The rate of decohesion of a gas turbine blade as assessed with the X-ray computed tomography (CT)

• Autorzy: Chalimoniuk M. , Szczepanik R , Błachnio J.
• Języki publikacji: EN

Abstrakty

EN

The overheating of the material is among major reasons for failures/damages to gas turbine blades throughout the entire process of operating aircraft turbine engines. The essential method of diagnosing condition of the blades is metallographic examination being however a destructive technique. The paper has been intended to discuss one of non-destructive testing (NDT) methods, i.e. the X-ray computed tomography (CT), and capabilities of applying it to diagnose changes in condition of gas turbine blades. ‘Tomography’ is a comprehensive term to define a set of diagnostic techniques to produce three-dimensional images that present cross-sections through detail items under scrutiny. The CT is a transmission diagnostic technique that allows layered models (images) of details to be acquired. Most commonly, it is used in research laboratories and throughout the process of the product quality inspection. The paper delivers findings of the preliminary investigation into the assessment of health/maintenance status of gas turbine blades by means of the X-ray computed tomography. The results gained have been successfully verified using the metallographic examination techniques. It has been found that the radiographic imaging method enables recognition of types, sizes, and locations of internal faults in the blades while generating three-dimensional images thereof. Presented are capabilities of the high-resolution X-ray inspection machine with computed tomography (CT), V/tome/x, furnished with a 300 kV tube, and the CT data processing capabilities of the VG Studio Max software solution, high-performance CT reconstruction included (using an optional module). At the same time work is under way with the X-ray tube for nanotomography with the 0.5 􀁐m resolution to examine, in particular, modern composite materials.

Słowa kluczowe

EN

gas turbine; blade; maintenance status; diagnosing; X-Ray computer tomography (CT); composite materials

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 3
• Strony: 89--96
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Chalimoniuk M.

• Air Force Institute of Technology Ksiecia Boleslawa Street 6, 01-494 Warsaw, Poland tel.:[phone], fax: [phone]

autor

Szczepanik R

• Air Force Institute of Technology Ksiecia Boleslawa Street 6, 01-494 Warsaw, Poland tel.:[phone], fax: [phone]

autor

Błachnio J.

• Air Force Institute of Technology Księcia Bolesława Street 6, 01-494 Warsaw, Poland tel.:[phone], fax: [phone] Bialystok Technical University, Wiejska Sreet 45C, 15-351, Białystok, Poland

Bibliografia

• [1] Szczepanik, R., Rządkowski, R., A study on the dynamics of aero engine blades under different operating conditions, ITWL, 2012.
• [2] Błachnio, J., Pawlak, W., Damageability of gas turbine blades - evaluation of exhaust gas temperature in front of the turbine using a non-linear observer, Advances in Gas Turbine Technology, In Tech, pp. 435-464, 2011.
• [3] Błachnio, J., Spychała, J., Pawlak, W., Kułaszka, A., Assessment of technical condition demonstrated by gas turbine blades by processing of images for their surfaces, Journal of KONBIN 1 (21), pp. 41-50, 2013.
• [4] Bogdan, M., Błachnio, J., A non-destructive method to assess condition of gas turbine blades, based on the analysis of blade-surface images, Russian Journal of Nondestructive Testing, Vol. 46, No. 11, pp. 860-866, 2010.
• [5] Chalimoniuk, M., Błachnio, J., Krzysztofik, J., Analysis of the feasibility to investigate condition of gas turbine vanes by means of the radiographic method, Journal of KONBIN, No. 1(13), pp. 129-138, 2010.
• [6] Cierniak, R., Computer Tomography, Design principles of CT equipment, Algorithms for recovering of images, Warsaw 2005 (in Polish).
• [7] Data sheets from YXLON International GmbH.
• [8] Kułaszka, A., Chalimoniuk, M., Błachnio, J., Types of damages to turbines of aircraft turbine engines and possibility of diagnosing them, Journal of Polish CIMAC, Vol. 4, No. 2, pp. 153-160, 2009.
• [9] Kułaszka, A., Bogdan, M., Błachnio, J., New non-destructive methods of diagnosing health of gas turbine blades. Advances in Gas Turbine Technology, In Tech, pp. 465-498, 2011.
• [10] The research report from the X-ray Division of the Oncology Centre in Bydgoszcz, X-ray Computer Tomography, (in Polish).
• [11] The research report from Electronic Instrument Service, CT – X-ray Computer Tomography for industrial applications, (in Polish).