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    Wyświetlanie 1-15 z 15
    Tytuł:
    Evaluation of the possibility of phytostabilization of post-flotation tailing ponds
    Autorzy:
    Krawczyńska, M.
    Kołwzan, B.
    Gediga, K.
    Dziubek, A. M.
    Grabas, K.
    Karpenko, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/208065.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    seeds
    copper
    flotation
    ore tailings
    ores
    sugar industry
    trace elements
    biosurfactant
    flotation tailings
    seed treatment
    phytostabilization
    nasienie
    miedź
    flotacja
    rudy
    przemysł cukrowniczy
    mikroelementy
    ekstrakty wodne
    odpady poflotacyjne
    nawożenie organiczne
    fitostabilizacja
    zaprawianie nasion
    Opis:
    The effect of organic fertilization and microbiological preparations for phytostabilization of copper ore tailings were examined. It has been shown that the introduction of the pulp, waste from the sugar industry, leads to the mobilization of trace metals. The copper content in aqueous extract of enriched waste was greater than 500-fold higher than in controls. It has also been stated an increase in the toxicity of extracts. While the use of biopreparations for seed treatment contributed to the stimulation of nutrients uptake by plants. In the biomass of plants from treated seeds with a suspension of Azotobacter strain EK, and biosurfactant was found more phosphorus and calcium than in plants from control.
    Źródło:
    Environment Protection Engineering; 2015, 41, 1; 157-167
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methods of measurement of cylindrical gear air, gear with standard software CMM
    Autorzy:
    Budzik, G
    Dziubek, T.
    Kozik, B
    Zaborniak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/245478.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    gear
    cylindrical gear
    aircraft gearbox
    coordinates measuring technique
    Opis:
    Air gears must meet high performance criteria for accuracy; therefore, quality control is necessary for their production. CMM Software determines the capabilities and scope of the measuring machines. Measuring machines equipped with specialized software for the measurement of the gears are commercially available. An example might be a company offering Wenzel TGEAR XY software. This specialized software for the measurement of gears allows fully automatic measurement of the contour deviation (involute), line tooth pitch, and radial run out, tooth flank topography. If you do not have a special software to measure the gear, you require a measurement process based on 3D CAD model of the gear. It is necessary in this case, the preparation of a strategy based on measurements of 3D CAD model and load points or paths with the CAD model. The results of the measurement refer to the CAD model treating it as the nominal model. Item will present the methodology of measurement of cylindrical gears using a standard CMM software. Cylindrical gears can be measured through non-contacting or contacting methods – measuring point or scanning. The choice of measurement method should be carried out taking into account the accuracy of gear and taking into account the capabilities of the system and measurement needs. An important advantage of the measurement using the gears multipurpose measuring software is that it is possible to measure any geometry of the wheels in relation to the CAD model. Using this measurement strategy avoids the need to purchase additional software, the measuring machine and its setup. You should only choose a method of analysis that will be carried out directly in the environment-measuring machine, or will be made in the CAD system based on the geometry acquired during the measurement with respect to the virtual model. In the second case, export is needed in the appropriate format measurement data to CAD software.
    Źródło:
    Journal of KONES; 2014, 21, 1; 37-42
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nanocomposites with polyhedral oligomeric silsesquioxane nanofillers – characterization of morphology, thermal and mechanical properties
    Autorzy:
    Niemczyk, A.
    Dziubek, K.
    Korach, Ł.
    Grzymek, M.
    Dutkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/105896.pdf
    Data publikacji:
    2016
    Wydawca:
    Centrum Badań i Innowacji Pro-Akademia
    Tematy:
    nanocomposites
    polyethylene
    silsesquioxanes
    nanokompozyty
    polietylen
    silseskwioksany
    Opis:
    High-density polyethylene nanocomposites with hydroxy-hepta(iso-butyl)-octasilsesquioxane (POSS-(i-Bu)7OH) and hydroxy-hepta(iso-octyl)-octasilsesquioxane (POSS-(i-Oct)7OH) as nanofillers were prepared by melt blending. The morphological, thermal and mechanical properties as well as processability of obtained nanocomposites were characterized. POSS nanofillers were homogenously dispersed in polymeric matrix. High compatibility between nanofiller and polymer induced enhanced thermal stability, Charpy impact strength and melt flow rate for composite materials. POSS particles acted also as a nucleating agent for polyethylene crystallization in the nanocomposite.
    Źródło:
    Acta Innovations; 2016, 21; 5-12
    2300-5599
    Pojawia się w:
    Acta Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality control and inspection of bevel gears of the aircraft gearbox utilizing the ATOS 3D scanner
    Autorzy:
    Marciniec, A.
    Budzik, G.
    Dziubek, T.
    Grzelka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/248064.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    bevel gears
    3D scanning
    quality control
    Opis:
    Quality control gears o aircraft gearbox has become a key component in today's manufacturing process. Optical 3D scanning, based on the principle of fringe projection, has proven to be both an accurate and cost-effective alternative delivering more dimensional information to aid in quality control and process optimization by creating more meaningful measuring reports. The ATOS 3D BLUE LIGHT optical scanner has a unique capability of being user-configurable to address various measuring requirements. This is accomplished via the user’s ability to change measuring volumes in minutes, in order to increase scan data resolution or increase the measuring field of view. The paper present the opportunity to automate the measurement process of bevel gears, using coordinated optical scanner ATOS 3D "white light" version and "blue light" version. Using coordinate measuring technique, you can specify a set of methods and procedures for the designation of the complex dimensions of physical objects and transform them into a computer program space of coordinate measuring devices. The topics included in the article are intended to show the capabilities of the device used to improve the measurement process and shorten its time, and hence, lower its costs in both version of ATOS Scanner. Another thing described in the paper is the impact of measurement performance in automatic mode on the quality of performance - the numerical image of scanned surface, from the standpoint of accuracy and number of collected data points in the shortest time. The article includes an analysis of conditions related to the measurement works, such as the process of preparing the model and measurement equipment and data processing capacity.
    Źródło:
    Journal of KONES; 2012, 19, 1; 261-266
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rapid Prototyping of wax foundry models in an incremental process
    Szybkie prototypowanie woskowych modeli odlewniczych w procesie przyrostowym
    Autorzy:
    Kozik, B.
    Budzik, G.
    Dziubek, T.
    Grzelka, M.
    Tutak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380752.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rapid prototyping
    wax models
    model 3D-CAD
    prototypowanie szybkie
    model woskowy
    Opis:
    The paper presents an analysis incremental methods of creating wax founding models. There are two methods of Rapid Prototyping of wax models in an incremental process which are more and more often used in industrial practice and in scientific research. Applying Rapid Prototyping methods in the process of making casts allows for acceleration of work on preparing prototypes. It is especially important in case of element having complicated shapes. The time of making a wax model depending on the size and the applied RP method may vary from several to a few dozen hours.
    Artykuł przedstawia analizę przyrostowych metod wytwarzania woskowych modeli odlewniczych. W praktyce przemysłowej i badaniach naukowych stosuje się coraz częściej metody szybkiego prototypowania modeli woskowych w procesie przyrostowym. Zastosowanie metod RP w procesie wytwarzania odlewów pozwala na przyspieszenie prac nad przygotowaniem prototypów. Jest to szczególnie ważne w przypadku elementów o skomplikowanych kształtach. Czas wykonania modelu woskowego w zależności od gabarytów i zastosowanej metody Rapid Prototyping może wynieść od kilku do kilkudziesięciu godzin.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 2 spec.; 113-116
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methodology of measurement aeronautical bevel gears using an optical scanner ATOS II Triple Scan
    Autorzy:
    Marciniec, A.
    Budzik, G.
    Dziubek, T.
    Sobolewski, B.
    Zaborniak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/247458.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    bevel gear
    aircraft gearbox
    optical scanner
    coordinates measuring technique
    Opis:
    Properly prepared and carried out the measurement process of bevel gears determines its accuracy and productivity. This also has an influence on the final accuracy of bevel gears and the production costs of aeronautical gearbox. In the process of assessing the accuracy of manufacturing, majority of manufacturers of bevel gears use specialized contact coordinate measuring machines. The application of such machines as well as specialized programs dedicated to measuring the geometry of bevel gears are authoritative but in turns this requires substantial financial resources for the purchase of machinery. Thereby, this causes the limitation only of the gear assortment. Therefore, this article depicts different perspective on measurements of bevel gears using a universal measuring device, which is an optical 3D scanner ATOSII Triple Scan. Due to the use of the optical scanner ATOS II Triple Scan in measurement process, it was necessary to develop a methodology dealing with the process of assessing and accuracy, in order to achieve the desired results of measurement. This need arises from the fact that the optical scanner ATOS is not dedicated, specialized device for measuring gears. Despite of this fact, maintaining the appropriate measurement procedures and a proper preparation of the measured model allows for rapid and accurate assessment of the accuracy ofproduction. The article presents the analysis of conditions and developed rules concerning the preparation of a model for measurement. It also contains hints and a description of the measurement process. Furthermore, it depicts the rules specifying the interpretation of measurement results as well as the technical rules of their realization.
    Źródło:
    Journal of KONES; 2014, 21, 2; 201-208
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of precision of making elements for aeronautical dual - power path gear demonstrator applying venture baty coordinate measuring machine
    Autorzy:
    Kozik, B.
    Budzik, G.
    Markowski, T.
    Dziubek, T.
    Grzelka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/247833.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    analysis of precision
    coordinated measuring machine
    dual-power path gear
    demonstrator
    Opis:
    The paper presents the process of measuring and analysing precision of making toothed wheels for a demonstrator of aeronautical dual-power path gear by means of FDM [2]. A coordinate measuring machine VENTURE BATY has been used in the research. The capabilities of the presented optical measuring machine make it possible to measure spur gears with different modules including small ones (m less than1)which is a great advantage of this kind of measuring equipment. Analysing precision of making elements of gears is one of more important stages in creating them [6]. However, it is necessary to remember that the controlling stage should be carried out in accordance with standards concerning measuring toothed wheels defining this activity. The measuring method presented in the paper and the outcome of measurements allowed for designing a demonstrator of dual-power path gear intended for stand tests. The correct operation of a gear is assured by proper choice of constructional parameters of cooperating wheels taking into account materials used in FDM technology. The optical machine BATY is equipped with FUSION software used while measuring and analysing precision and it allows for data processing and exchanging the data with other programming environments. It is, however, restricted by one data exchange format - DXF. With regard to 2D measurement specific character, the machine does not make it possible to control tooth outline and as a consequence, it is possible to measure only gears with straight teeth. On the other hand, the advantage of the above is the possibility of comparing the measurement to CAD-2D model, which makes it possible to analyse the precision of wheels with non-standard profiles (other than envolute ones).
    Źródło:
    Journal of KONES; 2012, 19, 2; 253-257
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determine the precision of aviation bevel gear, made by the selected incremental techniques and using an optical scanner Atos II Triple Scan
    Określenie dokładności kół zębatych lotniczej przekładni stożkowej wykonanych wybranymi metodami przyrostowymi z zastosowaniem optycznego skanera Atos II Triple Scan
    Autorzy:
    Marciniec, A.
    Budzik, G.
    Dziubek, T.
    Sobolewski, B.
    Zaborniak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1396904.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    CAD model
    simulation cutting
    rapid prototyping
    optical measuring
    model CAD
    symulacja obróbki
    szybkie prototypowanie
    pomiary optyczne
    Opis:
    Designing and manufacturing of aeronautic bevel gearbox is a complicated and time-consuming process due to complex kinematics of the machining process and numbers of manufacturing methods. Algorithms used in manufacture process are usually provided by machine manufacturers. Using other and commonly available calculation algorithms requires a lot of studies to verify whether the proposed gearbox works correctly. In order to reduce the manufacturing costs of prototypes, it is possible to use Rapid Prototyping methods. Using coordinate optical measurements enables to determine the accuracy of prototypes manufactured by selected methods using and introduce such changes in the model to get the best accuracy of mapping models. Increasing the accuracy of the models enables to verify the correctness of assumptions made in the initial stage of product designing. This approach reduces significantly both prototyping time and manufacturing costs. The article presents the model ling and manufacturing process of aeronautic bevel gear taking into consideration the accuracy of selected Rapid Prototyping methods. The gear modeling is based on machining simulation method conducted in Autodesk Inventor software. The measurement results are shown in displacement maps obtained with an optical scanner Atos II Triple Scan and universal GOM Inspect Professional software, which determines the prototype accuracy in relation to 3D-CAD models.
    Projektowanie oraz wytwarzanie lotniczych przekładni stożkowych jest skomplikowanym i czasochłonnym procesem ze względu na złożoną kinematykę procesu obróbki oraz ze względu na liczne metody wytwarzania. W procesie produkcji stosowane są zazwyczaj algorytmy dostarczane przez producentów obrabiarek. Wymaga to znacznych nakładów finansowych, a w efekcie podnosi koszty wykonania wyrobu. Zastosowanie innego ogólnie dostępnego algorytmu obliczeniowego wymaga przeprowadzenia szeregu badani mających na celu weryfikacje poprawności pracy projektowanej przekładni. W celu ograniczenia kosztów związanych z wytwarzaniem prototypów metodami ubytkowymi możliwe jest wykonanie prototypów metodami przyrostowymi. Dzięki zastosowaniu współrzędnościowych pomiarów optycznych możliwe jest określenie dokładności otrzymywanych wybranymi metodami prototypów i wprowadzenie takich zmian w modelu aby uzyskać jak najlepsza dokładność odwzorowania modeli. Podniesienie dokładność modeli umożliwia ich wykorzystanie do weryfikacji poprawności poczynionych założeń konstrukcyjnych w początkowym etapie powstawania wyrobu. Podejście takie skutkuje znacznym skróceniem czasu prototypowania oraz obniżeniem kosztów produkcji. Artykuł przedstawiał będzie proces modelowania i wytwarzania stożkowych kół zębatych stożkowej przekładni lotniczej, z uwzględnieniem dokładności wybranych metod RP. W modelowaniu kół zębatych wykorzystana zostanie metoda symulacji obróbki prowadzona w środowisku oprogramowania Autodesk Inventor. Przedstawione zostaną wyniki pomiarów w postaci map odchyłek uzyskane z zastosowaniem optycznego skanera Atos II Triple Scan oraz uniwersalnego oprogramowania GOM Inspect Professional, określające dokładność prototypów w odniesieniu do wzorców 3D-CAD.
    Źródło:
    Diagnostyka; 2015, 16, 1; 63-67
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Analysis of the Accuracy of Wax Casting Models for Medical Applications
    Autorzy:
    Markowska, O.
    Budzik, G.
    Grzelka, M.
    Dziubek, T.
    Cader, M.
    Turek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/380915.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innovative foundry materials
    innovative Foundry Technologies
    reverse engineering
    rapid prototyping
    vacuum casting
    measuring systems
    innowacyjne materiały odlewnicze
    innowacyjne technologie odlewnicze
    odlewanie próżniowe
    systemy pomiarowe
    Opis:
    The article presents an analysis of the dimensional accuracy of wax models, made by Vacuum Casting Method (VC), used in the manufacturing process of bone defects implants of the skull vault. Silicone molds were made on the basis of Rapid Prototypes (RP) models. The RP prototypes were created from 3D-CAD (CATIA V5) developed during studies of the shape of the cranial vault bone defects. The technology used in the RP process was stereolithography (SLA). During the researches also were used an additional tested models. These models were designed on the basis of the dome with cutouts of different shapes. The measurement process was conducted by optical coordinate measuring system. The research was carried out using an Atos Triple Scan scanner. The analysis presents that there is a possibility of using the technology of Vacuum Casting wax models in silicon molds, as the indirect method in the process of implementation of the implant-bone of the skull cap.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 77-82
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The determination of accuracy of the demonstrator of aeronautic bevel gearbox, accomplished by selected rapid prototyping techniques using an optical scanner Atos II Triple Scan
    Autorzy:
    Marciniec, A.
    Budzik, G.
    Dziubek, T.
    Sobolewski, B.
    Zaborniak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/247540.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    bevel gear
    aircraft gearbox
    optical scanner
    coordinate measuring technique
    rapid prototyping
    gear modelling
    Opis:
    Designing and manufacturing of aeronautic bevel gearboxes is a complicated and time-consuming process because of complex kinematics of the machining process as well as numbers of manufacturing methods. Machine manufacturers usually provide algorithms used in manufacture process. This requires substantial financial resources and, in consequence, it increases the costs of production. Using other commonly available calculation algorithm requires a lot of studies to verify whether the proposed gearbox works correctly. In order to reduce the manufacturing costs of prototypes, it is possible to use Rapid Prototyping methods. Using both Rapid Prototyping techniques and coordinate optical measurements enables to verify the correctness of assumptions made in the initial stage of product designing. This approach reduces significantly both prototyping time and manufacturing costs. In order to ensure the effectiveness of prototyping process, it is essential to provide the accuracy of manufactured prototypes. That is the reason why it is necessary to determine manufacturing methods that will ensure the highest geometric accuracy. The study presents the modelling and manufacturing process of aeronautic bevel gear of demonstrator taking into consideration the accuracy of selected Rapid Prototyping methods. The gear modelling is based on machining simulation method conducted in Autodesk Inventor. The measurement results are shown in displacement maps obtained with an optical scanner Atos II Triple Scan and universal GOM Inspect Professional software, which determines the prototype accuracy in relation to 3D-CAD models.
    Źródło:
    Journal of KONES; 2014, 21, 3; 205-209
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of dimensional accuracy of blade of aircraft engine using a coordinate measuring machine
    Autorzy:
    Budzik, G
    Kubiak, Krzysztof
    Zaborniak, M.
    Przeszłowski, Ł.
    Dziubek, T.
    Cygan, M.
    Tutak, M.
    Matysiak, H
    Powiązania:
    https://bibliotekanauki.pl/articles/244267.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    aircraft engines turbine blades
    optical measurements
    coordinate measuring technique
    Opis:
    Technological process of aircraft engine turbine blades requires control of blade geometric parameters. Innovation technologies for measurement of aircraft engine turbine blades are based on coordinate numerical machines – measurement process is based on processing of numerical data obtained by measurement using coordinate measuring machines. The paper presents the opportunity of analysis of dimensional accuracy of aircraft engine turbine blades measurements using coordinate measuring machine (CMM). Coordinate measuring machine allows specifying full methodology for designation of complex dimensions of physical objects (blade of aircraft engine) and transforming them into a computer program space of coordinate measuring devices. Presented paper includes capabilities of device used in the study to improve the measurement process and blades geometry analysis in the technological and economical aspects. Another issue described in the paper is impact of measurement performance in automatic mode on the quality of performance – the numerical model of geometry, from the standpoint of accuracy and number of collected data points in time. Measurements using a coordinate measuring machine are among the most accurate methods of measuring. The paper includes an analysis of conditions related to the measurement works, such as the process of preparing the model, measurement equipment and data processing capacity. As the result, methodology of (CMM) measurements of aircraft engine turbine blades will be presented.
    Źródło:
    Journal of KONES; 2014, 21, 2; 33-37
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cell-mediated response in nodular and ocular forms of human toxoplasmosis
    Autorzy:
    Dziubek, Z.
    Zarnowska, H.
    Gorski, A.
    Basiak, W.
    Kajfasz, P.
    Bielawska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/838536.pdf
    Data publikacji:
    1998
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    toxoplasmosis
    cell-mediated response
    T lymphocyte
    man
    humoral response
    Źródło:
    Annals of Parasitology; 1998, 44, 3
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polypropylene/polyhedral oligomeric silsesquioxane nanocomposites – study of free volumes, crystallinity degree and mass flow rate
    Nanokompozyty polipropylen/poliedryczne oligomeryczne silseskwioksany – badania objętości swobodnych, stopnia krystaliczności oraz masowego wskaźnika szybkości płynięcia
    Autorzy:
    Niemczyk, A.
    Dziubek, K.
    Czaja, K.
    Szatanik, R.
    Szołyga, M.
    Dutkiewicz, M.
    Marciniec, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/947285.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    nanocomposites
    polypropylene
    polyhedral oligomeric silsesquioxanes (POSS)
    positron annihilation lifetime spectroscopy (PALS)
    crystallinity degree
    mass flow rate
    polipropylen
    poliedryczne oligomeryczne silseskwioksany (POSS)
    spektroskopia czasów życia pozytonów (PALS)
    stopień krystaliczności
    masowy wskaźnik szybkości płynięcia
    nanokompozyty
    Opis:
    Polypropylene/polyhedral oligomeric silsesquioxane (PP/POSS) nanocomposites were prepared by the melt blending method. Positron Annihilation Lifetime Spectroscopy (PALS) was used to study the effects of the structure and of the amount of POSS on the free volumes in PP. The PALS parameters: o-Ps lifetime and its intensity, were compared to the crystallinity degree and to the mass flow rate (MFR) of nanocomposites. The presence of POSS nanofillers affected the PP microstructure and the size and number of free volumes in the polymer. The crystallinity degree was decreased and the intensity of o-Ps component was increased by increasing POSS contents. The MFR values increased for nanocomposites, thus POSS nanoparticles can act as plasticizers and generate more free volumes in PP.
    Nanokompozyty polipropylen/poliedryczne oligomeryczne silseskwioksany (PP/POSS) przygotowano metodą mieszania w stanie stopionym polimeru. Wpływ struktury oraz ilości zastosowanych nanonapełniaczy POSS na objętości swobodne w polipropylenie określono z zastosowaniem spektroskopii czasów życia pozytonów (PALS). Ustalono zależności pomiędzy parametrami PALS: czasem życia o-Ps (τ3) inatężeniem (I3) składowej o-Ps oraz wartościami stopnia krystaliczności (Xc) i masowego wskaźnika szybkości płynięcia (MFR) badanych materiałów. Obecność nanonapełniaczy POSS wpłynęła na liczbę i rozmiary objętości swobodnych w polimerze, co spowodowało zmianę mikrostruktury osnowy polipropylenowej. Wraz ze zwiększaniem zawartości napełniaczy POSS zmniejszał się stopień krystaliczności kompozytów, zwiększało natężenie składowej o-Ps, adodatkowo wzrastała wartość MFR – nanocząstki POSS pełniły w układzie rolę plastyfikatorów.
    Źródło:
    Polimery; 2016, 61, 9; 610-615
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical measurement of aircraft engine turbine blades
    Autorzy:
    Budzik, G.
    Kubiak, K.
    Rokicki, P.
    Dziubek, T.
    Nowotnik, A.
    Matysiak, H.
    Cygan, R.
    Tutak, M.
    Boś, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/247470.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    aircraft engines turbine blades
    optical measurements
    coordinate measuring technique
    Opis:
    Manufacturing of aircraft engine turbine blades requires control of blade geometric parameters at different stages of technological process. Acceleration and automation of measurement process can affect the duration of the finished item production. Modern technologies for measurement of aircraft engine turbine blades are based on numerical machines - measurement process is based on processing of numerical data obtained by measurement using coordinate measuring machines. The paper presents the opportunity of automation of aircraft engine turbine blades measurements using scanner ATOS II Triple Scan with blue light source technology. Coordinate measuring technique allows to specify full methodology for designation of complex dimensions of physical objects and transform them into a computer program space of coordinate measuring devices. Presented paper includes capabilities of device used in the study to improve the measurement process in the technological and economical aspects. Another issue described in the paper is impact of measurement performance in automatic mode on the quality of performance – the numerical model of surface, from the standpoint of accuracy and number of collected data points in time. The paper includes an analysis of conditions related to the measurement works, such as the process of preparing the model, measurement equipment and data processing capacity. As the result methodology for automated scanning measurements of aircraft engine turbine blades will be presented.
    Źródło:
    Journal of KONES; 2013, 20, 2; 21-26
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Application of VoxelJet Technology to the Rapid Prototyping Gear Cast
    Autorzy:
    Budzik, G.
    Markowski, T.
    Kozik, B.
    Przeszłowski, Ł.
    Rzucidło, A.
    Markowska, O.
    Zaborniak, M.
    Dziubek, T.
    Bernaczek, J.
    Turek, P.
    Traciak, J.
    Cader, M.
    Tutak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380024.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rapid prototyping method
    VoxelJet technology
    casting
    rapid tooling
    szybkie prototypowanie
    technologia VoxelJet
    odlewy
    Opis:
    The article presents the scope of application of incremental Rapid Prototyping/Rapid Tooling (RP/RT) – VoxelJet methods to the process of manufacturing casting moulds and casts of gear. The additive Rapid Prototyping methods (SL, FDM, 3DP, JS) are predominantly used for the production of models and model sets for casting moulds. The Rapid Tooling methods, such as: VoxelJet, ZCast-3DP and ProMetalRCT, enable the fabrication of casting moulds in the incremental process. The application of the RP/RT methods in cast production makes it possible to speed up the prototype preparation process. This is particularly vital with elements of complex shapes. The time required for the manufacture of the model, the mould and the cast proper may vary from a few to several dozen hours.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 87-90
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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