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Wyświetlanie 1-5 z 5
Tytuł:
Open Atlas of Defects as a Supporting Knowledge Base for Cast Iron Defects Analysis
Autorzy:
Sika, R.
Rogalewicz, M.
Kroma, A.
Ignaszak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/379986.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cast iron
castings defects
data acquisition
NDT
computer application
żeliwo
wady odlewów
pozyskiwanie danych
aplikacja komputerowa
Opis:
A significant development of the foundry industry contributes to the creation of high reliability and operational strength castings so that they meet specific standards in accordance with customers’ needs. This technology, however, is inseparably connected with casting defects in finished products. Cast products are subject to various defects which are considered acceptable or not, which is conditioned by the alloy chemical composition and strength characteristics, that is, generally – qualities to be agreed between the foundry and the customer. It is the latter that led the authors to research on designing a tool enabling the most reliable possible assessment of the emerging casting defects, which after proper consultations can be repaired and the casting – sold. The paper presents an original tool named the Open Atlas of Defects (OAD), developed for the last few years to support the evaluation of cast iron defects using Non-Destructive Testing (NDT) casting defects analysis tools (DCC card – Demerit Control Chart, Pareto-Lorenz analysis and ABC analysis). The OAD tool structure was presented as an integral part of the original system module for acquisition and data mining (A&DM) in conjunction with the possibilities of using selected tools for defect analysis support on the example of cast iron casting.
Źródło:
Archives of Foundry Engineering; 2020, 20, 1; 55-60
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying Rough Set Theory for the Modeling of Austempered Ductile Iron Properties
Autorzy:
Kochański, A.
Soroczyński, A.
Kozłowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/382215.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
data mining
knowledge rules
rough set theory
casting
pozyskiwanie danych
reguły wiedzy
teoria zbiorów przybliżonych
odlewnictwo
Opis:
The article discusses the possibilities of employing an algorithm based on the Rough Set Theory for generating engineering knowledge in the form of logic rules. The logic rules were generated from the data set characterizing the influence of process parameters on the ultimate tensile strength of austempered ductile iron. The paper assesses the obtained logic rules with the help of the rule quality evaluation measures, that is, with the help of the measures of confidence, support, and coverage, as well as the proposed rule quality coefficient.
Źródło:
Archives of Foundry Engineering; 2013, 13, 2 spec.; 70-73
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cause-effect Analysis Using A&DM System for Casting Quality Prediction
Autorzy:
Sika, R.
Ignaszak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/380630.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cast iron
castings defects
data acquisition
exploratory data analysis
computer application
żeliwo
wady odlewów
pozyskiwanie danych
analiza danych
aplikacja komputerowa
Opis:
The paper indicates the significance of the problem of foundry processes parameters stability supervision and assessment. The parameters, which can be effectively tracked and analysed using dedicated computer systems for data acquisition and exploration (Acquisition and Data Mining systems, A&D systems) were pointed out. The state of research and methods of solving production problems with the help of computational intelligence systems (Computational Intelligence, CI) were characterised. The research part shows capabilities of an original A&DM system in the aspect of selected analyses of recorded data for cast defects (effect) forecast on the example of a chosen iron foundry. Implementation tests and analyses were performed based on selected assortments for grey and nodular cast iron grades (castings with 50 kg maximum weight, casting on automatic moulding lines for disposable green sand moulds). Validation tests results, applied methods and algorithms (the original system’s operation in real production conditions) confirmed the effectiveness of the assumptions and application of the methods described. Usability, as well as benefits of using A&DM systems in foundries are measurable and lead to stabilisation of production conditions in particular sections included in the area of use of these systems, and as a result to improvement of casting quality and reduction of defect number.
Źródło:
Archives of Foundry Engineering; 2020, 20, 2; 5-12
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Specificity of SPC procedures application in foundry in aspect of data acquisition and data exploration
Autorzy:
Ignaszak, Z.
Sika, R.
Powiązania:
https://bibliotekanauki.pl/articles/380308.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
technologia informatyczna
przemysł odlewniczy
statystyczne sterowanie procesem
karta kontrolna Shewharta
akwizycja danych
pozyskiwanie danych
information technology
foundry industry
statistical process control
shewhart control charts
data acquisition
data mining
Opis:
The paper presents an analysis of SPC (Statistical Process Control) procedures usability in foundry engineering. The authors pay particular attention to the processes complexity and necessity of correct preparation of data acquisition procedures. Integration of SPC systems with existing IT solutions in area of aiding and assistance during the manufacturing process is important. For each particular foundry, methodology of selective SPC application needs to prepare for supervision and control of stability of manufacturing conditions, regarding specificity of data in particular 'branches' of foundry production (Sands, Pouring, Metallurgy, Quality).
Źródło:
Archives of Foundry Engineering; 2012, 12, 4; 65-70
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of SCADA Systems in Control of Green Sands Properties
Autorzy:
Ignaszak, Z.
Sika, R.
Perzyk, M.
Kochański, A.
Kozłowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/381589.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computer aided foundry production
SCADA systems
data acquisition
green sands
green sand properties
wspomaganie komputerowe produkcji
produkty odlewnicze
system SCADA
pozyskiwanie danych
piasek formierski
Opis:
The paper undertakes an important topic of evaluation of effectiveness of SCADA (Supervisory Control and Data Acquisition) systems, used for monitoring and control of selected processing parameters of classic green sands used in foundry. Main focus was put on process studies of properties of so-called 1st generation molding sands in the respect of their preparation process. Possible methods of control of this processing are presented, with consideration of application of fresh raw materials, return sand (regenerate) and water. The studies conducted in one of European foundries were aimed at pointing out how much application of new, automated plant of sand processing incorporating the SCADA systems allows stabilizing results of measurement of selected sand parameters after its mixing. The studies concerned two comparative periods of time, before an implementation of the automated devices for green sands processing (ASMS - Automatic Sand Measurement System and MCM – Main Control Module) and after the implementation. Results of measurement of selected sand properties after implementation of the ASMS were also evaluated and compared with testing studies conducted periodically in laboratory.
Źródło:
Archives of Foundry Engineering; 2016, 16, 1; 5-12
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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