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Browsing by Subject "manufacturing"

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  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Optymalizacja specyficznego zagadnienia organizacji produkcji algorytmem przybliżonym
    (Data obrony: 2018-01-22) Mazurek, Marcin
    Wydział Elektrotechniki, Automatyki, Informatyki i Inżynierii Biomedycznej
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Soft modelling of the shaping of metal profiles in rapid tube hydroforming technology
    (Wydawnictwa AGH, 2022) Sadłowska, Hanna; Kochański, Andrzej Witold
    The paper presents an approach to the impact of process parameters in innovative RTH (Rapid Tube Hydroforming) technology for shaping closed metal profiles in flexible and deformable dies. In order to implement the assumed deformation of the deformed profile, the RTH technology requires the monitoring and control of numerous technological parameters, including geometric, material, and technological variables. The paper proposes a two-stage research procedure considering hard modelling (constitutive) and soft modelling (data-driven). Due to the complexity of the technological process, it was required to develop a numerical finite element method FEM model focused on obtaining the adequate profile deformation measured by the ellipsoidality of the cylindrical profile. Based on the results of the numerical experiments, a preliminary soft mathematical model using ANN was developed. Analysing the soft model results, several statistical hypotheses were made and verified to investigate the significance of selected process parameters. Thanks to this, it was possible to select the most important process parameters, i.e., the properties of moulding sands used for RTH dies: the angle of internal friction and cohesion.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    The acoustic emission (AE) controlling method of the electric sheet blanking process - a comparative study of selected data mining methods
    (Wydawnictwa AGH, 2022) Kochański, Andrzej Witold; Czyżewski, Piotr; Moszczyński, Leszek
    The article presents an experimental stand to assess the state of punch in the process of sheet blanking. Blanking trials were carried out on an eccentric press. During all the trials, there were recorded signals of acoustic emission (AE) that accompanied the process of blanking. For the recorded AE signals, the methodology of data preparation and analysis was presented. On that basis, the results of the assessment of the state of the punch were presented, and they employed five methods of visualization: Andrews curves, Principal Components Analysis, Linear Discriminant Analysis, a modified method of Stochastic Neighbor Embedding and Sammon Mapping. The aim of the work was to assess the possibility of using visualization methods to predict the condition of the tool on the basis of acoustic emission signals in processes carried out in extremely short times.
  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Usprawnienie procesu produkcji z wykorzystaniem zasad Lean Manufacturing
    (Data obrony: 2021-01-18) Kmak, Tomasz
    Wydział Inżynierii Mechanicznej i Robotyki
  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Wybrane narzędzia Lean na przykładzie wybranego przedsiębiorstwa
    (Data obrony: 2019-12-13) Polak, Joanna
    Wydział Zarządzania
  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Zasady projektowania i realizacji instalacji elektrycznych w zakładach produkcyjnych
    (Data obrony: 2017-09-27) Michalik, Beata
    Wydział Elektrotechniki, Automatyki, Informatyki i Inżynierii Biomedycznej