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1
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Bulletin of the Polish Academy of Sciences. Technical Sciences
EN The aim of the present paper was to demonstrate that a quantitative description of the microstructure of an advanced ceramic material can be efficiently obtained using modern computer-aided methods. Such a description is necessary for realistic modelling of properties and perhaps may lead to improve[...]
2
80%
Advances in Materials Science
EN Titanium as well as carbon based biomaterials, seem to be good candidates for future blood-contact applications. Bio-materials such as: Ti, Ti+DLC, TiN; Ti(C,N) with higher carbon concentration and DLC (diamond like carbon) were under examinations. Trials on surface modification of PU (polyurethane)[...]
3
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Aparatura Badawcza i Dydaktyczna
2008 T. 13, nr 4 47--53
PL W pracy dokonano oceny wpływu dwóch rodzajów noży: ryflowanych zwykłych, na mikrostrukturę wędlin drobno rozdrobnionych. Ocenę dyspersji cząstek tłuszczu i włókien kolagenowych w wędlinach przeprowadzono z zastosowaniem metod histochemicznych i komputerowej analizy obrazu. Komputerowa analiza obrazu[...]
EN In the paper, the effect of two types of knives: riffled and traditional, on the microstructure of finely comminuted sausages was investigated. Dispersion of fat globules and fibre in sausages was assessed using histochemical and computer image analysis methods. Computer image analysis showed that f[...]
4
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Journal of Theoretical and Applied Mechanics
2002 Vol. 40 nr 1 205-234
PL Celem pracy jest zbadanie wpływu nielokalności na fizyczne i materialne równania pola ośrodków heterogenicznych. Biorąc pod uwagę, że plastyczna deformacja w metalach lub zniszczenie w kruchych i ciągliwych materiałach rządzone są przez fizyczne mechanizmy na różnych poziomach skali, wprowadzono 6-w[...]
EN The aim of this paper is to investigate the influence of nonlocality on the physical and material field equations of heterogeneous media. Taking into account that plastic deformations in metals or damage in brittle and ductile materials are governed by physical mechanisms observed on levels with dif[...]
5
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Journal of Polish CIMAC
2012 Vol. 7, no 3 369-372
EN Zirconium dioxide is a material which, over the recent years, has been attracting support among dental technicians and dentists, thanks to its chemical composition and mechanical properties, it can replace nonanaesthetic foundations or metal crowns. Additionally zirconium dioxide is a material which[...]
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Zeszyty Naukowe. Mechanika / Politechnika Opolska
2011 z. 99 14-14
EN Low-carbon Cr-Ni-V steel specimens were austenitized at 810°C to 960°C for 30 min followed by isothermal quenching into a salt bath at the temperature range of 300–360 °C for different time (60, 90 and 120 min) to obtain structures with ferrite and various bainite morphologies. SEM studies showed th[...]
7
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Journal of Theoretical and Applied Mechanics
1999 nr 2 255-265
PL W pracy przedstawiono metodę prowadzącą od 2D-modelu cienkich powłok o lokalnie periodycznej strukturze do uśrednionych równań o wolno zmiennych współczynnikach. Otrzymane równania opisują wpływ wielkości mikrostruktury na reakcje powłoki i są dogodne zastosowania w analizie zagadnień dynamicznych.
EN The contribution outlines a general modelling method leading from the general equations of thin shells with locally periodic structure to the averaged equations with slowly varying coefficents. The proposed model describes the effects of periodicity cell size on the overall shell response and hence [...]
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Optica Applicata
EN Selective laser patterning of thin films in a multilayer film is an emerging technology for fabrication of MEMS devices. A 775 nm Ti:sapphire laser (130 fs, 1 kHZ) was used to irradiate the thin film stacks with variations in process parameters such as feed rate and numerical aperture of objective l[...]
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Computational Methods in Science and Technology
EN The continuum-thermodynamical approach is proposed for describing mechanical and diffusive processes in bodies with microstructure. Different physical states of admixture particles in a local body structure are taken into account. Features of a stresseddeformable state are discussed on an example of[...]
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Archives of Metallurgy and Materials
PL W pracy przedstawiono stereologiczny opis mikrostruktury płytkowej na przykładzie perlitu. Dokonano kompletnej probabilistycznej interpretacji używanych powszechnie w opisie tej mikrostruktury średnich wartości odległości międzypłytkowych oraz przedstawiono zależności pomiędzy nimi. Rozważania teore[...]
EN This paper deals with the stereology of lamellar microstructures like pearlite in steels. Using a stereological model of this microstructure interpretation and relationship between a mean true of interlamellar spacing and a mean apparent or mean random of interlamellar spacing was presented. Theoret[...]
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Advances in Materials Science
EN Influence of laser treatment at cryogenic conditions on surface microstructure after cavitation test of the SUPERSTON alloy are presented in this paper. The cavitation test was performed using the rotating disc facility in IPM PAN Gdansk. The kinetics of mass loss during the cavitation process was d[...]
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Advances in Materials Science
EN The effect of the chemical composition of BA1055 bronze on the mechanical properties has been investigated. It is important problem because many ship’s sand cast propellers are made of this alloy. Properties of over one hundred melts were analyzed. The metallographic investigations were performed on[...]
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Advances in Materials Science
EN The study presents some strength parameters of structural materials, including steel grades 13HMF, P91 and P92, currently used in professional power engineering to produce pipelines, boiler super-heaters, steam tanks, steam pressure tanks and pipelines designed to operate at the temperature range up[...]
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Optica Applicata
EN The evolution of microstructure and the phase constitution of the LaFe11.0Co0.8(Si0.4Al0.6)1.2 alloy in as-cast state and after subsequent annealing at 1323 K for 10, 20, 49 days was studied. In the LaFe11.0Co0.8(Si0.4 Al0.6)1.2 alloy after arc-melting, the dominant dendritic ?-Fe phase crystallizes[...]
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Bulletin of the Polish Academy of Sciences. Technical Sciences
EN Hybryd PLD method was used for deposition high quality thin Ti, TiN, Ti(C,N) and DLC coatings. The kinetic energy of the evaporated particles was controlled by application of variation of different reactive and non reactive atmospheres during deposition. The purpose was to improve adhesion by buildi[...]
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Journal of Polish CIMAC
EN The paper has been intended to propose an objective, non-destructive method to assess a degree of overheating of gas turbine blades material. The method has been based on the opto-electronic recognition of images of blade surface layers to extract characteristics thereof for both overheated and serv[...]
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Advances in Materials Science
EN Cobalt base clad layer underwent oxidation at 650° C and 750° C and corrosion in exhaust gases. The oxidation processes were run in two different ways; isothermal oxidation for 100 hours and cyc1ic oxidation for 200 hours. Corrosion in exhaust gases were run in a cyclic way for two month and about 2[...]
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Advances in Materials Science
EN Results of laser treatment at cryogenic conditions and its influence on microstructure and corrosion resistance of the SUPER-STON alloy have been presented. The ship propellers made of copper alloy during exploit can degrade (corrosion, cavitation). One of the method of reducing the action effects o[...]
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Foundations of Civil and Environmental Engineering
2008 No. 11 113-122
EN In this paper the influence of short and long term ageing processes on polymer dispersion in the polymer modified bitumen has been analyzed. The bitumen was modified by various amounts of SBS elastomers. Microstructural changes of polymer dispersion were tested using fluorescent microscopy. It has b[...]
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Computer Methods in Materials Science
PL W obliczeniach metodą elementów skończonych często mamy do czynienia z dużymi odkształceniami siatki i wymagana jest jej aktualizacja (remeshing). Jeżeli w punktach całkowania lub w węzłach określone są parametry mikrostruktury, muszą one zostać przeniesione ze starej siatki do nowej. Stosowane są w[...]
EN Finite element computations of metal forming often involve large deformations so that the mesh degenerates and a remeshing procedure is required. When microstructural variables are attached to the nodes or integration points of the mesh, they have to be transported from the old mesh to the new one b[...]
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