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    Wyświetlanie 1-4 z 4
    Tytuł:
    Track and gauge geometry measurements – the present and future
    Autorzy:
    Moskal, A.
    Pastucha, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/114250.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    railway gauge measurements
    railway track measurements
    track gauge
    mobile mapping systems
    Opis:
    The acts, regulations and technical instructions in force imply the obligation of regular monitoring of the railroad condition at the railroad management institutions. This monitoring consists of several types of measurements, most important of which – railroad surface diagnostics – covers the assessment of the technical condition of tracks by measuring the key parameters specifying the rail track position. This paper presents the currently applied solutions, new technologies and potential directions of measurement method development.
    Źródło:
    Measurement Automation Monitoring; 2016, 62, 2; 66-71
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The study of track gauge influence on lateral stability of 4-axle rail vehicle model
    Autorzy:
    Dusza, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/223972.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    numerical simulation
    rail vehicle
    critical velocity
    track gauge
    pojazd szynowy
    prędkość krytyczna
    szerokość toru
    Opis:
    Analysis of lateral stability of rail vehicle model is the subject of present paper. The method used by the author is based on bifurcation diagrams creation and analysis. The continued study of stability of vehicle model in straight track and curved track and form of the results presentation are original features of the method. Results for the straight track and wide range of radii of the curved track are presented jointly on the combined bifurcation diagrams in this paper. Multibody dynamics software VI-Rail was used for numerical analysis. Passenger vehicle model and track models were created. Analysis of track gauge influence on vehicle model stability is main aim of this paper. But analysis of possibility to adopt the method worked out earlier to the newly used numerical code and model of 4-axle vehicle is the aim either.
    Źródło:
    Archives of Transport; 2014, 30, 2; 7-20
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Titanosaur trackways from the Late Cretaceous El Molino Formation of Bolivia (Cal Orck’o, Sucre)
    Autorzy:
    Meyer, C. A.
    Marty, D.
    Belvedere, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/973710.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    track morphotypes
    sauropods
    new ichnogenus
    quadrupedal
    trackway gauge variation
    Opis:
    The Cal Orck’o tracksite is exposed in a quarry wall, approximately 4.4 km NW of Sucre (Department Chuquisaca, Bolivia) in the Altiplano/Cordillera Oriental, in the El Molino Formation (Middle Maastrichtian). Fossiliferous oolitic limestones, associated with large, freshwater stromatolites and nine levels of dinosaur tracks in the El Molino Formation document an open lacustrine environment. The main track-bearing level is almost vertical with a surface area of ~ 65,000 m2. The high-resolution mapping of the site from 1998 to 2015 revealed a total of 12,092 individual dinosaur tracks in 465 trackways. Nine different morphotypes of dinosaur tracks have been documented. Amongst them are several trackways of theropods, ornithopods, ankylosaurs and sauropods, with the latter group accounting for 26% of the trackways. Two different types of sauropod trackways are present. One exhibits speech-bubble-shaped manus impressions that are rotated outwardly and located more outwards than pes prints, and oval to rounded pes imprints with few details, but with a characteristic oval track shape. The second morphotype has more rounded and axially compressed pes imprints and horseshoe-like manus impressions. The manus shows clear impressions of digits I and V The first morphotype with the more rounded manus can be attributed to a derived titanosaur. The second is assigned to the new ichnogenus Calorckosauripus and was probably made by a basal titanosaur. Both sauropod morphotypes exhibit a narrow-gauge and a wide-gauge stance along the same trackway, and therefore the authors suggest that trackway width may not be correlated, or may not be correlated completely with the osteological characters of the trackmaker’s skeleton.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2018, 88, 2; 223-241
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnostics and optimisation of crane track durability in metallurgical plant
    Autorzy:
    Kuľka, J.
    Faltinová, E.
    Kopas, M.
    Mantič, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/329642.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    diagnostics
    bridge crane
    crane track
    strain gauge measurement
    residual durability
    diagnostyka
    czujnik tensometryczny
    pomiar
    suwnica pomostowa
    trwałość resztkowa
    Opis:
    This paper deals with questions concerning technical diagnostics and optimisation of fatigue durability for the crane track beams installed in a metallurgical plant. The fatigue durability is determined using a strain gauge measurement in order to calculate the relevant residual durability of the crane track beams. Consequently, there are proposed suitable measures that are necessary with regard to the next operation of the given crane track, which is supporting a bridge crane.
    Źródło:
    Diagnostyka; 2016, 17, 3; 41-46
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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