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Wyszukujesz frazę "defects analysis" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Product quality assessment – measurement and analysis of surface topography
Autorzy:
Niemczewska-Wójcik, M.
Sładek, J.
Tabaka, M.
Wójcik, A.
Powiązania:
https://bibliotekanauki.pl/articles/220537.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
surface metrology
topography
measurement devices
analysis of defects
quality
Opis:
This paper concerns the issues of measurement techniques, analysis and assessment of the machined surface geometric structure. The aim of this work was to show the application of surface analysis in diagnosing the causes of discrepancies occurring in the manufacturing process, which may result from ill-matched (poorly fitting) process parameters. An appropriate system of control and interpretation of results may allow early reaction to unfavorable trends (for example blunting of the tool) and prevention of undesirable defects. The subject of research was a waste basket used in the construction of retaining sewer systems. In this paper, the quality of the waste basket as well as its manufacturing process were analyzed and assessed. The research was carried out with the use of three measurement stands, i.e. optical microscopy (OM), scanning electron microscopy (SEM) and white light interferometer (WLI). The surface analysis proved to be important from the viewpoint of outlining the production process as well as improving the product quality. The software used for topographical analysis appeared to be significant for the success of the analysis, providing notable economic effects, namely the lack of defects.
Źródło:
Metrology and Measurement Systems; 2014, 21, 2; 271-280
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of FMEA in the Quality Estimation of Metal Matrix Composite Castings Produced by Squeeze Infiltration
Autorzy:
Gawdzińska, K.
Chybowski, L.
Przetakiewicz, W.
Laskowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/353212.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
quality
casting
metal matrix composites
MMC
failure modes and effects analysis
FMEA
material defects
failures
Opis:
Metal matrix composites (MMCs) are still scarcely described due to various combinations of used materials and a wide array of technologies. Applying the Failure Mode and Effect Analysis (FMEA) method to describe the quality of metal composite castings may contribute to eliminating specific (characteristic only to these materials) defects. This part of the analysis determines the criticality numbers, meaning the frequency of a given failure, detectability level and significance of a given failure to the group of specific composite casting failures. It contributes to establishing the priority number (P), which is a measure used to assess risk, a notion essential in discussing quality in a composite casting.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 4; 2171-2182
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The defect analysis of Inconel 738LC with computed tomography inspection
Autorzy:
Ciećko, Andrzej
Kamiński, Łukasz
Wierzba, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/175802.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computed tomography
CT
material defects
Inconel 738LC
tensile test
chemical analysis
material properties
nondestructive
Inconel
Opis:
In the present paper, computed tomography (CT) inspection is shown. The CT inspection method allowed to rate the density of defects hidden inside a material, which has a significant role in the live material. The method allows to evaluate the reliability of tensile test’s results. In our analysis, the position of crack propagation was determined by CT, and the tensile test was performed to check the accuracy of the nondestructive method. The tensile tests were performed on Inconel 738LC [1] samples.
Źródło:
Advances in Manufacturing Science and Technology; 2020, 44, 3; 80-83
0137-4478
Pojawia się w:
Advances in Manufacturing Science and Technology
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
    Wyświetlanie 1-4 z 4

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