An Attempt Of Evaluation Of Overheating Of Gas Turbine Blades

• Autorzy: Bogdan M.
• Języki publikacji: EN

Abstrakty

EN

Increase of sensitivity and reliability of non-destructive diagnosing of condition of gas turbine blades became possible thanks to discovery of relevance and relationship between change of colour of their surface and change of microstructure of material resulting from influence of high temperatures. The data in the form of digital images were obtained in lab conditions with help of a photosensitive element i.e. a CCD matrix (digital camera). Acquired images were split up to main primary colours i.e. red, green and blue. This allowed to obtain information about variations of colour intensity for individual channels of digital images and for various temperatures applied for heating of blades. Thus, from the point of view of diagnostics of technical objects, with help of a non-invasive method obtained was the important diagnostic information, i.e. change of luminance and chrominance resulting from influence of high temperature on blades. Researched was also the microstructure of surface and sub-surface layer (change of thickness of coating, change of distribution and size of excretions of reinforcing phase y psilon). Obtained information may be useful for evaluation of microstructure of material in the course of operation of gas turbine blades.

Słowa kluczowe

EN

gas turbine blades; evaluation of condition; heat-resistance and creep-resistance; digital image

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2008
• Tom: Vol. 3, no 2
• Strony: 9--13
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Bogdan M.

• Białystok Technical University Wiejska 45c street, 15-351 Białystok, Poland,

Bibliografia

• [1] Dżygadło, Z., and others, Zespoły wirnikowe silników turbinowych, WKŁ, Warsaw, 1982.
• [2] Błachnio, J., Non-destructive testing methods as applied to the diagnosing of turbine engines, EXPLO-DIESEL & GAS TURBINE’05, IV International Scientific – Technical Conference, Gdańsk - Kopenhaga 2005.
• [3] Bojar Z., and others, Zmiany mikrostruktury łopatek ze stopu ŁK-4 w warunkach długotrwałej eksploatacji turbiny silnika lotniczego, Military University of Technology Bulletin, No. 12, pp 51-64, Warsaw 1988.
• [4] Pawlak, W. I., and others, Identyfikacja wpływu stanu technicznego turbinowych silników odrzutowych na rozkład pola temperatury przed turbiną, Report KBN no. 8T12D0142, July 2003.
• [5] Poznańska, A., śywotność łopatek silników lotniczych ze stopu EI-867 w aspekcie odkształcenia niejednorodnego i zmian strukturalnych, Doctor`s thesis, Rzeszow University of Technology, Rzeszów 2000.
• [6] Bogdan, M., Computer processing of some surface images of technical objects after influence of the high temperature conditions, 4th International Conference „Mechatronic Systems and Materials 2008”, Białystok, Poland 2008 – in print.
• [7] Błachnio, J., The effect of high temperature on the degradation of heat-resistant and hightemperature alloys, 4th International Conference „Mechatronic Systems and Materials 2008”, Białystok, Poland 2008 – in print.
• [8] Paton, B., śaroprocznost litiejnych nikieliewych spławow i zaszczita ich ot okislienija, Naukowa Dumka, Kiev 1997.
• [9] Tajra, S., Otani, R., Tieorija wysokotiempieraturnoj procznosti matieriałow, Mietałurgija, Moscow 1986.
• [10] Hernas, A., Żarowytrzymałość stali i stopów, Part I, Silesian University of Technology, Gliwice 1999.
• [11] Dudziński, A., Analiza rentgenostrukturalna stopu EI-929 poddanego długotrwałemu wygrzewaniu. Doctor`s thesis, Military University of Technology, Warsaw 1987.