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    Wyświetlanie 1-4 z 4
    Tytuł:
    Analysis of Stresses and Strains Distribution of Polyethylene Cups in Hip Joint Endoprosthesis at Various Articular Joints and Friction Conditions
    Autorzy:
    Mordal, Katarzyna
    Szarek, Arkadiusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2049722.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    polyethylene
    UHMWPE
    hip joint endoprosthesis
    friction conditions
    computer modelling
    Opis:
    The article has been devoted to issues connected with the alloplasty and hip joint endoprostheses, that elements are being developed, which is supported by strength, tribological tests on used biomaterials, incl. polyethylene or computer modelling based on e.g. finite element method (FEM). In this paper, the results of research on the impact of the material articulations of the system head – acetabular and friction conditions on strength parameters of polyethylene components in the hip joint endoprosthesis. Numerical analysis of this friction node was carried out, using the ADINA System computer program and the simulations were performed at various friction conditions for metal/ polyethylene and ceramic/ polyethylene articulations with various UHMWPE modifications. The simulations results have shown the influence of tested material associations and friction conditions on parameters related to the strength of polyethylene cups, i.e. their displacements, stresses and deformations.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 2; 523-530
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nondestructive Testing of Ceramic Hip Joint Implants with Laser Spot Thermography
    Autorzy:
    Roemer, J.
    Pieczonka, L.
    Juszczyk, M.
    Uhl, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/356189.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    laser spot thermography
    damage detection
    ceramic materials
    hip joint implants
    Opis:
    The paper presents an application of laser spot thermography for damage detection in ceramic samples with surface breaking cracks. The measurement technique is an active thermographic approach based on an external heat delivery to a test sample, by means of a laser pulse, and signal acquisition by an infrared camera. Damage detection is based on the analysis of surface temperature distribution near the exciting laser spot. The technique is nondestructive, non-contact and allows for full-field measurements. Surface breaking cracks are a very common type of damage in ceramic materials that are introduced in the manufacturing process or during the service period. This paper briefly discusses theoretical background of laser spot thermography, describes the experimental test rig and signal processing methods involved. Damage detection results obtained with laser spot thermography are compared with reference measurements obtained with vibrothermography. This is a different modality of active thermography, that has been previously proven effective for this type of damage. We demonstrate that both measurement techniques can be effectively used for damage detection and quality control applications of ceramic materials.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 4; 2133-2139
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biometrological method of pelvis measurement and anatomical positioning of endoprosthesis of hip joint
    Autorzy:
    Ryniewicz, A.
    Ryniewicz, A. M.
    Madej, T.
    Sładek, J.
    Gąska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/220874.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    measurement
    solid modeling
    endoprosthesis of hip joint
    pelvis
    virtual positioning
    Opis:
    This elaboration presents the method of virtual positioning of the construction of an endoprosthesis of hip joint in a patient's pelvis and femoral bone, reconstructed on the basis of imaging obtained from computer tomography. It is based on the matching of an implant to individual anatomical-biomechanical conditions. The method is established on the following procedures: diagnostic, spatial modeling, virtual measuring and targeted biometrological application for the model of bone structures. The final effect of the completed procedures is selection and optimal positioning of the endoprosthesis of hip joint before a planned medical intervention. The determined geometrical parameters of bone structures and settled positioning of the endoprosthesis can create data for the system of computer navigation.
    Źródło:
    Metrology and Measurement Systems; 2013, 20, 1; 17-26
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design and analysis of cementless hip-joint system using functionally graded material
    Autorzy:
    Asiri, Saeed
    Powiązania:
    https://bibliotekanauki.pl/articles/2065758.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    functionally graded material
    cementless hip-joint system
    natural frequency
    harmonic response
    fatigue analysis
    finite element analysis
    modal analysis
    odpowiedź harmoniczna
    analiza zmęczeniowa
    analiza elementów skończonych
    analiza modalna
    Opis:
    Functionally Graded Materials (FGM) are extensively employed for hip plant component material due to their certain properties in a specific design to achieve the requirements of the hip-joint system. Nevertheless, if there are similar properties, it doesn’t necessarily indicate that the knee plant is efficiently and effectively working. Therefore, it is important to develop an ideal design of functionally graded material femoral components that can be used for a long period. A new ideal design of femoral prosthesis can be introduced using functionally graded fiber polymer (FGFP) which will reduce the stress shielding and the corresponding stresses present over the interface. Herein, modal analysis of the complete hip plant part is carried out, which is the main factor and to date, very few research studies have been found on it. Moreover, this enhances the life of hip replacement, and the modal, harmonic, and fatigue analysis determines the pre-loading failure phenomena due to the vibrational response of the hip. This study deals with the cementless hip plant applying the finite element analysis (FEA) model in which geometry is studied, and the femoral bone model is based in a 3D scan.
    Źródło:
    Archive of Mechanical Engineering; 2022, LXIX, 1; 129--146
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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