena Ziąbka (AGH University of Science and Technology, Poland)
Malakpuram Ramakrishna (VFSTR, India)
Manish Dixit (BN College of Engineering and Technology – Lucknow, India)
Marcin Stawarz (Silesian University of Technology, Poland)
Marek Konieczny (Kielce University of Technology, Poland)
Marian Klasztorny (Jan Grodek State University in Sanok, Poland)
Massoud Sedghi (Nazarbayev University, Kazakhstan)
Maulik Panchal (Institute for Plasma Research, India)
Mayank Pandey (Kritu Jyoti College, India)
Mehmet Avcar (Süleyman Demirel University, Turkey)
Michał Sałaciński (Air Force Institute of Technology, Poland)
Mohamed-Ouejdi Belarbi (Université de Biskra, Algeria)
Mohammad Junaid Khan (Mewat Engineering College Nuh, India)
Mrinalini D. Deshpande (Science College Nasik, India)
Natraj Yedla (National Institute of Technology Rourkela, India)
Nilamber Kumar Singh (National Institute of Technology in Patna, India)
Paweł Szymański (Poznań University of Technology, Poland)
Piotr Marek (Warsaw University of Technology, Poland)
Prasanta Sahoo (Jadavpur University, India)
Radha Raman Mishra (Birla Institute of Technology and Science – Pilani, India)
Rafał Chatys (Kielce University of Technology, Poland)
Rahmat Satoto (Indonesian Institute of Sciences, Indonesia)
Rajnikant Makwana (Maharaja Sayajirao University of Baroda, India)
S. Kamaluddin (Chirala Engineering College, India)
Saroj Kumar Sarangi (National Institute of Technology, Patna, India)
Shunhua Chen (University of Tokyo, Japan)
Slimane Merdaci (University of Sidi Bel Abbès, Algeria)
Stalin Balasubramaniam (Anna University, India)
Stanisław Kuciel (Kraków University of Technology, Poland)
Subbaian Jayabal (Government college of Engineering Thanjavur, India)
Suneev Anil Bansal (Maharaja Agrasen University, India)
Timon Rabczuk (Bauhaus-University Weimar, Germany)
Tohid Dastan (Isfahan University of Technology, Iran)
Tomasz Figlus (Silesian University of Technology, Poland)
Toshio Haga (Osaka Institute of Technology, Japan)
Vasanth Kumar H. S. (Government Engineering College, India)
Vijay Hiwarkar (Defence Institute of Advanced Technology, India)
Vladimir Shestakov (Riga Technical University, Latvia)
Waldemar Kaszuwara (Warsaw University of Technology, Poland)
Waldemar Pichór (AGH University of Science and Technology, Poland)
Władysław Skoneczny (University of Silesia, Poland)

Aims and Scope:

The Composites Theory and Practice Journal constitutes a medium for the publication of theoretical and experimental studies and reviews on fabrication techniques, structure, properties, behaviour and engineering applications of a wide range of composite materials. The Journal publishes original (research and technological) manuscripts and, occasionally, reviews on all aspects of composite materials science and technology.

The main topics covered by the journal are:

Composite materials

Polymer matrix composites (PMCs)
Ceramic matrix composites (CMCs)
Metal matrix composites (MMCs)
Bio-composites
Nano-composites
Smart composites

Production technologies of composites and their processing
Materials science and engineering of composite materials
1. Macro- and microstructure
2. Reaction and interfaces between components
3. Correlation between structure and properties
4. Mechanical, thermal, electrical, magnetic, optical, acoustic, other physical and chemical properties, corrosion and tribology
5. Biocompatibility
Mechanics of composite materials from nano to macro scales
1. Identification of mechanical (static and dynamic) and physical properties
2. Constitutive models
3. Strain rate and temperature sensitive mechanical properties
4. Rheology of composite materials
5. Degradation, damage, fracture, failure
6. Random properties, durability and reliability of composite materials and structures
Numerical modelling, simulation, validation and verification of composite materials and structures (statics, stability, dynamics, rheology)
1. Application of FE codes to modelling and simulation
2. Experimental validation and verification of numerical modelling and simulation
3. Modelling, simulation, validation and verification of degradation and failure of composite materials and structures and composite joints
4. Optimization of composite materials and structures
Engineering applications of composite materials in civil, mechanical and aerospace engineering, medicine, chemical engineering, marine, automotive and in rail-vehicle engineering
Recycling of composite materials and structures
Health monitoring, degradation, utilization of composite materials and structures
Frontier research and development of composite materials and structures

Other

COMPOSITES THEORY AND PRACTICE Journal Procedures

The Editors accept papers throughout the calendar year. All papers submitted to the Journal are subjected to a thorough peer reviewing process. The prerequisites for accepting articles for publication is to prepare the work in accordance with the requirements of the Journal and to obtain positive reviews.

Before submitting a paper, an Author must prepare it according to the Guidelines for Authors.
After logging into the system, an Author must attach:

his / her details (name and surname, affiliation and current e-mail address)
paper title
paper in Word format
paper in PDF format
become familiar with the provisions regarding ethics in publishing. By submitting an article to the journal, Authors automatically declare that the work is consistent with the principles against ghostwriting, guest authorship and plagiarism.

Each paper submitted to the Journal is subject to preliminary verification by the Editors for compliance with the Journal requirements (the topic and correct preparation of the paper according to the Guidelines for Authors). If the paper does not satisfy the basic requirements, the Author will be requested to revise the paper and resubmit it.

Having met the preliminary conditions, each manuscript is subject to identical procedures:

I. REVIEW PROCEDURE

* All the papers (in PDF format) are sent to Reviewers. The Journal Reviewers are specialists in composite materials, materials engineering and related sciences (Reviewers are always selected from other institutions than the Authors of the paper).The decision to appoint a reviewer belongs only to the Editor.

The reviewers for particular papers are appointed by the Editor-in-Chief (himself or having sought the opinion of the Section Editors) depending on the detailed topic of the submitted paper. Each Reviewer is asked to prepare an opinion on the paper on the standard Review form (available for Reviewers online in electronic format).

Reviewer before commencing work should become familiar with and act in accordance with the principles of ethics for the Journal. The Reviewer must guarantee:

an objective opinion
no conflict of interests (no personal or professional relationships with the paper Authors)
confidentiality.

* The Reviewer can present his / her comments in a descriptive form and classifies the paper as: accepted in the present form, in need of minor revision, in need of major revision or rejected. The Reviewer also has the right to request the paper to be submitted to him / her again after revisions for repeated review and acceptance.

* The Author (or Co-author – named as the contact person to receive correspondence) receives reviews (without the Reviewers’ names) in PDF format.

Where a revision is required, the authors are required to respond in detail to the Editor's, Editorial Office's and Reviewer's comments (by sending to the Editor) and to make corrections to the manuscript. In cases of dispute (including possible rejection of the manuscript) or at the author's request, the decision is taken by the Editors (with the final decision belonging to the Editor-in-Chief), who can appoint further reviewers if necessary.

* If the review is positive or the paper is submitted after corrections according to the Reviewers’ and Editor's remarks, the paper is referred to a further editorial procedure.

II. EDITORIAL PROCEDURE

* Each paper is proofread by a specialist native speaker of English. After proofreading the Author receives the corrected paper for acceptance of the corrections, remarks and suggestions of the proofreader.

* After the language proofreading and acceptance thereof by the Author, technical proofreading is done by the technical proofreader, then the text is typeset and formatted and all the papers submitted to the particular issue are subject to final technical proofreading.

(In case of any doubt arising during technical proofreading or typesetting and formatting of a particular paper, the Coordinating Editor contacts the Author again).

* Finally the whole issue goes to press and after its publication the particular papers are made available online (in PDF format) on the Journal website.

The order in which the papers are printed in the particular issue / publishing year depends both on the date of submission to the Editors and on how fast the paper undergoes the whole procedure as described above.

Submitting an article to the Journal is tantamount to expressing consent to publication in both paper and electronic form. The corresponding Author of the article receives (free of charge) the printed version of the Journal Issue, in which the article appeared. The electronic version is available without restrictions (free of charge to all readers).

By submitting the manuscript, the Authors automatically agree to the processing of the personal data provided by the Editors and Publishing House.

No honorarium will be paid. The journal does not have article submission charges.

The ethics rules

The ethics rules for the Composites Theory and Practice journal are based on the Best Practice Guidelines for Journal Editors issued by the Committee for Publishing Ethics (COPE).

Editors

An editor of a reviewed journal is responsible for making decisions which articles should be published, and in addition be responsible for all publications in the journal. By making these decisions, an editor may be guided by the editorial policy of the journal, as well as the legal requirements for libel, copyright infringement and plagiarism. An editor may communicate with other editors or reviewers when making a decision about publication.
An editor should evaluate manuscripts for intellectual content and follow the COPE guidelines for withdrawing articles. The editor shall not disclose any information about the manuscript he considers to anyone except the authors, reviewers and potential reviewers, and in some cases - members of the editorial board, as deemed appropriate.
Unpublished materials contained in the submitted manuscript cannot be used in the editor's own research. Valuable information or ideas obtained as a result of evaluation of the work must be confidential and cannot be used for personal gain.
The editor undertakes to ensure that advertising, reprinting or other commercial revenues do not affect editorial decisions. The editor should strive to ensure a fair and proper review process. The editor should require all colleagues to disclose relevant conflicting interests.

Reviewers

Reviewing helps the editor in making editorial decisions, and through editorial communication with the author, can also help the author improve the manuscript.
Any invited reviewer who does not feel competent to review the research reported in the article or knows that its timely execution will be impossible, should immediately notify the editor so that alternative reviewers can be contacted.
All manuscripts received for review must be treated as confidential documents. They must not be shown or discussed with other people unless permitted by the editor.
Reviews should be processed objectively. Personal criticism of the author is unacceptable. Reviewers should clearly express their views using appropriate supporting arguments.
The reviewer should also draw the Editor's attention to any significant similarities or overlaps between the manuscripts under consideration and any other published data about which he has personal knowledge.
Privileged information or ideas obtained as a result of the assessment must be confidential and cannot be used for personal gain. Reviewers should not judge manuscripts in the event of a conflict of interest, including those resulting from competitive cooperation or other relationships or connections with any of the authors, a company or institution related to the manuscript.

Authors

Authors reporting the results of original research should provide a detailed description of the performed work and an objective discussion about its significance. Fraudulent or knowingly inaccurate statements constitute unethical behavior and are unacceptable.
Authors should ensure that they have written entirely original works and if they have used the work and/or words of other people, that they have been quoted appropriately.
The author should not publish manuscripts describing basically the same research in more than one journal or original publication. Parallel submission of the same manuscript to more than one journal is considered as unethical publication behavior and is unacceptable.
Proper recognition of the work of others must always be granted. The authors should also cite publications that influenced the inspiration and determined the nature of the submitted work.
Authorship should be limited to persons who have made a significant contribution to the concept, design, performance or interpretation of the results of the submitted manuscript. All those who have made a significant contribution should be listed as co-authors. If there are other people who have participated in certain aspects of the research project, they should be listed in the Acknowledgments section.
The author for correspondence should ensure that all the relevant co-authors (as defined above) are listed and no inappropriate co-authors are included in the list of authors of the manuscript. He/she must also ensure that all the co-authors approved the final version of the article and agreed to submit it for publication.
All authors should disclose in their manuscripts all financial or other conflicts of interest that can be interpreted as affecting the results or their interpretation in the manuscript. All sources of financial support for work should be indicated.
When the author discovers a significant error or inaccuracy in his own published work, it is the responsibility of the author to immediately notify the editor or publisher of the journal and to cooperate to withdraw the article or to publish an appropriate errata.

Publisher confirmation

In cases of alleged or proven scientific abuse, fraudulent publication or plagiarism, the publisher, in close cooperation with the editors, will take all appropriate measures to clarify the situation and change the article. This includes a quick errata publication or, in the most severe cases, complete withdrawal of the paper.

Bibliographical information

Scientific Journal of the Polish Society of Composite Materials

ISSN (Print): 2084-6096

ISSN (Electronic): 2299-128X

Published since 2001

(formerly: KOMPOZYTY (COMPOSITES) - to 2011 - ISSN 1641-8611)

The publication is indexed by:

Scopus
Emerging Sources Citation Index (ESCI - Thomson Reuters; Clarivate Analytics)
Chemical Abstracts Service
journals scored by the Ministry of Science and Higher Education (Poland)
Library of Congress (USA)
National Library of Poland
BazTech
IndexCopernicus

the Journal is also distributed to libraries and scientific institutions.

Publisher:

Polish Society of Composite Materials Publishing Services

Al. Armii Krajowej 19

42-200 Częstochowa, Poland

tel. +48 34 325 07 21

E-mail: ptmk@ptmk.net

Editing team:

Statistical editor: Ewa Majchrzak
Language editor: Christine Frank-Szarecka
Technical corrector: Zdzisława Tasarz
Typesetting and paging: Dorota Boratyńska

Distribution and subscription:

tel. +48 34 325 07 44;

E-mail: ptmk@ptmk.net

Printed issue 200 copies

The electronic version is available without restrictions (free of charge to all readers).

(Polish Society of Composite Materials, Poland)

Printed version of the Journal is its original.

Recent Articles

2023

Quarterly No. 1, 2023 - show articles

NOVEL RHEOLOGICAL MODELLING OF THERMOSETS AND UNIDIRECTIONAL MONOTROPIC FIBRE-REINFORCED THERMOSET MATRIX COMPOSITESMarian Klasztorny, Daniel B. Nycz
pages 3-21
keywords: Thermoset, Monotropic fibre-reinforced thermoset matrix composite, Elasticity, Rheology, Homogenization, Fractional exponential generic function, Material modelling, Identification, Simulation, Validation
article version pdf (0.81MB)

A refined, fully analytical rheological modelling of thermosetting polymers and unidirectional monotropic fibrereinforced thermoset matrix (UFRT) composites is presented. New polymers and composites under normal conditions, fully relaxed from curing and post-curing stresses, are modelled. The theory includes quasi-static short-term/medium-term/longterm reversible rheological processes. Thermosets are isotropic materials exhibiting linearly viscoelastic shear strains and linearly elastic bulk strains. Fibres are monotropic (transversely isotropic) and linearly elastic materials. A generic function well reproducing the viscoelastic characteristics of thermosets and UFRT composites is a Mittag-Leffler fractional exponential function in an integral form. Coupled/uncoupled standard/inverse constitutive equations of linear rheology are formulated for thermosets and UFRT composites. The equations are mutually analytically transformable. New rheological models (coded H-R/H) for thermosets and UFRT composites are described by the smallest possible number of material constants. The thermoset is described by two independent elastic constants and three independent viscoelastic constants. The homogenized UFRT composite is described by five independent elastic constants and four independent viscoelastic constants, whereby two viscoelastic constants are common to the matrix and the composite. An improved homogenization theory of UFRT composites, based on analytical solutions of the selected tasks of the theory of linear elasticity, is formulated for monotropic fibres and positively validated experimentally. The viscoelastic constants of the thermoset are calculated analytically in an iterative loop using a long-term unidirectional tension creep experimental test. The viscoelastic constants of the UFRT composite are calculated analytically employing H-R/H shear/quasi-shear storage compliances and VECP (the viscoelastic-elastic correspondence principle) shear/quasi-shear storage compliances. The H-R/H rheological model was validated numerically for selected UFRT composites. The validation tests were performed on the enhanced reliability UFRT composites reported by Soden, Hinton, and Kaddour (Composites Science and Technology, 1998, 2002).

EFFECT OF STRAIN RATE ON STATIC ELASTIC RESPONSE OF GLASS-POLYESTER COMPOSITE. PART 1: DESCRIPTION OF TEST METHODMateusz Kozioł
pages 22-29
keywords: glass-polyester laminate, static bending, strain rate, normal stress, elastic modulus in bending, energy dissipation
article version pdf (0.99MB)

This paper is the first of two parts of a pioneering study to evaluate the effect of the strain rate of a GFRP laminate on the stress response. The assessment concerns the elastic range of deformation only. The publication contains the assumptions and methodological description of the conducted experiments. The non-destructive bending tests and the methodology for determining the modulus of elasticity and the energy of the load-unload cycle are presented in detail. The full set of test results is presented in the appendix. The results and conclusions are discussed in the second part of the study, which is a separate publication.

THE ROLE OF THE MATRIX IN SiC REINFORCED COMPOSITESMarcin Madej, Beata Leszczyńska-Madej, Anna Wąsik, Anna Kopeć-Surzyn
pages 30-36
keywords: aluminum matrix, SiC particles, powder metallurgy, properties, microstructure
article version pdf (0.99MB)

This article presents a comparison of the properties of composites based on aluminum or aluminum alloy (Al4Cu) reinforced with silicon carbide SiCp. The main objective was to analyze the possibility of producing an Al + Cu alloy matrix by basic powder metallurgy methods and its influence on the final properties of the composite. The composites were produced by pressing and sintering, basic powder metallurgy techniques, in order to reduce the manufacturing costs. Sintering was carried out in nitrogen due to the favorable effect of this atmosphere on the sintering of aluminum-based materials. Silicon carbide SiC was used as the reinforcing phase. The study clearly showed that the use of a matrix made of a mixture of Al and Cu powders results in an almost twofold increase in hardness (from 32 to about 60 HB) and a more than twofold increase in flexural strength (from about 200 to more than 450 MPa). Observations of the microstructure confirmed the diffusion of copper into the aluminum and the facets of the Al2Cu phase.

EFFECT OF MHA ON TRIBO-BEHAVIOUR OF Al-MHA-Si3N4 HYBRID COMPOSITESMohammad Faris, Mohd Suhaib, Mumtaz Ahmed and Sultana
pages 37-43
keywords: powder metallurgy, metal matrix hybrid composites, SEM, XRD, wear
article version pdf (3.68MB)

In the contemporary research community, hybrid composites with improved performance are merging as a trend, overcoming the drawbacks of conventional composites and satisfying needs in tribological applications. In this work, Al-MHA-Si3N4 hybrid composites reinforced with various weight percentages of mustard husk ash (MHA), 0, 2.5, 5, 7.5% and 10%, produced by powder metallurgy techniques at 300, 400, 500, 600 and 700 MPa compaction pressure were analysed. The microstructural characterization of the metal matrix hybrid composites, followed by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) investigations show the homogeneous distribution of the reinforcement in the metal matrix. A sliding wear study without lubrication was performed on a pin-on-disc wear testing machine under the following sliding conditions: sliding velocity (SV) of 1.5 m/s, sliding distance (SD) of 300 m and applied loads of 25 N and 35 N. The deformation of the worn surfaces was also investigated. It was found that the tribological characteristics of the composites were enhanced by increasing the weight percentage of MHA and the compaction pressure.

EFFECT OF STRAIN RATE ON STATIC ELASTIC RESPONSE OF GLASS-POLYESTER COMPOSITE. PART 2: ANALYSIS OF EXPERIMENTAL RESULTSMateusz Kozioł, Szymon Latusek
pages 44-49
keywords: glass-polyester laminate, static bending, strain rate, normal stress, elastic modulus in bending, energy dissipation
article version pdf (0.73MB)

This paper is the second part of the study aimed at evaluating the influence of the strain rate of the plain weave reinforced GFRP laminate, in the non-destructive static three-point bending test, on the material’s stress response. It was found that the stress level during the entire course of the deflection increases with the increase of the strain rate. The relative change in the stress level is comparable for the 0/90 and 45/45 fiber orientations. As the loading speed increases, the elastic modulus of the material also increases. For an increase in the strain rate from 1.11∙10-3 to 5.57∙10-1 1/s, the increase is 10% for the 0/90 fiber arrangement and 17.7% for the 45/45 fiber arrangement. The dependence of the modulus on the strain rate is logarithmic. Based on the theoretical analysis, the cause of the observed effects of the strain rate on the material response was attributed to the viscoelastic behavior of the matrix (cured polymer resin) and the viscoelastic behavior of the fibers system at the level of the laminate mesostructure.

INVESTIGATION OF STRUCTURAL AND MECHANICAL PROPERTIES OF Al-Al2O3-SiC-WS2 HYBRID COMPOSITES FABRICATED BY POWDER METALLURGYSweta Rani Biswal, Seshadev Sahoo
pages 50-55
keywords: hybrid metal matrix composites (AMCs), ceramic reinforcements, hardness, solid lubricant, tungsten disulphide
article version pdf (0.52MB)

The present study focuses on the fabrication and characterization of novel hybrid Al matrix composites with a combination of two ceramic reinforcements, i.e. Al2O3, SiC and one solid lubricant, i.e. WS2. This hybrid composite was fabricated by means of the powder metallurgy process. The impact of the hybrid combination of reinforcements in different wt.% on the properties of the hybrid composites was studied. The density of the composites increases from 2.689 to 2.796 g/cm3 with an increase in wt.% of WS2. Uniform distribution of the reinforcing particles in the matrix phase was determined by SEM. The results of, for instance, density measurements and microstructural analysis indicate significant improvement in the physical and mechanical properties with the increase in the wt.% of WS2. The microhardness of the as-fabricated composites rises from 98 HV to 119.7 HV with the increase in the wt.% of WS2 from 0 to 6 wt.%. The novel combination of Al with SiC, Al2O3 and WS2 can be used to create a suitable and sustainable hybrid metal matrix composite for the automotive industry as a replacement for single ceramic and single solid lubricant composites.

EVALUATION OF PROPERTIES OF POLYMER-CERAMIC FILAMENTS MODIFIED WITH ALUMINOSILICATES FOR USE IN 3D PRINTINGRafał Twaróg, Michał Sendor, Alicja Rapacz-Kmita, Marcin Gajek, Jakub Marchewka, Ewa Stodolak-Zych
pages 56-63
keywords: nanoclays, fused deposition modeling, 3D printing, additive manufacturing
article version pdf (0.76MB)

A study was conducted on selected nanoclay fillers, i.e. montmorillonite (MMT) or halloysite (HNT) in polylactic acid (PLA) pellets for the manufacture of filaments for 3D printing. A 1-3 weight fraction of the filler was used. In order to compatibilize the nanofiller with the PLA, two methods were employed to facilitate dispersion of the nanoclay particles: using prewetting of the nanoclay in dichloromethane (DCM) and introducing a short-chain plasticizer (polyethylene glycol, PEG200) during the homogenization process. The effectiveness of filler dispersion was verified by performing thermal analysis, i.e. thermogravimetry and differential scanning calorimetry (DG/DSC), as well as by microscopic observations. The processability of the obtained nanocomposite filament was verified for the finished products manufactured from both of the materials by FDM printing. Mechanical strength and impact tests were conducted on the printed samples. The results showed that the prints made from the nanocomposite filaments have better tensile strength (by 25 and 10% for PLA/HNT and PLA/MMT, respectively) compared to prints made from the pure polymer filament.