Wyniki wyszukiwania - Biblioteka Nauki

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W dniu 3 stycznia 2007 roku zmarł ŚP. Prof. zw. dr hab. inż. Jan Adamczyk Honorowy Profesor Politechniki Śląskiej

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Dobrzański L. A.

Rudy i Metale Nieżelazne

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2007

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tom R. 52, nr 2

118-120

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Synergic effects of the scientific cooperation in the field of materials and manufacturing engineering

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Dobrzański L. A.

Journal of Achievements in Materials and Manufacturing Engineering

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2006

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tom Vol. 15, nr 1-2

9--20

EN

Purpose: The paper emphasises the very significant role of materials selection for design and manufacturing processes of new needed products, having the highest attainable quality and performance at the optimum and possibly the lowest cost level. Design/methodology/approach: The engineering design processes cannot be set apart either from the material design, being more and more often computer-aided, or the technological design of the most suitable manufacturing processes. Findings: The attention was paid to synergic effects of the cooperation with the specialists of various branches what was a basis of the successful series of the International Scientific Conference AMME and the foundation of the World Academy of Materials and Manufacturing Engineering. Practical implications: The paper includes also the description of the world developmental trends in that area in the first decades of the 21st century. The tasks of that field of science in priority spheres of the world development are determined. Originality/value: Directions of activities of materials science and engineering ensuring the achievements of strategic aims of the developments of societies include materials design, computational materials science, advanced analytical methods, manufacturing and processing, nano-, smart and biomimetic materials are included. It is concluded that there is a humanistic mission which stands at the engineering circle, especially associated with materials and manufacturing engineering and its aim is to make products and consumer goods, deciding directly about the level and quality of human life.

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The significance of the nanostructural components on the properties of the nanoengineering materials

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Dobrzański L. A.

Journal of Achievements in Materials and Manufacturing Engineering

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2018

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tom Vol. 88, nr 2

55--85

EN

Purpose: In the paper, the own original achievements and a mature view of the current development of advanced nanotechnology materials are presented. Design/methodology/approach: The paper should be treated as an auto-review of the own research in the area. The paper is preceded by a short historical sketch and the development of the concept and meaning of nanotechnology and nanostructured materials. Respectively, the following issues are described: the nanocomposites containing carbon or halloysite nanotubes, graphene and metallic nanowires, nanostructured coatings and surface zones of engineering materials, a creation of the nanometric components of the structure of massive materials, nanocomposite materials designed mainly for use in regenerative medicine and regenerative dentistry. Practical implications: In final remarks, the attention is paid to applications of nanotechnology in many products sought on the market and improve their properties and applicability.

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60-lecie działalności Wydziału Mechanicznego Technologicznego Politechniki Śląskiej w Gliwicach

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Dobrzański L. A.

Mechanik

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2005

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tom R. 78, nr 4

295-301

PL

Przedstawiono rys historyczny Wydziały Mechanicznego Technologicznego, jako jednego z czterech najstarszych i obecnie największych Wydziałów Politechniki Śląskiej w Gliwicach. Omówiono strukturę organizacyjną Wydziału oraz zakres aktywności naukowej i dydaktycznej, a także współpracę zagraniczną. Zaprezentowano cele Światowego Kongresu "COMMENT 2005" zorganizowanego z okazji 60-lecia Wydziału.

EN

A history of one of the four eldest and currently the biggest Faculty in the Silesian Technical University, Gliwice. Objectives of the World Congress "COMMENT 2005" arranged on the occasion of the sixtieth anniversary of the Faculty are also presented.

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The examples of the research of the nanostructured engineering materials and the concept of the new generation of highly innovative advanced pioneering nanostructured composite materials

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Dobrzański L. A.

Archives of Materials Science and Engineering

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2016

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tom Vol. 82, nr 1

5--37

EN

Purpose: The first part of the paper presents the outcomes of a dozen of own researches in the field of nanotechnology, carried out over the last several years. The second part of the paper presents the new Author’s ideas on the predicted development of the new generation of highly innovative advanced pioneering nanostructured composite materials through the interaction of the extended nanoengineering components. Design/methodology/approach: Each of the selected topics was briefly described, with special emphasis laid on the issue of structural and phase transitions, which are generally taking place in the newly created original engineering materials and their related original technologies. Each of the descriptions was arbitrarily illustrated with a metallographic photographs made with electron microscopes, most often a transmission microscope, mainly a high-resolution or scanning microscope. The scientific objective of the planned research is to recognise and explain the relevant structural mechanisms, in each case, of synthesis and/or production and formulation of the structure and properties of a new generation of pioneering nanostructured composite materials through the interaction of the extended nanoengineering components and to characterise and model their structure and properties depending on the compositional, phase and chemical composition and the applied synthesis and/or production and/or processing processes. Findings: The research covered by the paper is pursued in the field of nanotechnology as the designing and manufacture of structures with new properties resulting from a nanosize. The planned research is of priority cognitive importance as theoretical considerations, indicate a great need to intensify scientific research to develop new groups of materials with completely unexpected foreseeable effects, resulting from the use of the extended nanoengineering components for manufacturing super advanced nanocomposite materials. Phenomena and processes at a nanoscale can be better recognised by producing a new generation of functional nanostructural materials. Practical implications: The measurable scientific effects concern the cognitive nature of the planned research and are associated with the determination of: the effect of compositional, phase and chemical composition, of the newly developed technologies of fabrication and surface micro-treatment inside pores, of internal precipitated phases or nanoinclusions or surface treatment of micropores in order to apply nanomaterials enabling the improvement of specific properties on the structure and properties of the newly created nanocomposite materials with the extended nanoengineering components ensuring the improvement of specific properties and the modelling of the structure and properties of the researched newly created nanocomposite materials using artificial intelligence methods. The research will comprise the fabrication of materials with new unforeseeable properties fulfilling multiple functions. Originality/value: Phenomena and processes at a nanoscale can be better recognised by producing a new generation of functional nanostructural materials (physicochemical basis of nanomaterials and nanostructures synthesis, with controlled architecture and properties, engineering of atomic and molecular bonds, models and theories explaining the properties of nanomaterials, surface phenomena, self-assembly phenomena in nanomaterials and nanostructures synthesis, magnetic phenomena in semiconducting and metallic nanostructures).

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60-lecie działalności Wydziału Mechanicznego Technologicznego Politechniki Śląskiej w Gliwicach

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Dobrzański L. A.

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tom R. 10, z. 1/2

5-19

PL

W artykule przedstawiono rys historyczny Wydziału Mechanicznego Technologicznego jako jednego z 4 najstarszych i obecnie największych Wydziałów Politechniki Śląskiej w Gliwicach. Przedstawiono strukturę organizacyjną Wydziału oraz zakres aktywności naukowej i dydaktycznej, a także współpracę zagraniczną. Zaprezentowano cele Światowego Kongresu "COMMENT'2005" organizowanego z okazji 60-lecia Wydziału.

EN

In the paper the historical profile of the Faculty of Mechanical Engineering as one of the oldest and at present the biggest Faculties of the Silesian University of technology in Gliwice has been presented. The organisational structure and the scientific and didactic scope of the Faculty and the international cooperation have been described. The aims of the COMMENT' 2005 Worldwide Congress organised on the occasion of the 60lh anniversary of the Faculty has been written.

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Koncepcja nauczania inżynierii materiałowej na wydziałach mechanicznych

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Dobrzański L. A.

Inżynieria Materiałowa

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2000

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tom R. XXI, nr 5

196-205

PL

W artykule przedstawiono strukturę studiów realizowanych na Wydziale MechanicznymTechnologicznym Politechniki Śląskiej w Gliwicach zgodnych z europejskim elastycznym trójstopniowym systemem studiów E2TS2 i możliwości podejmowania studiów dziennych I stopnia inżynierskich, uzupełniających II stopnia magisterskich, jednolitych magisterskich oraz studiów doktoranckich. Scharakteryzowano nowo wprowadzone ogólne plany studiów na czterech kierunkach oraz pięć profili specjalizacyjnych wprowadzonych na kierunku Mechanika i Budowa Maszyn. Opisano istotę uchwalonego wydziałowego systemu punktowego ECTS oraz ogólnie zaprezentowano specjalności dydaktyczne dostępne dla studentów. Na tym tle szczególnie wyeksponowano koncepcję nauczania nauki o materiałach oraz inżynierii materiałowej na wydziałach mechanicznych.

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Współczesne tendencje rozwojowe nauki o materiałach i inżynierii materiałowej

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Dobrzański L. A.

Inżynieria Materiałowa

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2003

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tom R. XXIV, nr 6

271-278

PL

Praca dotyczy opisu światowych tendencji rozwojowych nauki o materiałach i inżynierii materiałowej w pierwszych dziesięcioleciach XXI wieku. Szczególną uwagę zwrócono na interdyscyplinarny charakter omawianej dyscypliny nauki oraz przedstawiono zakres jej zainteresowań. Podstawowym celem nauki o materiałach i inżynierii materiałowej jest dobór materiałów zapewniających wymagane funkcje i własności użytkowe wytwarzanych z nich produktów. Wyznaczono zadania tej dyscypliny nauki w priorytetowych sferach rozwoju światowego, do których zaliczono poprawę warunków życia, system ochrony zdrowia, komunikację i przesył informacji, rozwój dobór konsumpcyjnych oraz transport. Wśród kierunków działań nauki o materiałach i inżynierii materiałowej, zapewniających osiągnięcie celów strategicznych rozwoju społeczeństw wymieniono projektowanie materiałowe, komputerową naukę o materiałach, rozwinięte techniki analityczne, wytwarzanie i przetwórstwo, nanomateriały oraz materiały inteligentne i biomimetyczne. W podsumowaniu wskazano na humanistyczną misję stojącą przed środowiskiem inżynierskim i istotną rolę, jaką w tym odgrywa inżynieria materiałowa oraz na bezwzględną potrzebę inwestowania w naukę o materiałach, dla osiągania nowoczesnego postępu technologicznego i zapewnienia dobrobytu społeczeństw w przyszłości.

EN

The work concerns the description of the world developmental trends in materials science and egineering in the first decades of the 21th century. The special attention has been paid to the interdisciplinary character of the discussed field of science and the range of its interests has been presented. The fundamental aim of materials science and engineering is materials selection ensuring required functions and appplication properties of products which are manufactured out of them. The tasks of that field of science in priority spheres of the world development, which include the improvement of life conditions, the system of health protection, communication and information transmission, the development of consumptional goods and transport, have been determined. Among directions of activities of materials science and engineering ensuring the achievements of strategic aims of society developments, materials design, computational materials science, advanced analytical methods, manufacturing and processing, nano- , smart and biomimetic materials. In the conclusion a humanistic mission standing at the engineering circle and the crucial role which is played there by materials science and a strict need of investing in materials science to achieve modern technological development and to ensure prosperity of societies in future have been pointed out.

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Report on the main areas of the materials science and surface engineering own research

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Dobrzański L. A.

Journal of Achievements in Materials and Manufacturing Engineering

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2011

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tom Vol. 49, nr 2

514--549

EN

Purpose: The purpose of the paper is to present the representative examples for the own scientific research in the area of the forming of the structure and properties of engineering materials including biomaterials, their properties testing and microstructure characterisation and modelling, simulation and prediction of the properties and structure of these materials after selected materials processing technologies. Design/methodology/approach: The main areas of the scientific interests reported in this paper on the basis of the own original research include forming of structure and properties of engineering materials including biomaterials using advanced synthesis and materials processing technologies and nanotechnologies, engineering materials including biomaterials properties testing and microstructure characterisation using very advanced contemporary research methodologies including electron microscopy, modelling, simulation and prediction of properties and structure of engineering materials including biomaterials using advanced methods of computational materials science including artificial intelligence methods. Findings: A general character of the paper concerning many aspects of material science research enabled a detailed description of research methodology and details concerning research results. Detailed information is included in many detailed cited works. Practical implications: Presented research results can be used in practice. Originality/value: The paper presents numerous research results which Has been made during last years generalising the achievements of the research team directed by the author.

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Applications of newly developed nanostructural and microporous materials in biomedical, tissue and mechanical engineering

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Dobrzański L. A.

Archives of Materials Science and Engineering

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2015

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tom Vol. 76, nr 2

53--114

EN

Purpose: The purpose of the paper is to present the main results of own research in 3 principal aspects indicating that the research is up to date and modern. This relates to nanotechnologies, modern biomedical materials and rapid manufacturing techniques used for the production of, in particular, microporous materials applied for medical and dental purposes. The paper comprises the explanation of structural mechanisms and phase transformations taking place in newly created engineering nanostructural and microporous materials under the influence of the applied, advanced technological processes newly developed, and especially nanotechnological processes, using the most modern scientific and research equipment being at disposal of modern materials engineering, in particular with the common use of high-resolution transmission electron microscopy (HRTEM). The results of investigations into the formation of the structure and surface properties results according to a different thickness scale of coatings or surface zone, from several hundred nanometres to several millimetres, are presented in the paper, including PVD and CVD coatings and laser treated surface on the steels and light alloys substrates. The paper also describes the nanostructural effects in solid materials, and especially the counteraction of cracking of new-developed high-manganese austenite steels Fe-Mn-Si-Al by twinning or/and martensitic transformation induced by the cold plastic deformation. The article also outlines the results of research of the development of special micro and nanocomposite materials designed mainly for use in regenerative medicine and regenerative dentistry. The studies of the structure and the properties of newly obtained materials and originally developed technologies are included to present the author’s contribution into materials science, nanotechnology, surface engineering and biomedical engineering including the usefulness of the newly developed nanoengineering materials and their applicability, in particular, in regenerative medicine, as well as tissue engineering. The described outcomes of the research constitute a basis for creating, apart from rigid porous implant-scaffolds, an innovative generation of rigid and elastic biological-engineering composite materials for regenerative medicine. Design/methodology/approach: The article discusses the key aspects of own research performed over the last decade in scope of nanotechnologies, modern biomedical materials and rapid manufacturing techniques used for the fabrication of, in particular, microporous materials applied for medical and dental purposes. The conditions for the performance of the research according to the scope mentioned were ensured by implementation of investment projects for constructing and equipping research and didactic laboratories in scope of nanotechnology, technologies of material processes and computational materials science, including LANAMATE (2010-2014) and MERMFLEG (2010-2013), and also BIOFARMA (2010-2012). Practical implications: The obtained materials and technologies are of high practical importance, which was confirmed in many cases with the results of laboratory tests and investigations at a semi-technical scale, and in some cases with the initiation of implementation works. The results of research in scope of bioengineering and dental engineering may find their applications in tissue engineering, in bone surgery, for threedimensional tissue scaffolds and in dentistry or oncology, to replace the natural tissue removed because of a cancer with the possibility of applying a therapeutic agent. Originality/value: The present paper is the original report from a personal own research and explains the concept, scope and results of own research of a new obtained microporous and nanostructural materials and coatings, including hybride solid-porous products and newly obtained materials processing and additive technologies. Some of the mentioned research results are protected by patents or patent applications, and many of them were awarded over 60 prizes and medals at international fairs of innovation, invention and rationalisation in many countries.

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The concept of biologically active microporous engineering materials and composite biological-engineering materials for regenerative medicine and dentistry

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Dobrzański L. A.

Archives of Materials Science and Engineering

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2016

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tom Vol. 80, nr 2

64--85

EN

Purpose: The concept presented in this study proposes indirect solutions, both, rigid ones involving high strength and transmission of high mechanical loads, and ones which are elastic, thin and light as fog, when a very light dressing supplying living cells is applied to an extensive wound, e.g. on skin, in a way ensuring their fast fusion with the defected surface of body. They are proposed implant-scaffolds, i.e. rigid devices composed of a solid metal core and a surface or transition porous zone into which living cells may grow. The pores are so small that hair or even a very thin needle can be placed there. The interior of such openings, extending along the entire part of material, needs to be covered from the inside with a very thin coating which can be accepted by living cells so that they can develop in such conditions and penetrate such openings deep inside. Design/methodology/approach: The material solutions proposed in the study result from a synergy of methods of technical sciences, including materials engineering and chemical sciences, in consistency with the adopted author’s assumptions, but, in particular, depending on the specificity of clinical conditions and biological sciences, also tissue engineering, in the context of medical sciences, including tissue therapy, require a multiaspect state-of-the-art analysis and the resulting specific scientific problems which should be solved and their pioneering character. Taking into consideration the lack of references in the literature to the overall analysis of the issue, separate aspects are analysed further in this study concerning biologically active cellular structures and a substrate with an engineering composite material matrix used for scaffolds and newly developed implant-scaffolds. Findings: In consideration of the principal research intention of the presented research concept, pertaining to the development of hybrid and multilayer biological-engineering composite materials, including rigid and elastic ones, composed not only of biologically active cellular structures, the state-of-the-art of which is presented earlier, but also of a substrate with an engineering material matrix, with an optimally selected type, chemical composition and a nanometric structure, fulfilling a carrier function, and in fact a scaffold for biological structures required to have an appropriate array of mechanical properties and rigidity, allowing applications in therapeutic conditions, as well as physiochemical properties, permitting to fully control the behaviour of the whole biological- engineering composite material upon achieving the therapeutic aims defined by medical reasons, it is necessary to consider the material and technological aspects allowing to accomplish the abovementioned assumptions in the current state of technology. Practical implications: Despite obvious technological progress seen in the recent period in the fabrication of cell-based products and in cell-based therapies, it should be acknowledged that therapies based on implantable devices together with the participation of growing cells, and especially the mass technological processes required by such therapies, are still in a relatively incipient phase of technological development, leaving a lot of space for original and pioneering basic research. The basic research performed in the study will represent a solid basis for undertaking application works in the future, allowing to fabricate a new generation of concrete products unknown today, which will find their application in regenerative medicine and dentistry for treating various internal and external disorders associated with, e.g. burning, healing or severe wounds and injuries, removal of consequences of oncological or post-injury disorders. Originality/value: The primary scientific aim of the presented research concept is to verify a research thesis that it is possible and relevant to develop multilayer biological-engineering composite materials having clinical readiness, partially artificial ones, using Selective Laser Sintering (SLS), to fabricate microporous rigid titanium and titanium alloy skeletons or for polymer nanofiber electrospinning to produce microporous elastic mats, and partially biological ones consisting of living cells filling the appropriately prepared pores in the mentioned microporous materials. Cognitive aspects concern the recognition of phenomena and mechanisms associated with fabrication of the so understood biologically active microporous engineering material being, in essence, a biological-engineering composite material, and of surface phenomena and mechanisms taking place between individual layers of this unique material and their influence on manufacturing processes, both, in the engineering as well as biological part, and on the behaviour of particular layers and joint zones between such layers during material fabrication, as well as in conditions simulating therapy preparation and duration, and alternatively during the non-destructive separation of cellular structures from a substrate from a composite engineering material substrate on which cells are grown, but already after fulfilling the intended therapeutic function, if the material is not permanently left in the organism.

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Słowo wstępne w 60-lecie działalności Wydziału Mechanicznego Technologicznego Politechniki Śląskiej w Gliwicach

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Dobrzański L. A.

Przegląd Odlewnictwa

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2005

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tom Vol. 55, nr 4

207-213

PL

W artykule przedstawiono rys historyczny Wydziału Mechanicznego Technologicznego jako jednego z 4 najstarszych i obecnie największych Wydziałów Politechniki Śląskiej w Gliwicach. Przedstawiono strukturę organizacyjną Wydziału oraz zakres jego aktywności naukowej i dydaktycznej, a także współpacę zagraniczną. Zaprezentowano cele Światowego Kongresu "COMMENT'2005", organizowanego z okazji 60-lecia Wydziału.

EN

In the article the historical overview of the Faculty of Mechanical Engineering as one of the oldest and at present the biggest Faculties of the Silesian University of Technology in Gliwice is presented.

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Role of materials design in maintenance engineering in the context of industry 4.0 idea

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Dobrzański L. A.

Journal of Achievements in Materials and Manufacturing Engineering

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2019

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tom Vol. 96, nr 1

12--49

EN

Purpose: The paper presents the issues of designing the maintenance of materials and products in accordance with the idea of Industry 4.0. The author's views on the need for augmentation of the Industry 4.0 model were also presented, as well as the author's original concept that hybrid activities in predictive maintenance and condition-based maintenance should be preceded by designing material, maintenance & manufacturing 3MD at the stage of the product's material designing and technological designing. The 3MD approach significantly reduces the frequency of assumed actions, procedures and resources necessary to remain the condition of this product for the longest possible time, enabling it to perform the designed working functions. Examples of own advanced research on several selected, newly developed materials, used in very different areas of application, confirmed the validity of the scientific hypothesis and the relationship between the studied phenomena and structural effects and the working functions of products and their maintenance and indicated that material design is one of the most important elements guaranteeing progress production at the stage of Industry 4.0 of the industrial revolution. Design/methodology/approach: The author's considerations are based on an extensive literature study and the results of the author's previous study and empirical work. Each of the examples given required the use of a full set of research methods available to modern material engineering, including HRTEM high-resolution transmission electron microscopy. Findings: The most interesting intellectual achievements contained in the paper include presentations of the author's original concepts regarding the augmentation of the Industry 4.0 model, which has been distributed so far, which not only requires augmentation but is actually only one of the 4 elements of the technology platform of the extended holistic model of current industrial development, concerning cyber-IT production aided system. The author also presents his own concept for designing material, maintenance and manufacturing 3MD already at the stage of material and technological design of the product, eliminating many problems related to product maintenance, even before they are manufactured and put into exploitation. Detailed results of detailed structural researches of several selected avant-garde engineering materials and discussion of structural changes that accompanying their manufacturing and/or processing are also included. Originality/value: The originality of the paper is associated with the novelty of the approach to analysing maintenance problems of materials and products, taking into account the requirements of the contemporary stage of Industry 4.0 development. The value of the paper is mainly associated with the presentation of original issues referred to as findings, including the concept of augmentation of the Industry 4.0 model and the introduction and experimental confirmation of the idea by designing material, maintenance and manufacturing 3MD.

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Projektowanie materiałowe jako podstawowy cel inżynierii materiałowej

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Dobrzański L. A.

Rudy i Metale Nieżelazne

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2005

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tom R. 50, nr 6

296-311

PL

Artykuł dotyczy roli projektowania materiałowego w projektowaniu inżynierskim produktów i procesów ich wytwarzania. Przedstawiono znaczenie rozwoju materiałów inżynierskich dla postępu cywilizacyjnego na przestrzeni dziejów oraz światowe tendencje rozwojowe nauki o materiałach i inżynierii materiałowej w pierwszych dziesięcioleciach XXI wieku. Szczególną uwagę zwrócono na interdyscyplinarny charakter omawianej dyscypliny nauki oraz przedstawiono zakres jej zainteresowań. Podstawowym celem nauki o materiałach i inżynierii materiałowej jest dobór materiałów zapewniających wymagane funkcje i własności użytkowe wytwarzanych z nich produktów. Wyznaczono zadania tej dyscypliny nauki w priorytetowych sferach rozwoju światowego, do których zaliczono poprawę warunków życia, system ochrony zdrowia, komunikację i przesył informacji, rozwój dobór konsumpcyjnych oraz transport. Wśród kierunków działań nauki o materiałach i inżynierii materiałowej, zapewniających osiągnięcie celów strategicznych rozwoju społeczeństw wymieniono projektowanie materiałowe, komputerową naukę o materiałach, rozwinięte techniki analityczne, wytwarzanie i przetwórstwo, nanomateriały oraz materiały inteligentne i biomimetyczne. Porównano również podstawowe własności różnych grup materiałów inżynierskich z materiałami metalowymi, jak również przeanalizowano koszty materiałów i wytwarzanych z nich produktów. W podsumowaniu wskazano na znaczenie nauki o materiałach i inżynierii materiałowej oraz projektowania materiałowego w osiąganiu nowoczesnego postępu technologicznego i zapewnieniu dobrobytu społeczeństw w przyszłości.

EN

The paper deals with the role of materials selection for engineering design of products and their manufacturing processes. The significance of engineering materials development for the civilization progress during centuries and world developmental tendencies of materials science and engineering in the first decades of the 21 st century are presented. The special attention is taken to the interdisciplinary character of science and its area of interest are described. The fundamental aim of materials science and engineering is materials selection ensuring required functions and application properties of products which are manufactured out of them. The tasks of that field of science in priority spheres of the world development including the improvement of life conditions, health protection system, communication and information delivery, the development of consumer goods and transport are determined. Among the directions ofactivities ofmaterials science and engineering ensuring the achievements of strategic aims of the developments of societies, materials design, computational materials science, advanced analytical methods, manufacturing and processing, nano-, smart and biomimetic materials have been pointed out. Moreover, the fundamental properties of various engineering materials have been compared with metal materials, and also costs of materials and products made of them have been analysed. In conclusions the significance of materials science and engineering and materials design in the achievement of modern technological development and assurance of society prosperity in the future have been pointed out.

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Charakterystyka powłok ochronnych naniesionych na materiałach kompozytowych magnetycznie twardych Nd-Fe-B o osnowie polimerowej

63%

Drak M. , Dobrzański L. A.

Zeszyty Naukowe Politechniki Świętokrzyskiej. Mechanika

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2005

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tom Z. 82

83-88

PL

W artykule przedstawiono charakterystykę ochronnych powłok polimerowych, lakierowych i metalowych, naniesionych na podłoże z materiału kompozytowego magnetycznie twardego o osnowie polimerowej , wzmacnianego cząstkami Nd-Fe-B z dodatkami proszków metalowych. Strukturę powłok zbadano metodą skaningowej mikroskopii elektronowej. Wykonano także badania twardości, grubości i przyczepności naniesionych powłok.

EN

The paper presents the characterization of protective polymer, varnish and metallic coating deposited onto polymer matrix hard magnetic composite materials reinfoced with Nd-Fe-B particles with metal additions. Structure of coatings was observed in scanning electron microscopy. Thickness, hardness and adhesive of deposited coatings was evaluated.

16

Deposition conditions effect on physical properties and surface topography fractal dimension of the Ti+Ti(CxN1-x) coatings obtained in the PVD process

63%

Kwaśny W. , Dobrzański L. A.

Inżynieria Materiałowa

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2004

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tom R. XXV, nr 3

607-610

EN

The paper presents investigation results of the effect of deposition parameters on structure and mechanical properties of the Ti+Ti(CxN1-x) coatings obtained by magnetron sputtering in the vacuum furnace onto the ASP 30 sintered high speed steel. Effect of sputtering parameters on chemical and phase compositions, thickness and micro-hardness were evaluated. The characteristic structure and surface topography of the analyzed coatings are presented the fractal character of the surface topography was confirmed.

PL

W pracy przedstawiono wyniki badań wpływu parametrów pokrywania na strukturę i własności mechaniczne powłok Ti+Ti(CxN1-x) uzyskanych przez rozpylanie magnetronowe w piecu próżniowym na podłożu ze spiekanej stali szybkotnącej typu ASP 30. Oceniono wpływ parametrów rozpylania na skład chemiczny i fazowy, grubość oraz mikrotwardość analizowanych powłok. Przedstawiono charakterystyczną strukturę oraz topografię powierzchni analizowanych powłok oraz wykazano jej fraktalny charakter.

17

Structure and properties of the wear resistant coatings obtained in the PVD and CVD processes on tool ceramics

63%

Dobrzański L. A. , Pakuła D.

Inżynieria Materiałowa

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2004

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tom R. XXV, nr 3

568-571

EN

The paper presents investigation results of structure and functional properties of the hard wear resistant coatings obtained in the PVD and CVD processes on the Si3N4 nitride tool ceramics. Examinations of coatings structures were made on the scanning electron microscope (SEM), microhardness tests, coating adhesion to the substrate with the ,,scratch test", and the coatings abrasive resistance ,,pin-on-disc" test. Machining tests results and roughness tests results for the machined grey cast iron surface are also presented. The research carried out proved that depositing the hard, anti wear, multilayer coatings based on the Al2O3 and TiN layers onto the Si3N4 nitride tool ceramics with the PVD method results in obtaining better functional properties like extension of the cutting tool life, than in case of the uncoated nitride ceramics or coated with the PVD coatings and some CVD ones.

PL

W pracy przedstawiono wyniki badań struktury i własności użytkowych twardych przeciwzużyciowych powłok otrzymanych w procesach PVD i CVD na narzędziowej ceramice azotkowej Si3N4. Wykonano badania struktury powłok w skaningowym mikroskopie elektronowym (SEM), badania mikrotwardości, przyczepności powłok do podłoża metodą "scratch test" oraz odporności na zużycie ścierne powłok metodą "pin on disc". Przedstawiono również wyniki testów skrawania oraz wyniki chropowatości obrobionej powierzchni żeliwa szarego. W wyniku przeprowadzonych badań wykazano, że nanoszenie na powierzchnię badanej azotkowej ceramiki narzędziowej Si3N4 metodą CVD twardych, przeciwzużyciowych, wielowarstwowych powłok bazujących na warstwach Al2O3 i TiN powoduje uzyskanie lepszych własności użytkowych, określonych przez wydłużenie okresu trwałości ostrza skrawającego, od własności użytkowych ceramiki azotkowej niepokrywanej oraz pokrytej powłokami PVD i wybranymi powłokami CVD.

18

Employment of neural networks for analysis of chemical composition and cooling rate effect on CCT diagrams shape

63%

Dobrzański L. A. , Trzaska J.

Inżynieria Materiałowa

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2004

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tom R. XXV, nr 3

472-475

EN

The paper presents possibility of employment of the original supercooled austenite transformation anisothermic diagrams forecasting method for analysis of the chemical composition effect on the CCT diagrams shape. The developed model makes it possible to substitute computer simulation for the costly and time consuming experiments. The information derived from calculations make it possible to plot diagrams illustrating the effects of the particular elements or pairs of elements, as well as cooling rate and/or austenitizing temperature, on any temperature or time describing transformations in steel during its continuous cooling. Evaluation is also possible of the effect of the aforementioned factors on hardness and fractions of the particular structural constituents.

PL

W pracy przedstawiono możliwość zastosowania oryginalnej metody prognozowania anizotermicznych wykresów przemian austenitu przechłodzonego do analizy wpływu składu chemicznego na postać krzywych CTPc. Opracowany model pozwala na zastąpienie kosztownych i czasochłonnych eksperymentów przez symulację komputerową. Uzyskane w wyniku obliczeń informacje pozwalają na sporządzenie wykresów ilustrujących wpływ pojedynczych pierwiastków lub par pierwiastków stopowych a także szybkości chłodzenia i/lub temperatury austenityzowania na dowolną temperaturę lub czas opisujące przemiany w stali podczas chłodzenia ciągłego. Możliwa jest również ocena wpływu wspomnianych czynników na twardość i udział poszczególnych składników strukturalnych.

19

Laserowe teksturowanie powierzchni krzemu polikrystalicznego

63%

Dobrzański L. A. , Drygała A.

Elektronika : konstrukcje, technologie, zastosowania

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2010

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tom Vol. 51, nr 5

57-59

PL

W pracy przedstawiono dobór warunków laserowej obróbki powierzchni krzemu polikrystalicznego zastosowanej w celu zmniejszenia współczynnika odbicia promieniowania słonecznego.

EN

The paper presents results on selection of laser processing parameters of polycrystalline silicon surface for reduction of the light reflection losses.

20

Wpływ stopowania laserem diodowym na własności i strukturę warstwy wierzchniej stali narzędziowej do pracy na gorąco

63%

Dobrzański L. A. , Jonda E.

Inżynieria Materiałowa

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2013

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tom Vol. 34, nr 6

665--668

PL

W artykule przedstawiono wyniki badań wpływu warunków obróbki laserowej, w tym mocy lasera oraz dodatków stopowych zawartych w wybranych proszkach węglików, na strukturę i własności warstwy wierzchniej stali stopowej narzędziowej do pracy na gorąco X40CrMoV5-1. Obróbkę wykonano za pomocą lasera diodowego dużej mocy. W opracowaniu zaprezentowano wyniki badań własnych wykonanych na próbkach ze stali narzędziowej stopowej do pracy na gorąco X40CrMoV5-1 poddanych konwencjonalnej obróbce cieplnej, a następnie przetapianych lub stopowanych laserowo w zakresie mocy lasera 1,2÷2,3 kW z udziałem proszków węglików. Celem wykonanych badań było sprawdzenie, czy w wyniku wprowadzenia do warstwy wierzchniej badanej stali pierwiastków pochodzących z rozpuszczających się proszków węglików jest możliwa poprawa własności użytkowych materiału.

EN

The paper presents investigations results of the laser treatment influence including laser power, and the alloying elements of selected carbide powders on the structure and properties of surface layer of remelted or alloyed hot work steel X40CrMoV5-1 prepared by high power diode laser. In the study, the results of researches carried out on the samples from alloyed hot work tool steel X40CrMoV5-1 subjected conventional heat treatment and then laser remelted and laser alloyed with carbides powder in the 1.2÷2.3 kW power range of laser are presented. The purpose of investigations was to test whether the introduction addition to the surface layer of the investigated steel of elements from dissolving carbides powders with improve useful properties of investigated material.