- Tytuł:
- Examination of changes in the microstructure of gas turbine blades with visual and thermographic methods
- Autorzy:
-
Błachnio, J.
Kułaszka, A.
Kornas, Ł.
Chalimoniuk, M. - Powiązania:
- https://bibliotekanauki.pl/articles/247030.pdf
- Data publikacji:
- 2010
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
gas turbine
vane
diagnostics
thermographic method - Opis:
- The processes associated with operation of turbinę avionic engines entail the occurrence of various defects affecting turbine components, in particular turbine vanes. The main reasons for defects and deterioration of gas turbine vanes include thermal fatigue and overheating of the vane material. This paper outlines the non-destructive test methods that are currently in use and that are based on an analysis of surface images obtained from the examined parts within the visible bandwidth with the use of a ring-wedge detector. Particular attention is paid to opportunities that enable unbiased diagnostics of changes in the microscopic structure of vanes with the use of the non-destructive thermographic method. Initial examinations ofthe gas turbine vanes, both new ones and those already in operation, have demonstrated the existence of interrelations and dependency between the thermal strain during the turbine operation, changes of signals associated with the thermal response from the material and the condition of the vane microstructures. The results of these examinations have been successfully verified with the use of the metallographic method. The demonstrated interrelations and dependency shall serve as a basis to develop fundamentals for a non-destructive thermographic test method intended to assess the overheating condition of the material for gas turbine vanes.
- Źródło:
-
Journal of KONES; 2010, 17, 2; 27-34
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł