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    Wyświetlanie 1-4 z 4
    Tytuł:
    An overview of different possibilities to master the challenge of coupling an ae-sensor to an object of interest partly using examples of previous investigations
    Autorzy:
    Ziegler, Burkhard
    Dudzik, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/242674.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    acoustic emission sensor
    application
    mounting
    couplant
    waveguide
    Opis:
    Acoustic emission analysis is defined as a passive, non-destructive investigation method, which only listens for AEwaves (AEW), generated actively by an object of interest. Therefore, the AEW must have the possibility to propagate from their source to an acoustic emission sensor (AES). By virtue of the piezoelectric effect, the AEW transmitted into electrical signals inside of the AES. During the analysation of these electrical signals we earn –online– information about the object of interest, e.g. the operating characteristic of a machine or the strength of the friction of a tribolocical system. To enable the AEW to propagate into the AES, the sensor has to be fixed suitable onto the object of interest. Hereby has to be strictly respected, that the sensor is fixed in a reproducible mechanical way as well as to ensure that the through-transmission has a weak attenuation (couplant). Standard AES have the shape of a circular cylinder (diameter and height depend on the operation purpose), the AEW pass through one of the frontends into the sensor. The objects of interest can have different geometry of the surface (e.g. plane, cylindrical, unspecific) or temperatures which usually conflicting the operating range of the sensor. Depending on the operational purpose, there are many different couplants to use. This article offers help to master the different connecting challenges within the range of acoustic emission analysis.
    Źródło:
    Journal of KONES; 2019, 26, 1; 207-214
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Issues during assembly new type of electric brake prototype and initial tests of individual components
    Autorzy:
    Grygorcewicz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/245104.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    assembly
    electric brake
    prototype
    mounting
    new designing
    Opis:
    In this article, the author focused on the two main issues. Firstly, the assembly phase of the new type of electric brake prototype was described and secondly author introduced the initial tests of individual components. The assembly phase of the new prototype of the electric brake was very significant. In this stage, the parts were fitted and mounted. The new functionality of new type prototype was checked and the designing was verified. If there were some mounting problems this was proper time to correct the dimensions and exchange parts. Sometimes the materials or even or heat treatment of some part were exchanged. In that kind of prototype, it was really important to check electric parts like motors during the load. The most important issue was to find the best solution. The motors weight should have been as small as possible and the nominal torque should have been enough for normal working of prototype. In the initial tests of individual components, the real parameters were tested and possibility of using the parts was checked too. During designing phase, the parameters were defined and the tests results gave the answers for the possibility of real working on the object. The most important parameters there were the motors parameters and the possibility of mechanism force transmission.
    Źródło:
    Journal of KONES; 2018, 25, 3; 213-218
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling and Simulation Testing of Main Bearing Loads and Strains in Crankshafts Caused by Deviations in the Position of the Shaft Journal and Bearing Axes
    Autorzy:
    Nozdrzykowski, Krzysztof
    Grządziel, Zenon
    Powiązania:
    https://bibliotekanauki.pl/articles/2064685.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    modeling
    simulation testing
    load
    strain
    crankshafts
    bearing
    mounting
    geometrical deviation
    Opis:
    This article presents the results of a simulation, testing the variation of main bearing loads and strains in crankshafts caused by geometrical deviations of the bearing system to justify the necessity and purposefulness of measurements of both the shape and axes position deviations of crankshaft journals. Measurements of these deviations at the existing level of applied measuring techniques are significantly limited. The research also accentuates the practical implementation of a measuring system equipped with the so-called flexible support system for the measured object, developed at the Maritime University of Szczecin. This system makes it possible to eliminate elastic deformations of the crankshaft due to its own weight, whereby the measurements of geometrical deformations of the crankshafts can be carried out with appropriate accuracy in conditions corresponding to the non-reference measurements when determining the object measured in counterpoints. The obtained results have fully confirmed the purposefulness of the conducted research and the validity of the theses.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 41--56
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Drewno i wyroby drewnopodobne we współczesnych elewacjach
    Wood and wood-like product within facades of the contemporary buildings
    Autorzy:
    Piróg, M.
    Chądzyński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/160480.pdf
    Data publikacji:
    2016
    Wydawca:
    Polski Związek Inżynierów i Techników Budownictwa
    Tematy:
    materiał elewacyjny
    drewno
    okładzina drewniana
    drewno egzotyczne
    materiał kompozytowy
    kompozyt drewno-polimer
    facade material
    wood
    timber cladding
    exotic timber
    composite material
    wood polymer composite
    mounting
    Opis:
    Artykuł opisuje współczesne elewacje drewniane na ścianach zewnętrznych, które wykonywane są w dwojaki sposób. Pierwszy z nich to okładziny tradycyjne wykonywanie z tarcicy. Drugi to okładziny elewacyjne wykonane z desek i płyt kompozytowych, produkowane z dodatkiem rozdrobnionego drewna oraz produkty okładzinowe z drewnopodobnym licem imitującym fakturę drewnianą. Okładziny drewniane montowane mogą być na ścianach o różnej konstrukcji: murowanych, żelbetowych i drewnianych. Obecnie, zarówno naturalne drewno jak i kompozytowe materiały okładzinowe są stosowane z równym powodzeniem we współczesnym budownictwie.
    The article describes the contemporary exterior wooden facades, which are created in two ways. First method employs conventional panels made out of sawn timber. The second method utilizes facade panels made out of boards and composite panels, manufactured with the use of shredded wood, and panels which use wood-like texture, imitating the real material. Wooden panels may be installed on a variety of walls, including walls made out of bricks, ferro-concrete or wood. Currently, both the natural wood, as well as the composite facade panels, are used widely, within the field of contemporary civil engineering.
    Źródło:
    Przegląd Budowlany; 2016, R. 87, nr 6, 6; 37-40
    0033-2038
    Pojawia się w:
    Przegląd Budowlany
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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