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Wyszukujesz frazę "machine vibration" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Optimal configuration and parameters of translational dynamic vibration absorbers in vibroisolation of mechanical press
    Autorzy:
    Łatas, Waldemar
    Dziechciowski, Zygmunt
    Powiązania:
    https://bibliotekanauki.pl/articles/2146578.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    dynamic vibration absorber
    discrete system vibration
    machine vibration isolation
    dynamiczny pochłaniacz drgań
    drgania układów dyskretnych
    izolacja drgań maszyny
    Opis:
    The paper deals with the problem of optimizing the positions and parameters of dynamic vibration absorbers for a mechanical press subjected to polyharmonic inertial excitation. Under the assumption of small vibrations a linear dynamic model of a rigid body performing a planar motion, on viscoelastic supports, with an attached system of translational tuned mass dampers is constructed. The problem of vibroisolation of the machine is presented, considering selected harmonics of the force transmitted to the ground, the solutions with a single DVA are proposed.
    Źródło:
    Vibrations in Physical Systems; 2020, 31, 3; art. no. 2020314
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vibration signal as a support for the processes production management in enterprises of the furniture industry
    Autorzy:
    Górnicka, Dorota
    Szwedzka, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/127975.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    machine vibration
    management
    machining centre
    furniture industry
    drgania maszyn
    zarządzanie
    centrum obróbkowe
    przemysł meblarski
    Opis:
    Activities of maintenance services cover not only the performance of ongoing repairs, but, above all, the prevention of failures and downtime. Adopting preventive measures to maintain machinery and equipment in manufacturing enterprises has a significant impact on the timely execution of orders, which is why monitoring the state of the machine park is becoming common in robotic manufacturing enterprises. Currently, the most frequently observed diagnostic parameters relate to machine vibrations. Information on exceeding the permissible thresholds allows for appropriate reaction of maintenance services aimed at minimizing unplanned downtime. The diagnostic aspect is beyond dispute here. However, there is a question whether the vibration signal can additionally be a carrier of information about the production process - information that can be used at the stage of technological process assessment, or even at the stage of process control? Searching for the answer to this question, one of machining centres for mass production of glued panels in the furniture industry was analyzed. Information obtained from maintenance services was confronted with information from standard vibration measurements. The article is an attempt to answer the question of how to properly use at the management stage knowledge of vibration signals generated by motors mounted on the production line.
    Źródło:
    Vibrations in Physical Systems; 2019, 30, 2; 1-8
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Short time vibration analysis and parameterisation as a tool for machine prototypes testing
    Autorzy:
    Barczewski, Roman
    Powiązania:
    https://bibliotekanauki.pl/articles/2146636.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    machine vibration
    non-stationarity identification
    short time signal analysis
    drgania maszyn
    identyfikacja niestacjonarności
    krótkoczasowa analiza sygnału
    Opis:
    The paper outlines the idea of using the short-time vibration signal processing for testing machines of a complex design, particularly the machines consisting of many subassemblies with a non-stationary (e.g. cyclic) operation modes. The method presented consists in graphic representation of vibrations of subassemblies in the form of a trace on a plane. It is created by associating instantaneous rms values of vibration acceleration and instantaneous Rice frequency values obtained as a result of short-time signal processing. On the basis of the shape, orientation of the created trajectory and / or dispersion / concentration of points on the Rf - arms plane, the type of non-stationarity of generated vibrations can be identified. The presented methodology can be used for testing machine prototypes. The results in the proposed form can be helpful to determine the type of vibration reduction systems for individual machine subassemblies. It is also possible to detect subassemblies for which an increase in machine capacity results in an increase in the level of generated vibrations. The location of the averaged values of measures obtained for a new machine on the Rf - arms plane can be a reference point for further monitoring of machine vibration and for detection of damage or malfunction of its subassemblies.
    Źródło:
    Vibrations in Physical Systems; 2020, 31, 1; art. no. 2020112
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact sound reduction measurement method for lightweight floor screed
    Autorzy:
    Pilch, Adam
    Duda, Piotr
    Rubacha, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/2146646.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    lightweight floor screed
    tapping machine
    vibration
    impact sound reduction
    lekka wylewka podłogowa
    gwinciarka
    drgania
    redukcja dźwięków uderzeniowych
    Opis:
    Development and implementation of a new product in the form of a lightweight screed with high impact sound reduction require a lot of measurements of different aggregates of lightweight elements and filling. The manufacturing process influences the final parameters of the solutions as well. This is why a method was developed, that allowed a comparison of many different samples within one measurement session. The measured samples must therefore be small and easy to move. In the paper, various possibilities of impact sound reduction measurements were analyzed being different variants of the normative methods and those existing in the literature on the subject. Based on the obtained results, it was shown that for lightweight floor screeds, sound pressure level measurement is more reliable than vibration acceleration measurements. The top vinyl layer used between the tapping machine and the sample did not influence the results significantly and protected the sample from being distorted by the tapping machine hammers.
    Źródło:
    Vibrations in Physical Systems; 2021, 32, 1; art. no. 2021114
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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