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Wyszukujesz frazę "surface topography measurement" wg kryterium: Temat

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Investigation of noise in surface topography measurement using structured illumination microscopy
    Autorzy:
    Li, Zhen
    Gröger, Sophie
    Powiązania:
    https://bibliotekanauki.pl/articles/2052124.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    surface topography measurement
    measurement noise
    uncertainty
    structured illumination microscopy
    Opis:
    Noise is a fundamental metrological characteristic of the instrument in surface topography measurement. Therefore, measurement noise should be thoroughly studied in practical measurement to understand instrument performance and optimize measurement strategy. This paper investigates the measurement noise at different measurement settings using structured illumination microscopy. The investigation shows that the measurement noise may scatter significantly among different measurement settings. Eliminating sample tilt, selecting low vertical scanning interval and high exposure time is helpful to reduce the measurement noise. In order to estimate the influence of noise on the measurement, an approach based on metrological characteristics is proposed. The paper provides a practical guide to understanding measurement noise in a wide range of applications.
    Źródło:
    Metrology and Measurement Systems; 2021, 28, 4; 767-779
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparisons of envelope morphological filtering methods and various regular algorithms for surface texture analysis
    Autorzy:
    Podulka, Przemysław
    Powiązania:
    https://bibliotekanauki.pl/articles/220525.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    surface texture
    surface topography measurement
    envelope filter
    morphological filtering
    measurement errors
    Opis:
    In this paper both envelope approach and morphological filters for characterisation of surface textures were proposed, applied and thoroughly examined. Obtained results were compared with those received after appliance of commonly-used algorithms. The effect of appliance of proposed procedures on surface topography parameters (from ISO 25178 standard) was taken into consideration. The following types of surface textures were assessed: two-process plateau-honed cylinder liners, plateau-honed cylinder liners with additionally burnished dimples, turned piston skirts, grinded and/or isotropic topographies. It was assumed that envelope characteristics (envelope filtration) can provide results useful for assessments of deep and/or wide oil-reservoirs especially when they are edge located. Moreover, some near-valley areas of surface texture details can be less distorted when envelope filtering is accomplished. It was also found that closing and/or opening envelope filtration can be valuable for reduction of some surface topography measurement errors.
    Źródło:
    Metrology and Measurement Systems; 2020, 27, 2; 243-263
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Roughness Parameters Calculation By Means Of On-Line Vibration Monitoring Emerging From AWJ Interaction With Material
    Autorzy:
    Hreha, P.
    Radvanska, A.
    Knapcikova, L.
    Królczyk, G. M.
    Legutko, S.
    Królczyk, J. B.
    Hloch, S.
    Monka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/221321.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    abrasive water jet
    surface topography
    material vibration
    vibration measurement
    Opis:
    The paper deals with a study of relations between the measured Ra, Rq, Rz surface roughness parameters, the traverse speed of cutting head v and the vibration parameters, PtP, RMS, vRa, generated during abrasive water jet cutting of the AISI 309 stainless steel. Equations for prediction of the surface roughness parameters were derived according to the vibration parameter and the traverse speed of cutting head. Accuracy of the equations is described according to the Euclidean distances. The results are suitable for an on-line control model simulating abrasive water jet cutting and machining using an accompanying physical phenomenon for the process control which eliminates intervention of the operator.
    Źródło:
    Metrology and Measurement Systems; 2015, 22, 2; 315-326
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer aided stereometric evaluation of porostructural-osteoconductive properties of intra-osseous implant porous coatings
    Autorzy:
    Uklejewski, R.
    Winiecki, M.
    Rogala, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/220521.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    surface topography
    porous coating characterization
    poroaccessibility
    3D measurement
    Opis:
    The proper interaction of bone tissue - the natural porous biomaterial - with a porous coated intra-osseous implant is conditioned, among others, by the implant porous coating poroaccessibility for bone tissue adaptive ingrowth. The poroaccessibility is the ability of implant porous coating outer layer to accommodate the ingrowing bone tissue filling in its pore space and effective new formed bone mineralizing in the pores to form a biomechanically functional bone-implant fixation. The functional features of the microtopography of intra-osseous implant porous surfaces together with the porosity of pore space of the outer layer of the porous coating are called by bioengineers the porostructural-osteoconductive properties of the porous coated implant. The properties are crucial for successful adaptive bone tissue ingrowth and further long-term (secondary) biomechanical stability of the boneimplant interface. The poroaccessibility of intra-osseous implants porous coating outer layers is characterized by - the introduced in our previous papers - set of stereometric parameters of poroaccessibility: the effective volumetric porosity φVef, the index of the porous coating space capacity VPM, the representative surface porosity φSrep, the representative pore size pSrep, the representative angle of the poroaccessibility Ωrep and the bone-implant interface adhesive surface enlargement index ψ. Presented in this paper, an original method of evaluation of the porostructural-osteoconductive properties of intra-osseous implant porous coatings outer layer by means of the parameters of poroaccessibility was preliminary verified during experimental tests performed on the representative examples of porous coated femoral stems and acetabular cups of various hip endoprostheses. The computer-aided stereometric evaluation of the microstructure of implant porous coatings outer layer can be now realized by the authoring application software PoroAccess_1.0 elaborated in our research team in Java programming language.
    Źródło:
    Metrology and Measurement Systems; 2013, 20, 3; 431-442
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Product quality assessment – measurement and analysis of surface topography
    Autorzy:
    Niemczewska-Wójcik, M.
    Sładek, J.
    Tabaka, M.
    Wójcik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/220537.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    surface metrology
    topography
    measurement devices
    analysis of defects
    quality
    Opis:
    This paper concerns the issues of measurement techniques, analysis and assessment of the machined surface geometric structure. The aim of this work was to show the application of surface analysis in diagnosing the causes of discrepancies occurring in the manufacturing process, which may result from ill-matched (poorly fitting) process parameters. An appropriate system of control and interpretation of results may allow early reaction to unfavorable trends (for example blunting of the tool) and prevention of undesirable defects. The subject of research was a waste basket used in the construction of retaining sewer systems. In this paper, the quality of the waste basket as well as its manufacturing process were analyzed and assessed. The research was carried out with the use of three measurement stands, i.e. optical microscopy (OM), scanning electron microscopy (SEM) and white light interferometer (WLI). The surface analysis proved to be important from the viewpoint of outlining the production process as well as improving the product quality. The software used for topographical analysis appeared to be significant for the success of the analysis, providing notable economic effects, namely the lack of defects.
    Źródło:
    Metrology and Measurement Systems; 2014, 21, 2; 271-280
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Large Area Concrete Surface Topography Measurements Using Optical 3D Scanner
    Autorzy:
    Majchrowski, R.
    Grzelka, M.
    Wieczorowski, M.
    Sadowski, Ł.
    Gapiński, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/221494.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    3D surface metrology
    concrete
    optical method
    roughness
    topography measurement
    Opis:
    The paper presents examinations of the surface of base concrete with a 3D scanner. Two base concrete surfaces, differently prepared, were examined, together with two measurement strategies: simple and fast 3D scanning and partial scanning in selected areas corresponding to the device measurement space. In order to complete the analysis of a concrete surface topography an original Matlab-based program TAS (Topography Analysis and Simulation) was developed for both 2D and 3D surface analyses. It enables data processing, calculation of parameters, data visualization and digital filtration.
    Źródło:
    Metrology and Measurement Systems; 2015, 22, 4; 565-576
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fabrication of Multilayer Cu/Ni Systems with Nanometric Layers by Electrolysis Method
    Autorzy:
    Spilka, M.
    Babilas, R.
    Ratuszek, W.
    Kowalska, J.
    Matus, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/353254.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Cu/Ni multilayer systems
    galvanic method
    thickness measurement
    surface morphology
    topography
    Opis:
    The paper presents research results of multilayer systems composed of alternate Cu/Ni layers. The layers thickness obtained by the galvanic treatment was determined by using the transmission electron microscopy and X-ray diffraction method in the grazing incidence diffraction geometry. The surface morphology was observed using scanning electron microscope with EDS microanalysis. Observation of the surface topography of systems using the atomic force microscope was also carried out.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 4; 2067-2073
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Advanced metrology of surface defects measurement for aluminum die casting
    Autorzy:
    Świłło, S. J.
    Myszka, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/381915.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nondestructive testing
    aluminum die casting
    surface defect
    topography measurement
    scanning method
    badania nieniszczące
    odlewanie ciśnieniowe
    wada powierzchniowa
    pomiar topografii powierzchni
    Opis:
    The scientific objective of the research is to develop a strategy to build computer based vision systems for inspection of surface defects in products, especially discontinuities which appear in castings after machining. In addition to the proposed vision inspection method the authors demonstrates the development of the advanced computer techniques based on the methods of scanning to measure topography of surface defect in offline process control. This method allow to identify a mechanism responsible for the formation of casting defects. Also, the method allow investigating if the, developed vision inspection system for identification of surface defects have been correctly implemented for an online inspection. Finally, in order to make casting samples with gas and shrinkage porosity defects type, the LGT gas meter was used . For this task a special camera for a semi-quantitative assessment of the gas content in aluminum alloy melts, using a Straube-Pfeiffer method was used. The results demonstrate that applied solution is excellent tool in preparing for various aluminum alloys the reference porosity samples, identified next by the computer inspection system.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 3 spec.; 227-230
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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