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    Wyświetlanie 1-3 z 3
    Tytuł:
    The assessment of quality of products using selected quality instruments
    Autorzy:
    Kardas, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/111860.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    quality
    quality assessment
    methods of quality managements
    quality instruments
    metal sleeve
    jakość
    ocena jakości
    metody zarządzania jakością
    instrumenty zarządzania jakością
    metalowa tuleja
    Opis:
    The quality parameters of products should be controlled at every stage of the production process, since it allows detection of any problems even in the initial stages of production processes and removes their causes during manufacturing. Final control of products is intended to capture non-conforming products that did not go to the customers. The results of such controls should constantly be analysed. Such analysis can help to detect the most common problems, determine some dependences or identify the causes of such situations. A lot of different instruments that can support improvement of processes can be used for this kind of analysis. The paper presents the possibility of using some tools which can be utilized to support the analysis and assessment of quality of products at different stages of the production process. The quality analysis of exemplary products using selected quality methods and tolls is carried out. Metal sleeve, that is part of electronic control subassembly of anti-blocking system of ABS, which was the research component being studied.
    Źródło:
    Production Engineering Archives; 2016, 10, 1; 5-8
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An improvement of quality of the rear cover of bearing turbine with the use of selected methods
    Autorzy:
    Pacana, Andrzej
    Siwiec, Dominika
    Powiązania:
    https://bibliotekanauki.pl/articles/104170.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    quality
    improvement instruments
    nonconformity
    mechanical engineering
    jakość
    narzędzia do doskonalenia
    niezgodność
    inżynieria mechaniczna
    Opis:
    The analyses of the nonconformity of products are made in order to achieve the desired level of their quality. This is also the case in the analyzed enterprise located in south-eastern Poland. Due to production character in this enterprise to identify the incompatibilities of products the non-destructive tests are used. In the current approach to quality after identified the nonconformities the cause her arise were determined, it was noted in order to use by statistical analyzes. Unfortunately, no deeper qualitative analyzes were made which could specify the source of its creation. Therefore, it was considered that it is necessary to propose to use (near current actions according to nondestructive tests) the sequence of quality management instruments. In order to improve the quality control actions, the sequence of techniques which complement each other, i.e. non-destructive tests, Ishikawa diagram and 5Why method, was proposed. To demonstrate the effectiveness of the proposed sequence, the rear cover of the bearing turbine was selected as the subject of the analysis. The choice was conditioned by the unit character of production, which till now was discouraged a detailed analysis of sources of nonconformities. After analyzed the product with used the fluorescent method the nonconformities were identified on the rear cover of the bearing turbine, which was the porosity cluster. In order to identify the causes these nonconformities the Ishikawa diagram was drawn up. Next, the selected main causes (i.e. supplier of the product and nonconformities created during the production of the product) were analyzed the 5Why method in order to identify the source cause of the problem. In this case, it was the nonconformity material from the supplier. The proposed sequence, which uses the minimal resources let to show the wide range of information, which should be used to the improvement of quality. The presented the set of activities can be practised in each of the enterprises to analyze quality problems in order to identify the nonconformities and their causes.
    Źródło:
    Quality Production Improvement - QPI; 2019, 1, 1; 456-463
    2657-8603
    Pojawia się w:
    Quality Production Improvement - QPI
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling and Measurement of Folk Guitar : Truss Rod and Strings in Numerical Analysis of Tone
    Autorzy:
    Bielski, Paweł Michał
    Kujawa, Marcin
    Lubowiecka, Izabela
    Powiązania:
    https://bibliotekanauki.pl/articles/176738.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    sound quality
    musical instruments
    acoustic folk guitar
    string tension
    truss rod
    non-linear modelling
    Opis:
    The study makes an attempt to model a complete vibrating guitar including its non-linear features, specifically the tension-compression of truss rod and tension of strings. The purpose of such a model is to examine the influence of design parameters on tone. Most experimental studies are flawed by uncertainties introduced by materials and assembly of an instrument. Since numerical modelling of instruments allows for deterministic control over design parameters, a detailed numerical model of folk guitar was analysed and an experimental study was performed in order to simulate the excitation and measurement of gitar vibration. The virtual guitar was set up like a real guitar in a series of geometrically non-linear analyses. Balancing of strings and truss rod tension resulted in a realistic initial state of deformation, which affected the subsequent spectral analyses carried out after dynamic simulations. Design parameters of the gitar were freely manipulated without introducing unwanted uncertainties typical for experimental studies. The study highlights the importance of acoustic medium in numerical models.
    Źródło:
    Archives of Acoustics; 2019, 44, 1; 35-49
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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