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Number of results: 23
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Abstract

In this interpretation of Juliusz Słowacki's ‘Snycerz był zatrudniony Dyjanny lepieniem…’ [The carver was busy shaping Diana's statue] the discussion focuses on his attitude to matter, especially as the material of art. The article argues that Słowacki elevates and even sacralises mud, the most lowly of raw materials, and thus exposes the falseness of the popular view that he despises matter, the base opposite of the spirit. However, it would be more accurate to say that in his vision, which is part of his Genesis from the Spirit philosophy, the path to salvation leads through the reconciliation of spirit and matter rather than a triumph of one over the other.
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Authors and Affiliations

Anna Rzepniewska-Kosińska
1
ORCID: ORCID

  1. Zakład Literatury Romantyzmu Instytutu Literatury Polskiej, Uniwersytet Warszawski
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Abstract

This article examines the problems facing a comparative study of the reception of the idea of revolution in some selected writings of G.W.F. Hegel and Joachim Lelewel. Paying due attention to the specificity of the philosophical and historical approach, the article analyses the similarities and differences in Hegel's and Lelewel's appraisals of the revolutionary legacy. It also brings to light a misrepresentation of Lelewel's take on the subject in the German translation of his writings. That said, Hegel's thought remains of vital importance for both Lelewel, who is not convinced by it, and his translator H.J. Handschuch, who eagerly embraces it.
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Authors and Affiliations

Maciej Junkiert
1
ORCID: ORCID

  1. Uniwersytet im. Adama Mickiewicza w Poznaniu
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Abstract

This analysis of selected novels and short stories by Józef Bogdan Dziekoński – Pająk [ The Spider], Siła woli [ Willpower], Piosnka [ A Simple Song], and Wyzwolenie zapaleńca [ The Liberation of Enthusiast] – shows that they share similar narrative structure based on the interception of messages sent by the narrator to an absent ideal recipient by an eaves-dropping intruder who gradually displaces the original addressee. Working within the framework of a romance story Dziekoński develops a philosophy of desire which accepts incompleteness, contingency and disillusionment. They combine in an affirmation of life and an opposition to morbid phantasies or the idea of irreplaceability of love in the myth of l'amour tristanien.
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Authors and Affiliations

Ewa Wojciechowska
1
ORCID: ORCID

  1. Wydział Polonistyki, Uniwersytet Jagielloński
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Abstract

Tomasz Olizarowski (1811–1879) is a largely forgotten author, prolific poet and playwright, known only to a small group of specialists, who have recently started work on restoring his reputation. To do him justice is not easy task as we possess neither a complete list of his publications with basic textual and bibliographic data nor a reliable picture of the critical response they met with. While the body of materials on Olizarowski that have already been identified needs to be ordered and re-examined, the burden of work is growing as new items, also in bad need of verification, continue to surface both in Poland and abroad. This is a progress report of sorts with a number of updates, corrections and clarifications by the author of this article herself.
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Authors and Affiliations

Kamila Supeł
1
ORCID: ORCID

  1. Szkoła Doktorska Nauk Humanistycznych, Uniwersytet Warszawski
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Abstract

Researching intersemiotic relationships between dance and literature poses a real challenge to both literary scholars and choreologists. Fascinating as it is, this aspect of the performative arts is exceptionally difficult to study due to the nonverbal nature of dance. However, once we assume that the two spheres of human expression are complementary, it should be possible to identify a number of intriguing interrelations between the two and to gain insight into a complex web of mutual inspiration and dependency. This article attempts to revisit some of the most important studies dealing with the representation of dance in fiction and the interpretation of dance as text. The list includes both Polish and foreign authors whose work could provide an inspiration and starting point for further research, including comparative studies.
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Authors and Affiliations

Agnieszka Narewska-Siejda
1
ORCID: ORCID

  1. Wydział Polonistyki, Uniwersytet Jagielloński
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Abstract

Józef Birkenmajer (1897–1939) was literary scholar and translator from classical and modern languages. He formulated the concept of ‘co-creative translation’, which assumes that the translator and the author of the original text enjoy the same status of creators. Although he translated a host of English novels, what he liked most was highly rhythmic verse, a preference not hard to detect in the list of his publications. His translations of Rudyard Kipling belong to the classics of the genre. By giving full attention to the poems and rhyming couples in Kipling's stories, Birkenmajer pioneered the notion of integral translation. His habit of lacing his journalism and other forms of writing with memorable verses from Kipling's books led many Polish readers to see Kipling primarily as a poet. Birkenmajer was also a translator of the poems and fiction of Edgar Allan Poe, on whose ‘Raven’ he worked in late 1937/early 1938 (it was eventually published in April 1938). While his experiments with obsolete vocabulary and dialect words were on the whole unsuccessful, many of his translations continue to spellbind new generations of readers.
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Authors and Affiliations

Aleksandra Budrewicz
1

  1. Uniwersytet Pedagogiczny im. KEN w Krakowie

Authors and Affiliations

Jarosław Ławski
1

  1. Wydział Filologiczny, Uniwersytet w Białymstoku
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Abstract

Analytical design of the PID-type controllers for linear plants based on the magnitude optimum criterion usually results in very good control quality and can be applied directly for high-order linear models with dead time, without need of any model reduction. This paper brings an analysis of properties of this tuning method in the case of the PI controller, which shows that it guarantees closed-loop stability and a large stability margin for stable linear plants without zeros, although there are limitations in the case of oscillating plants. In spite of the fact that the magnitude optimum criterion prescribes the closed-loop response only for low frequencies and the stability margin requirements are not explicitly included in the design objective, it reveals that proper open-loop behavior in the middle and high frequency ranges, decisive for the closed-loop stability and robustness, is ensured automatically for the considered class of linear systems if all damping ratios corresponding to poles of the plant transfer function without the dead-time term are sufficiently high.
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Authors and Affiliations

Jan Cvejn
1

  1. University of Pardubice, Faculty of Electrical Engineering and Informatics, Studentska 95, 532 10 Pardubice, Czech Republic
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Abstract

In this work, we present results for a new dissipative jerk chaotic system with three quadratic terms in its dynamics.We describe the bifurcation analysis for the new jerk system and also show that the proposed system exhibits multi-stability. Next, we describe a backstepping control-based synchronization design for a pair of new jerk chaotic systems. MATLAB simulations are put forth to exhibit the various findings in this work. Furthermore, we exhibit a circuit simulation for the new jerk system using MultiSim.
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Authors and Affiliations

Sundarapandian Vaidyanathan
1
Khaled Benkouider
2
Aceng Sambas
3

  1. School of Electrical and Computing, Vel Tech University, 400 Feet Outer Ring Road, Avadi, Chennai-600092, Tamil Nadu, India
  2. Non Destructive Testing Laboratory, Automatic Department, Jijel University, BP 98, 18000, Jijel, Algeria
  3. Department of Mechanical Engineering, Universitas Muhammadiyah Tasikmalaya, Tasikmalaya 46196, West Java, Indonesia
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Abstract

This work addresses the problem of adaptive observer design for nonlinear systems satisfying incremental quadratic constraints. The output of the system includes nonlinear terms, which puts an additional strain on the design and feasibility of the observer, which is guaranteed under the satisfaction of an LMI, and a set of algebraic constraints. A particular case where the output nonlinearity matches the unknown parameter coefficient is also discussed. The result is illustrated through a numerical example for the chaos synchronization of the Rössler system.
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Authors and Affiliations

Lazaros Moysis
1
Meenakshi Tripathi
2
Mahendra Kumar Gupta
2
Muhammad Marwan
3
Christos Volos
1

  1. Laboratory of Nonlinear Systems – Circuits & Complexity, Physics Department, Aristotle University of Thessaloniki, Thessaloniki, Greece
  2. Department of Mathematics, National Institute of Technology Jamshedpur, Jamshedpur, India
  3. Department of Mathematics, Zhejiang Normal University, Jinhua, China
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Abstract

The recently proposed q-rung dual hesitant fuzzy sets ( q-RDHFSs) not only deal with decision makers’ (DMs’) hesitancy and uncertainty when evaluating the performance of alternatives, but also give them great liberty to express their assessment information comprehensively. This paper aims to propose a new multiple attribute decision-making (MADM) method where DMs’ evaluative values are in form of q-rung dual hesitant fuzzy elements ( q-RDHFEs). Firstly, we extend the powerful Schweizer-Sklar q-norm and t-conorm (SSTT) to q-RDHFSs and propose novel operational rules of q-RDHFEs. The prominent advantage of the proposed operations is that they have important parameters q and r, making the information fusion procedure more flexible. Secondly, to effectively cope with the interrelationship among attributes, we extend the Hamy mean (HM) to q-RDHFSs and based on the newly developed operations, we propose the q-rung dual hesitant fuzzy Schweizer-Sklar Hamy mean ( q-RDHFSSHM) operator, and the q-rung dual hesitant fuzzy Schweizer-Sklar weighted Hamy mean ( q-RDHFSSWHM) operator. The properties of the proposed operators, such as idempotency, boundedness and monotonicity are discussed in detail. Third, we propose a new MADM method based on the q-RDHFSSWHM operator and give the main steps of the algorithm. Finally, the effectiveness, flexibility and advantages of the proposed method are discussed through numerical examples.
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Authors and Affiliations

Yuan Xu
1
Jun Wang
2

  1. School of Economics and Management, Beijing Jiaotong University, Beijing 100044, China
  2. School of Economics and Management, Beijing University of Chemical Technology, Beijing 100029, China
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Abstract

In model predictive control (MPC), methods of linear offset free MPC are well established such as the disturbance model, the observer method and the state disturbance observer method. However, the observer gain in those methods is difficult to define. Based on the drawbacks observed in those methods, a novel algorithm is proposed to guarantee offset-free MPC under model-plant mismatches and disturbances by combining the two proposed methods which are the proposed Recursive Kalman estimated state method and the proposed Disturbance-Kalman state method. A comparison is made from existing methods to assess the ability of providing offset-free MPC onWood-Berry distillation column. Results shows that the proposed offset free MPC algorithm has better disturbance rejection performance than the existing algorithms.
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Authors and Affiliations

Truong Thanh Tuan
1
Haslinda Zabiri
2
Mohammad Ibrahim Abdul Mutalib
2
Dai-Viet N. No
3

  1. Petrovietnam University, 762 Cach Mang Thang Tam Street, Long Toan Ward, Ba Ria City 78109, Ba Ria Vung Tau Province, Vietnam
  2. Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610 Tronoh, Perak, Malaysia
  3. Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City755414, Viet Nam
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Abstract

A large class of nonlinear systems can be represented or well approximated by Takagi- Sugeno (TS) fuzzy models, which in theory can approximate a general nonlinear system to an arbitrary degree of accuracy. The TS fuzzy model consists of a fuzzy rule base. The rule antecedents partition a given subspace of the model variables into fuzzy regions, while the consequent of each rule is usually a linear or affine model, valid locally in the corresponding region. In this paper, the observer design problem for a T-S fuzzy system subject to Lypschitz perturbation is investigated. First, an observer of Kalman type is designed to estimate the unknown system states. Then, the class of one-sided Lipschitz for a TS fuzzy system subject to a sufficient condition on the bound is studied. The challenges are discussed and some analysis oriented tools are provided. An example is given to show the applicability of the main result.
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Authors and Affiliations

Francois Delmotte
1
Mohamed Ali Hammami
2
Nour El Houda Rettab
2

  1. University of Artois, Bethune, France
  2. University of Sfax, Faculty of Sciences of Sfax, Tunisia
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Abstract

Coexisting self-excited and hidden attractors for the same set of parameters in dissipative dynamical systems are more interesting, important, and difficult compared to other classes of hidden attractors. By utilizing of nonlinear state feedback controller on the popular Sprott- S system to construct a new, unusual 4D system with only one nontrivial equilibrium point and two control parameters. These parameters affect system behavior and transformation from hidden attractors to self-excited attractors or vice versa. As compared to traditional similar kinds of systems with hidden attractors, this system is distinguished considering it has (��-2) positive Lyapunov exponents with maximal Lyapunov exponent. In addition, the coexistence of multi-attractors and chaotic with 2-torus are found in the system through analytical results and experimental simulations which include equilibrium points, stability, phase portraits, and Lyapunov spectrum. Furthermore, the anti-synchronization realization of two identical new systems is done relying on Lyapunov stability theory and nonlinear controllers strategy. lastly, the numerical simulation confirmed the validity of the theoretical results.
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Authors and Affiliations

Saad Fawzi Al-Azzawi
1
Maryam A. Al-Hayali
1

  1. Department of Mathematics, College of Computer Science and Mathematics, University of Mosul, Mosul, Iraq
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Abstract

Propofol infusion in anesthesia administration requires continual adjustment in the manual infusion system to regulate the hypnosis level. Hypnotic level is based on Bispectral Index Monitor (BIS) showing the cortical activity of the brain scaled between 0 to 100. The new challenging aspect of automation in anaesthesia is to estimate the concentration of hypnotic drugs in different compartments of the body including primary, rapid peripheral (muscle), slow peripheral (bones, fat) and effect site (brain) compartment based on Pharmacokinetics (PK) and Pharmacodynamics (PD) model. This paper aimed to regulate the hypnosis level with estimating the Propofol concentrations using a linear observer in feedback control strategy based on Integral Super-Twisting Sliding Mode Controller (ISTSMC). The drug concentration in plasma of the silico patients accurately estimated in nominal transient. The results show that tracking errors between the actual output in form of BIS level and linearized output nearly approaches to zero in the maintenance phase of anesthesia to ensure the controller response on sliding phase with optimum performances by achieving desired hypnotic level 50 on BIS. The robustness of control strategy is further ensured by adding measurement noise of electromagnetic environment of operation theatre distracting signal quality index of the output BIS level.
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Authors and Affiliations

Muhammad Ilyas
1
Awais Khan
2
Muhammad Abbas Khan
3
Wei Xie
4
Raja Ali Riaz
5
Yousaf Khan
6

  1. Department of Electrical Engineering, Balochistan University of Engineering and Technology Khuzdar, Pakistan
  2. College of Mechatronics and Control Engineering and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China
  3. Department of Electrical Engineering, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta, Pakistan
  4. College of Automation Science and Technology, South China University of Technology, Guangzhou 510641, People’s Republic of China
  5. Department of Electrical and Computer Engineering, Comsats University Islamabad 45550, Pakistan
  6. Department of Electrical Engineering, Univeristy of Engineering and Technology Peshawar, Peshawar, Pakistan
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Abstract

The concepts of full-order and reduced-order observers are extended to the fractional linear continuous-time systems. Necessary and sufficient conditions for the existence of the observers for fractional linear systems are established. Procedures for designing of the observers are given and illustrated by examples.
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Authors and Affiliations

Tadeusz Kaczorek
1
ORCID: ORCID

  1. Białystok University of Technology, Faculty of Electrical Engineering, Wiejska 45D, 15-351 Białystok, Poland
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Abstract

Aiming at the problem of DC voltage control deviation and instability caused by a large-scale renewable energy access VSC–MTDC system, this paper combines voltage margin control and droop control. A strategy for controlling collaborative optimization in a sparsely distributed communication network has been proposed. Firstly, the distributed modeling of the system is carried out by combining MAS technology with small signal modeling. Then, a distributed model predictive controller is designed for a single droop control converter station. On this basis, a distributed cooperative optimization control strategy is proposed. According to the DC voltage deviation, the system adopts different control methods to control the receiving converter station. Finally, based on PSCAD/EMTDC and MATLAB co-simulation platforms, a six-terminal flexible HVDC system is built to verify the effectiveness of the control strategy under different conditions such as input power fluctuation, any converter station out of operation and system communication failure.
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Authors and Affiliations

Jingye Li
1
Haiying Dong
2

  1. School of Automation and Electrical Engineering, Lanzhou Jiaotong University, China
  2. School of New Energy and Power Engineering, Lanzhou Jiaotong University, China
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Abstract

Magnetic hysteresis occurs in most electrical engineering devices once soft ferromagnetic materials are exposed to relatively high temperatures. According to several scientific studies, magnetic properties are strongly influenced by temperature. The development of models that can accurately describe the thermal effect on ferromagnetic materials is still an issue that inspires researchers. In this paper, the effect of temperature on magnetic hysteresis for ferromagnetic materials is investigated using a self-developed numerical method based on the Preisach distribution function identification. It employs a parameter depending on both temperature and the Curie temperature. This approach is of the macroscopic phenomenological type, where the variation of the magnetization (in direct connection with the Preisach triangle) is related to the observed macroscopic hysteretic behavior. The isotropic character of the material medium is predominant. The technique relies on a few experimental data extracted from the first magnetization curve provided by metallurgists. The ultimate goal is to provide a simple and robust magnetic behavior modeling tool for designers of electrical devices. Temperature is introduced at the stage of identifying the distribution function of the Preisach model. This method is validated by the agreement between the experimental data and the simulation results. The developed method is very accurate and efficient in modeling the hysteresis of ferromagnetic materials in engineering particularly for systems with ferromagnetic components and electromagnetic-thermal coupling.
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Authors and Affiliations

Leila Chelghoum
1
ORCID: ORCID

  1. University Hadj Lakhdar Batna1, Batna, Algeria
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Abstract

Climate change is driving the transformation of energy systems from fossil to renewable energies. In industry, power supply systems and electro-mobility, the need for electrical energy storage is rising sharply. Lithium-based batteries are one of the most widely used technologies. Operating parameters must be determined to control the storage system within the approved operating limits. Operating outside the limits, i.e., exceeding or falling below the permitted cell voltage, can lead to faster aging or destruction of the cell. Accurate cell information is required for optimal and efficient system operation. The key is high-precision measurements, sufficiently accurate battery cell and system models, and efficient control algorithms. Increasing demands on the efficiency and dynamics of better systems require a high degree of accuracy in determining the state of health and state of charge (SOC). These scientific contributions to the above topics are divided into two parts. In the first part of the paper, a holistic overview of the main SOC assessment methods is given. Physical measurement methods, battery modeling, and the methodology of using the model as a digital twin of a battery are addressed and discussed. In addition, adaptive methods and artificial intelligence methods that are important for SOC calculation are presented. Part two of the paper presents examples of the application areas and discusses their accuracy.
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Authors and Affiliations

Marcel Hallmann
1
ORCID: ORCID
Christoph Wenge
2
ORCID: ORCID
Przemyslaw Komarnicki
1
ORCID: ORCID

  1. Magdeburg–Stendal University of Applied Sciences, Germany
  2. Fraunhofer IFF Magdeburg, Germany
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Abstract

A new double stator permanent magnet machine having two sets of alternating current (AC) windings in separate stators is proposed in this study. The proposed machine is appropriate for low-speed direct-drive applications. 2D- and 3D-finite element analysis (FEA) is adopted in the result predictions. The considered machine elements are: coil and phase flux linkage, coil and phase induced-electromotive force (EMF), copper loss, current density and torque characteristics. The analysis shows that the studied permanent magnet (PM) machine has better electromagnetic performance than its single-stator equivalent. Moreover, the proposed machine has potential for higher reliability if the separate stators are used independently. The effect of design parameters on open-circuit flux linkage and induced-electromotive force, as well as on the average electromagnetic torque of the proposed double stator machine is also presented. It is observed that for each of the investigated design variables, there is a need to select the optimal value in order to achieve the best average torque. The investigated design parameters are: the split ratio, magnet thickness, rotor radial thickness, inner stator tooth-width, rotor inner and outer iron-width/pitch ratio, and stator yoke size.
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Authors and Affiliations

Chukwuemeka Chijioke Awah
1
ORCID: ORCID

  1. Michael Okpara University of Agriculture Umudike, Nigeria
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Abstract

Thermal energy encounters a huge demand in the world, part of which can be met by renewable energy sources, such as solar energy, and storage of thermal energy surplus from industrial processes. For this purpose, thermal energy storage (TES) units, in which heat is stored, are developed. The energy is accumulated by phase change materials (PCM) characterized by high phase transition enthalpy. PCMs have poor thermal conductivity; therefore, to take full advantage of their capabilities and to accelerate the charging and discharging cycle, metallic structures are used. These structures are manufactured using investment casting technology. Creating models with additive methods, such as 3D printing, allows obtaining complex shapes with high accuracy, such as thin-walled castings. At a large scale, the method may not be cost-effective. In this paper, the heat exchanger models were made from PLA and the castings - from AC44200 aluminum alloy. Investment casting requires the proper selection of parameters, such as the right material for the model, the selection of the firing temperature, the adjustment of the temperature of the molten metal, the temperature of the mold, and the pressure in it. Misaligning any of the parameters can lead to imperfections on the finished casting. Based on the model roughness study, it was found that minor roughness and higher accuracy are presented by the lower parts of the casting, while weaker performance is observed for the upper parts. Metal castings in a salt PCM environment may be subjected to corrosion. Therefore, the authors proposed to produce protective coatings on aluminum castings by the PEO method - plasma electrolytic oxidation. Porous ceramic thin films consisting mainly of alumina were obtained. The next tests will be aimed to confirm whether this layer will not negatively influence the thermal conductivity of the thermal energy storage.
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Authors and Affiliations

N. M. Raźny
1
ORCID: ORCID

  1. Department of Lightweight Elements Engineering, Foundry and Automation, Wrocław University of Science and Technology, Wyb. Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland
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Abstract

Aluminum and its alloys are one of the most favored metal-based materials for engineering applications that require lightweight materials. On the other hand, composites are getting more preferable for different kinds of applications recently. Boron nitride nanotubes (BNNTs) are one of the excellent reinforcement materials for aluminum and its alloys. To enhance mechanical properties of aluminum, BNNTs can be added with different processes. BNNT reinforced aluminum matrix composites also demonstrate extraordinary radiation shielding properties. This study consists of BNNT reinforced aluminum matrix composite production performed by casting method. Since wetting of BNNT in liquid aluminum is an obstacle for casting, various casting techniques were performed to distribute homogeneously in liquid aluminum. Different methods were investigated in an aim to incorporate BNNT into liquid method as reinforcement. It was found that UTS was increased by 20% and elongation at fracture was increased by 170% when BNNT was preheated at 800°C for 30 minutes.
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Authors and Affiliations

B. Nemutlu
1
ORCID: ORCID
O. Kahraman
1
ORCID: ORCID
K. B. Demirel
1
ORCID: ORCID
I. Erkul
1
ORCID: ORCID
M. Cicek
1
ORCID: ORCID
H. Sahin
1
ORCID: ORCID
K.C. Dizdar
1
ORCID: ORCID
D. Dispinar
1
ORCID: ORCID

  1. Istanbul Technical University, Turkey

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