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Wyszukujesz frazę "quality model" wg kryterium: Temat

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    Wyświetlanie 1-12 z 12
    Tytuł:
    Evaluation of multimedia applications in a cluster-oriented environment
    Autorzy:
    Czarnul, P.
    Dziubich, T.
    Krawczyk, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/220601.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quality measurements
    software quality
    quality model and measures
    parallel computing
    distributed middleware
    multimedia applications
    Opis:
    In the age of Information and Communication Technology (ICT), Web and the Internet have changed significantly the way applications are developed, deployed and used. One of recent trends is modern design of web-applications based on SOA. This process is based on the composition of existing web services into a single scenario from the point of view of a particular user or client. This allows IT companies to shorten the producttime to market process. On the other hand, it raises questions about the quality of the application, trade-offs between quality factors and attributes and measurements of these. Services are usually hosted and executed in an environment managed by its provider that assures the quality attributes such as availability or throughput. Therefore, in this paper an attempt has been made to perform quality measurements towards the creation of efficient, dependable and user-oriented Web applications. First, the process of designing service-based applications is described. Next, metrics for subsequent measurements of efficiency, dependability and usability of distributed applications are presented. These metrics will assess the efforts and trade-offs in a Web-based application development. As examples, we describe a pair of multimedia applications which we have developed in our department and executed in a cluster-based environment. One of them runs in the BeesyCluster middleware and the second one in the Kaskada platform. For these applications we present results of measurements and conclude about relations between quality attributes in the presented application development model. This knowledge can be used to reason about such relations for new similar applications and be used in rapid and quality development of the latter.
    Źródło:
    Metrology and Measurement Systems; 2012, 19, 2; 177-190
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of an innovative approach for complex, causally determined failure chains
    Autorzy:
    Bielefeld, O.
    Dransfeld, H.
    Schlüter, N.
    Winzer, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/407289.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    model-based failure analysis
    reliability
    quality
    safety
    Opis:
    A high number of examples in today’s global industry prove that it is difficult to ensure a certain level of quality. One possible reason is the increasing complexity of modern mechatronic product systems. Interface problems due to several involved science disciplines and the lack of understanding subsystems, which are delivered by different suppliers, make it difficult to identify critical components and specifications of elements. Furthermore, it is even harder to estimate the effects of elements because of their unknown dependencies and relations. Therefore it becomes more and more improbable to develop a safe, sustainable and high quality product right from the beginning. In order to understand failures in complex system structures today’s engineering industries need a generic approach that increases the understanding of systems, identifies critical components and considers the different levels of a system. It shall examine failures that cause system errors but also failures that limit system functions. Thus, it is necessary to model and simulate the causally failure chains and analyse over several system levels and elements with their dependencies. This leads to a better understanding of the whole picture of cause and effect. This research paper points out which requirements this new model-based approach has to fulfill and how it is possible to link quality and reliability methods to achieve an overall understanding and analysis of a complex system to assure high quality and sustainability.
    Źródło:
    Management and Production Engineering Review; 2017, 8, 3; 3-12
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An empirical examination of the relationship between capability maturity and firm performance across manufacturing and IT industries
    Autorzy:
    Hayes, Louise
    Lu, Jing
    Rezania, Davar
    Powiązania:
    https://bibliotekanauki.pl/articles/2127530.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    capability maturity
    quality management
    certification
    maturity model
    Opis:
    We investigate the effect on firm performance of the motivation for applying maturity models in manufacturing and information technology organizations. We expect the association between profitability and maturity models to be less if motivated by external contract requirements (e.g., for certain government contracts), than if motivated internally to improve pro- cesses. Using a sample of firm-year observations for 1,105 SEC registrants in the manufacturing (Standard Industry Classification (SIC): 3600∼3812) and IT industries (SIC: 7370∼7374) for 2017 and 2018, and CMMI information from the CMMI institute published appraisal results system, it is observed that 28 public firms (17 IT firm-years and 23 manufacturing firm-years) in the sample had CMMI appraisals between 2017 and 2018. We use logistic regression to test if the likelihood of CMMI appraisal is positively associated with government sales. The results support for the manufacturing industry, but not for the IT industry, prior research’s assertion that maturity is a source for competitive advantage.
    Źródło:
    Management and Production Engineering Review; 2022, 13, 2; 61--70
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A tool to measure maturity of an employee suggestion scheme
    Autorzy:
    Lasrado, F.
    Gomišček, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/407046.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quality management
    measurement
    model
    system
    Employee Suggestion Scheme
    innovation
    Opis:
    Employee Suggestion Schemes have been used in organizations for a long time due to the fact that they enable fostering of creative ability of employees. However, they must be used effectively and in a sustainable manner to better the creativity and innovation capacity of organizations in order to improve competitive advantage. Therefore there is a need to understand the maturity of Employee Suggestion Schemes. This paper proposes a new, structured evaluation tool for assessing an organizational Employee Suggestion Scheme maturity. It suggests five building blocks: Leadership and Work Environment, System Capability, System Effectiveness, Organizational Encouragement and System Barriers, each of them characterized by several relevant indicators and an assessment/grading scale in order for an organization to be able to determine the maturity level of their Employee Suggestion Scheme as: Initial stage, Development stage or Advanced stage. Organizations should apply this tool to assess the maturity level of their Employee Suggestion Scheme and draw a roadmap for its improvements.
    Źródło:
    Management and Production Engineering Review; 2015, 6, 2; 4-13
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model predictive current control method for four-leg three-level converter operating as shunt active power filter and grid connected inverter
    Autorzy:
    Antoniewicz, K.
    Rafal, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/200265.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    multilevel converter
    model predictive control
    MPC
    power quality
    konwerter
    jakość energii
    Opis:
    This paper presents model predictive control (MPC) with a finite control states set (FS) for three-level four-leg flying capacitor (FCC) converter. Principles of control method are presented and flying capacitor voltages control method is discussed. Experimental results of converter operating as a shunt active power filter (SAPF) and grid connected inverter (GCI) are shown.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 5; 601-607
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Water quality management in a treatment plant using the Box-Jenkins method
    Autorzy:
    Redondo-Peñuela, E. A.
    Rondón-Quintana, H. A.
    Zafra-Mejía, C. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/230328.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    model Box-Jenkinsa
    oczyszczalnia
    szereg czasowy
    jakość wody
    Box-Jenkins model
    treatment plant
    time series
    water quality
    Opis:
    Drinking water systems are critical to society. They protect residents from waterborne illnesses and encourage economic success of businesses by providing consistent water supplies to industries and supporting a healthy work force. This paper shows a study on water quality management in a treatment plant (TP) using the Box-Jenkins method. A comparative analysis was carried out between concentrations of water quality parameters, and Colombian legislation and guidelines established by the World Health Organization. We also studied the rainfall influence in relation to variations in water quality supplied by the TP. A correlation analysis between water quality parameters was carried out to identify management parameters during the TP operation. Results showed the usefulness of the Box-Jenkins method for analyzing the TP operation from a weekly timescale (mediumterm), and not from a daily timescale (short-term). This was probably due to significant daily variations in the management parameters of water quality in the TP. The application of a weekly moving average transformation to the daily time series of water quality parameter concentrations significantly decreased the mean absolute percentage error in the forecasts of Box-Jenkins models developed. Box-Jenkins analysis suggested an influence of the water quality parameter concentrations observed in the TP during previous weeks (between 2-3 weeks). This study was probably constituted as a medium-term planning tool in relation to atypical events or contingencies observed during the TP operation. Finally, the findings in this study will be useful for companies or designers of drinking water treatment systems to take operational decisions within the public health framework.
    Źródło:
    Archives of Civil Engineering; 2020, 66, 3; 125-137
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Marital life and family adjustment to multiple sclerosis
    Autorzy:
    Treder-Rochna, Natalia
    Powiązania:
    https://bibliotekanauki.pl/articles/2129870.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cohesion
    flexibility
    gender & family
    multiple sclerosis
    Olson Circumplex Model
    quality of marital life
    Opis:
    The functioning of a person affected with a chronic illness within a family is a complex and many-sided issue. As family members form a system reflecting a network of mutual relations, one of the members’ illness will affect all those interacting with him / her emotionally. Keeping high-quality marital relations also becomes extremely difficult. The research covered 108 families (216 person) divided into three groups.We used an interview, the FACES IV questionnaire based on the Circumplex Model by David H. Olson and Dyadic Adjustment Scale (DAS) developed by Spanier. Presence of multiple sclerosis (MS) in the family turned out to impact its functioning. The present research has found that the spouses’ gender of key importance for the family. Those families in which the woman was ill were characterized by excessive rigidity. On the other hand, where the multiple sclerosis sufferer was male, the system was overly chaotic. Based on the research, it is highly probable that the majority of families with multiple sclerosis sufferers adjust relatively well to the disease. It can be supposed that the majority of multiple sclerosis affected families have developed an adaptive mechanism that benefits the patient. Supposedly, successful coping with disease may be determined by the caregiver's gender. This does not mean, however, that such families are free from problems. The difficulties relate primarily to communication, excessive autocracy, developing their individuality and autonomy. Therapeutic support for the patient and his / her family should therefore be a vital component of the treatment process.
    Źródło:
    Polish Psychological Bulletin; 2020, 51, 2; 139-148
    0079-2993
    Pojawia się w:
    Polish Psychological Bulletin
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The assessment of the social performance of residential buildings
    Ocena socjalnych właściwości użytkowych budynków mieszkalnych
    Autorzy:
    Radziejowska, Aleksandra
    Powiązania:
    https://bibliotekanauki.pl/articles/1852296.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    budynek mieszkalny
    zrównoważoność
    metoda oceny
    model matematyczny
    wskaźnik jakości socjalnej
    residential building
    building sustainability
    assessment method
    mathematical model
    social quality index
    Opis:
    The article presents method of assessment of one of the three basic aspects of sustainable construction concerning social utility properties of residential buildings. The study was based on the recommendations of standards [1] and [2], on the basis of which the area of features characterizing the social aspect of buildings was determined. Additionally, the presented method includes criteria which are necessary for the assessment of this aspect, and which are not included in the normative guidelines. The presented method fits in with the current trend of sustainable construction. This method enables and facilitates the comparison of social utility properties in different residential buildings. It is also allows for the classification of buildings according to the degree to which they meet their social utility properties; that can be a practical tool to support the decision on the future of the building (i.e., the sequence of necessary refurbishments) or the decision to buy or sell the property by indicating its strengths and weaknesses. By developing a way to assess a comprehensive set of criteria, the proposed method allows you to quickly and easily assess the social quality of residential buildings. In addition, the proposed measures for individual criteria can easily be adapted to requirements in other countries. The proposed “star” classification can also be used as a universal scale for assessing the social quality index of buildings.
    W artykule przedstawiono metodę oceny jednego z trzech podstawowych aspektów budownictwa zrównoważonego dotyczącą socjalnych właściwości użytkowych budynków mieszkalnych. Opracowanie powstało w oparciu o zalecenia norm (PN-EN 15643-3 2012) i (PN-EN 16309+A1: 2014 2014), na których podstawie określono obszar cech charakteryzujących aspekt socjalny w budynkach. Dodatkowo uwzględniono kryteria, które są niezbędne przy ocenie tego aspektu, jednak nie zostały one zawarte w wytycznych normowych. Przeprowadzone zostały badania za pomocą następujących metod: bezpośrednie badania ankietowe użytkowników mieszkań i ekspertów w zakresie budownictwa, badania in situ, przegląd i analiza przepisów prawnych i wytycznych normowych oraz literatury związanej z utrzymaniem i oceną obiektów. Wyznaczone, w wyniku przeprowadzonych badań, cechy pozwalające na przeprowadzenie oceny socjalnej budynków pogrupowano w sześć kategorii głównych tj. dostępność, adaptacyjność, zdrowie i komfort, wpływ na sąsiedztwo, utrzymanie i konserwacja oraz bezpieczeństwo i ochrona. W oparciu o przeprowadzone badania wyznaczono również charakter i sposób oceny poszczególnych wartości cech, które następnie przyjęto, jako kryteria w analizie wielokryterialnej oceny socjalnej budynków. Określenie miar poszczególnych składników oceny wymagało złożonych ustaleń bazowych, które w międzynarodowych normach określono jedynie w sposób ogólny. Koniecznym było opracowanie wskaźników wyrażających przyjęte kryteria oceny dla poszczególnych kategorii. Ustalono sposoby kodowania miar cech wyrażanych w postaci jakościowej do postaci ilościowej. Dla kryteriów wyrażonych w wartościach mianowanych, podano sposób ich przetworzenia do wartości niemianowanych. Pozwoliło to na ujednolicenie skali ocen cząstkowych. Na koniec ustalono sposoby agregacji ocen. Efektem finalnym był również opracowany program komputerowy dostępny na stronie internetowej pozwalający na sprawne przeprowadzenie oceny. Prezentowana metoda wpisuje się w aktualny trend budownictwa zrównoważonego. Metoda ta umożliwia i ułatwia porównanie socjalnych właściwości użytkowych w różnych budynkach mieszkalnych. Pozwala również na klasyfikację budynków ze względu na stopień spełnienia przez nie socjalnych właściwości użytkowych, co może stanowić praktyczne narzędzie wspomagające decyzję dotyczącą dalszych losów budynku (tj. kolejności niezbędnych remontów) lub decyzję o zakupie bądź sprzedaży nieruchomości poprzez wskazanie jej słabych i mocnych stron. Dzięki opracowaniu sposobu oceny kompleksowego zestawu kryteriów proponowana metoda pozwala w łatwy i szybki sposób ocenić jakość socjalną budynków mieszkalnych. Ponadto proponowane miary poszczególnych ocen mogą być w łatwy sposób adaptowane do prawnych wymogów obowiązujących w innych krajach. Proponowana „gwiazdkowa” klasyfikacja może również posłużyć jako uniwersalna skala do oceny wskaźnika jakości socjalnej budynków.
    Źródło:
    Archives of Civil Engineering; 2021, 67, 3; 543-564
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Urban Mentoring jako nowa technika współpracy w procesie planowania partycypacyjnego
    Urban Mentoring as a New Technic of Co-operation in the Planning Process Participants
    Autorzy:
    Rembarz, G.
    Martyniuk-Pęczek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2031633.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    planowanie partycypacyjne
    jakość miejskiej przestrzeni publicznej
    model planowania miejskiego mentoringu
    participatory planning process
    quality of urban public space
    urban mentoring planning model
    Opis:
    Planowanie partycypacyjne uznaje się, zgodnie ze współczesnym paradygmatem rozwoju miast europejskich, za istotne narzędzie zarządzania, którego głównym celem jest generowanie endogenicznych potencjałów wzrostu społeczno-gospodarczego. Temat poprawy jakości przestrzeni publicznej w czterech dzielnicach Gdańska, posłużył jako wyzwanie dla próby przełamania nieefektywnej, polskiej praktyki w partycypacyjnym planowaniu miejskim. Uczestnictwo w dialogu publicznym upoważnia osoby do podjęcia pozytywnej i konstruktywnej postawy w planowaniu. Wskutek luk komunikacyjnych, wynikających z asymetrii wiedzy i doświadczenia, dochodzi często do konfl iktów, utraty porozumienia, manipulacji [Carmona et al. 2010]. Tej problematyce, wsparcia procesu niwelowania barier komunikacyjnych w realizacji partycypacyjnego modelu planowania miast, poświęcony został zrealizowany w latach 2014-15 projekt badawczo- -wdrożeniowy (QV) Quo vadis Gdańsku? Mieszkańcy planują swoje miasto. W pracy opisano mentoring urbanistyczny (MU) – innowacyjną technikę uspołecznienia planowania miejskiego. Nowy model pracy ze społecznością dzielnic miejskich, opracowany został z myślą o wzmocnieniu ich kompetencji niezbędnych do partnerskiego udziału w publicznej debacie nad miastem. W tekście zawarto odniesienia do uwarunkowań i wyzwań polskiej rzeczywistości planistycznej z odwołaniem do znanej zagranicznej praktyki. Zastosowanie modelu zilustrowano na przykładzie wyników uzyskanych w czterech dzielnicach Gdańska. Podsumowanie zawiera refl eksję na temat możliwości szerszych zastosowań.
    A decade of experience in implementation of numerous urban modernization projects in Poland resulted in a lively debate on socialization of the planning process, in which the matter of the public space quality has become the center of gravity. In those years, transformation from the classic administrative model of „bureaucracy planning” to the model of „management planning” has not been complete. The socialist primacy of the public interest in planning has been replaced by a neoliberal, progressive privatization of the public space and of the urban functions, which in reality means dominance of strong private investors’ interests over the local community. The modern National Urban Policy adopted in Poland in 2015 introduces legal bases for corrective reforms of the system, allowing the next step – entering the next phase of building another participative model of city management. This important political decision aimed at introduction of the rules allowing realization of modern developmental concepts, i. e. Smart City, faces numerous barriers associated with too low competencies of building a social consensus based on modern urban planning knowledge. The article describes experience gained through implementation of the Quo vadis Gdańsk? The residents plan their city project involving participatory, strategic planning for improvement of the of the public space quality in the districts Gdańsk. The innovative technique of co-operation between the planners and the local community – urban mentoring – has been an answer to the major contemporary need for modern methods of cohering (balancing) the knowledge about cities. Finding the middle ground between the primacy of public good and the private capital gain allows development of a predictable and reliable situation, lowering of the investment risk, prevention of destructive speculative practices. Urban mentoring facilitates formation of the platforms of permanent and satisfactory compromise for all the parties involved, based on conciliatory co-operation of the urban planning process’ participants. A reflection on the possibilities of applying the results of planning using the above mentioned technique for creative co-operation of the public sector with the local entrepreneurs and with external private investors constitutes the summary.
    Źródło:
    Biuletyn Komitetu Przestrzennego Zagospodarowania Kraju PAN; 2016, 264; 119-146
    0079-3493
    Pojawia się w:
    Biuletyn Komitetu Przestrzennego Zagospodarowania Kraju PAN
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methodology of Fault Diagnosis in Ductile Iron Melting Process
    Autorzy:
    Perzyk, M.
    Kozlowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/382169.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quality management
    information technology
    foundry industry
    process fault diagnosis
    ductile iron
    data driven model
    zarządzanie jakością
    technologia informatyczna
    przemysł odlewniczy
    diagnostyka uszkodzeń
    żeliwo ADI
    model danych
    Opis:
    Statistical Process Control (SPC) based on the Shewhart’s type control charts, is widely used in contemporary manufacturing industry, including many foundries. The main steps include process monitoring, detection the out-of-control signals, identification and removal of their causes. Finding the root causes of the process faults is often a difficult task and can be supported by various tools, including data-driven mathematical models. In the present paper a novel approach to statistical control of ductile iron melting process is proposed. It is aimed at development of methodologies suitable for effective finding the causes of the out-of-control signals in the process outputs, defined as ultimate tensile strength (Rm) and elongation (A5), based mainly on chemical composition of the alloy. The methodologies are tested and presented using several real foundry data sets. First, correlations between standard abnormal output patterns (i.e. out-of-control signals) and corresponding inputs patterns are found, basing on the detection of similar patterns and similar shapes of the run charts of the chemical elements contents. It was found that in a significant number of cases there was no clear indication of the correlation, which can be attributed either to the complex, simultaneous action of several chemical elements or to the causes related to other process variables, including melting, inoculation, spheroidization and pouring parameters as well as the human errors. A conception of the methodology based on simulation of the process using advanced input - output regression modelling is presented. The preliminary tests have showed that it can be a useful tool in the process control and is worth further development. The results obtained in the present study may not only be applied to the ductile iron process but they can be also utilized in statistical quality control of a wide range of different discrete processes.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 101-108
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnosis of Missed Ductile Iron Melts with Process Modelling
    Autorzy:
    Perzyk, M.
    Werlaty, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382916.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quality management
    information technology
    foundry industry
    process fault diagnosis
    ductile iron melting
    data driven model
    zarządzanie jakością
    technologia informacyjna
    przemysł odlewniczy
    diagnostyka uszkodzeń
    topienie żeliwa
    Opis:
    The paper presents an application of advanced data-driven (soft) models in finding the most probable particular causes of missed ductile iron melts. The proposed methodology was tested using real foundry data set containing 1020 records with contents of 9 chemical elements in the iron as the process input variables and the ductile iron grade as the output. This dependent variable was of discrete (nominal) type with four possible values: ‘400/18’, ‘500/07’, ‘500/07 special’ and ‘non-classified’, i.e. the missed melt. Several types of classification models were built and tested: MLP-type Artificial Neural Network, Support Vector Machine and two versions of Classification Trees. The best accuracy of predictions was achieved by one of the Classification Tree model, which was then used in the simulations leading to conversion of the missed melts to the expected grades. Two strategies of changing the input values (chemical composition) were tried: content of a single element at a time and simultaneous changes of a selected pair of elements. It was found that in the vast majority of the missed melts the changes of single elements concentrations have led to the change from the non-classified iron to its expected grade. In the case of the three remaining melts the simultaneous changes of pairs of the elements’ concentrations appeared to be successful and that those cases were in agreement with foundry staff expertise. It is concluded that utilizing an advanced data-driven process model can significantly facilitate diagnosis of defective products and out-of-control foundry processes.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 4; 123-126
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Wax Pattern Surface Quality on Prime Coat of Ceramic Mold
    Autorzy:
    Bałkowiec, A.
    Wawulska, P.
    Matysiak, H.
    Rabajczyk, A.
    Smektała, P.
    Zdunek, J.
    Kurzydłowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/379707.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    casting quality management
    wax pattern
    technological properties
    ceramic shell mold
    roughness
    X-ray tomography
    zarządzanie jakością odlewów
    model woskowy
    właściwości technologiczne
    forma ceramiczna
    chropowatość
    tomografia rentgenowska
    Opis:
    The authors have made an attempt to enrich the knowledge about the influence of wax pattern washing process and its influence on the quality of the shell prime coat. Two types of wax were investigated: A7Fr/60 and KC2690. A7Fr60 is used for pattern fabrication, while KC2690 is typical sprue wax. The goal of work was to establish wax solubility accuracy in Trisol 60 Plus and Houghto Clean 530 versus time and influence of dipping time to wax samples surface quality. Additionally, after exposition of wax samples, their surface morphology was characterized with the use of laser profilometry and surface roughness measurement. The quality of formed prime coat was established by X-ray tomography. The measurement of wetting angle of the wax by binder was conducted. The results have shown that the main factor which influences the quality of the prime coat is surface wettability rather than wax surface roughness.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 67-72
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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