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Computer processing of some surface images of technical objects after influence of the high temperature conditions

Bogdan M.

Acta Mechanica et Automatica

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2008

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Vol. 2, no. 3

19-23

EN

Computer processing of the image of surface of operating gas turbine blades was proposed in order to make the method of the evaluation of the condition of these blades more objective. The dependences and connections between the degree of blade material overheating and the colour of analyzed surfaces were shown on the basis of images registered in visible range of electromagnetic wave (digital image – Charge Coupled Device matrix). The proposal of methodology to assign the overheated areas on the blade’s surface in order to assess the range (of degradation) of thermal usage of the blade and to forecast it's working resources, might be useful to monitor the situation in the operating conditions. Moreover in the article the problematic of acquisition of the form digital images dates was presented by showing physical basis of analysis of reflected signal from metallic surface are showed in aspect of recording by photoelectric light sensor (matrix CCD).

2

Badanie granicy rozdziału faz w kompozycie Al-TiB2 metodą mikroskopii elektronowej

Kostka A., Lelątko J., Gigla M., Morawiec H., Janas A.

Kompozyty

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2002

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R. 2, nr 5

297-301

PL

Mikrostruktura i własności granicy rozdziału faz w kompozycie Al-TiB2 otrzymanego metodą SHSB (Self-Propagating High-temperature Synthesis Bath) były przedmiotem badań z zastosowaniem transmisyjnej mikroskopii elektronowej. Naprężenia wewnętrzne osnowy w pobliżu cząstek TiB2 badano, używając do tego celu metody zbieżnej wiązki dyfrakcyjnej. Analiza linii HOLZ z obrazów CBED umożliwiła pomiar parametrów komórki elementarnej. Pozwoliło to określić rozkład pól naprężeń i umocnienia w obszarze granicy rozdziału faz.

EN

The interface microstructure of AI-TiB2 composite was studied using the SEM, HREM, CBED and X-ray phase analyses. The micrograph of the studied composite (Fig. 1) shows homogenous arrangement of the TiB2 particles in aluminum matrix. The matrix show presence of relatively high dislocation density (Fig. 2). Some strongly refined phase were observed (Fig. 3). Fast Fourier transform of the HREM image obtained from that phase (Fig. 4) show that it can be strongly refined phase of titanium-boron. HREM images of the interface (Fig. 5) of the composite, after the computer processing, exhibit dislocation presence. The local strength of the matrix was investigated near the TiB2 particles, using TEM at CBED mode. Figure 6 shows studied area with well visible dots of the CBED measurement. Analyses of the HOLZ lines from CBED diffraction patterns (Fig. 7) allowed to determine changes of the lattice constant versus interface distance (Fig. 8).

3

Komputery sieciowe

Rawski M., Tomaszewicz P.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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1998

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nr 1

33-38

PL

Przedstawiono ideę komputerów sieciowych jako następny etap w rozwoju techniki domowego przetwarzania danych. Opisano najważniejsze etapy rozwoju komputerów sieciowych, podstawowe ich cechy, a także metody zarządzania zasobami systemu. Zaprezentowano specyfikaje przykładowych komputerów sieciowych.

EN

The idea of the network computer as the next step in the evolution of desktop computing is presented. Main steps of the development of the network computer, and its basic features are described, as well as methods of a system resources management. The specification of samples of network computers is presented.