Wyniki wyszukiwania - BazTech

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Application of terrestrial laser scanning measurements for wind turbine blade condition surveying

Stałowska Paulina, Suchocki Czesław, Zagubień Adam

Metrology and Measurement Systems

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2023

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Vol. 30, nr 3

403--422

EN

Wind turbines are among the key equipment needed for eco-friendly generation of electricity. Maintaining wind turbines in excellent technical condition is extremely important not only for safety but also for efficient operation. Studies indicate that defects in the external structure of a turbine blade reduce energy production efficiency. This research investigated the potential of the terrestrial laser scanning technology to examine the technical conditions of wind turbine blades. The main aim of the study was to examine whether terrestrial laser scanning measurements can be valuable for wind turbine blade condition surveying. The investigation was based on the radiometric analyses of point clouds, which forms the novelty of the present study. Condition monitoring focuses on the detection of defects, such as cracks, cavities, or signs of erosion. Moreover, this study consisted of two stages. The next objective entailed the development and examination of two different measurement methods. It was then identified which method is more advantageous by analysing their effectiveness and other economic considerations.

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Practical verification of the Phong reflection model conducted with the use of terrestial laser field scanning data

Kowalczyk K., Rapiński J., Tomaszewski D.

Technical Sciences / University of Warmia and Mazury in Olsztyn

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2013

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nr 16(1)

73--80

EN

This paper is devoted to a practical verification of applying the Phong model, conducted based on available survey data obtained in field conditions. This model has already been described in previous articles, in which authors, using surveys performed in laboratory conditions, showed how to change the shape of the Phong model function depending on the material on which the laser beam falls. In subsequent publications, the focus was on the relationship between the incidence angle and the maximum distance that can be measured by the rangefinder. The measuring data were obtained as a result of scanning the furnace wall in the heat and power station in Pruszków, Poland with the use of reflectorless laser. The presented way of computation has been substantiated on the basis of calculated quantities, incidence angle and empirically defined parameters of the Phong model.

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Wyznaczenie zależności pomiędzy wielkością intensity a temperaturą obserwowanego obiektu w naziemnym skaningu laserowym

Suchocki C., Rapiński J.

Materiały Budowlane

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2013

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nr 11

59--61

PL

Naziemny skaning laserowy jest aktywnym systemem pozyskiwania danych, który znajduje coraz więcej zastosowań. W wyniku pomiaru TLS uzyskuje się duży zbiór punktów, którym poza współrzędnymi XYZ jest przypisana wartość intensywności odbicia wiązki lasera od obiektu, tzw. intensity. Wielkość ta zależy m.in. od kąta padania wiązki lasera oraz struktury i koloru obiektu. W artykule zaprezentowano wyniki badań, które zmierzały do wyznaczenia zależności pomiędzy wielkością intensity chmury punktów obserwowanego obiektu, a temperaturą tego obiektu. Przeprowadzone badania odnosiły się do pracy Arsat Dewo Kekeba 2007, w której wykazano dużą zależność pomiędzy tymi wielkościami.

EN

Terrestrial laser scanning is an active data acquisition system,which has an increasing number of applications.As a result of a TLS measurement, a large set of points is obtained, to which (apart from the XYZ coordinates) the intensity value of the reflection of laser beam from the object, so-called intensity, is attributed. This quantity depends frommany factors, for example fromthe laser beam incidence angle, the structure and the color of the object. In the paper, the results were presented of the research aimed at a determination of the correlation between the intensity rate of the point cloud of the object under observation and the temperature of this object. The research carried out referred to the paper by Arsat Dewo Kekeb 2007, where strong correlation was demonstrated between those quantities.