Assessing the Condition of Gas Turbine Rotor Blades with the Optoelectronic and Thermographic Methods
Gas turbines and their blades in particular might be damaged in the course of the aviation turbojet engine operation process. The degradation process of the blade microstructure is most evident from the change in the colour of its surface. This is assessed using the optoelectronic method. The articl...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-01-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/9/1/31 |
| _version_ | 1819289625775046656 |
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| author | Mariusz Bogdan Józef Błachnio Artur Kułaszka Marcin Derlatka |
| author_facet | Mariusz Bogdan Józef Błachnio Artur Kułaszka Marcin Derlatka |
| author_sort | Mariusz Bogdan |
| collection | DOAJ |
| description | Gas turbines and their blades in particular might be damaged in the course of the aviation turbojet engine operation process. The degradation process of the blade microstructure is most evident from the change in the colour of its surface. This is assessed using the optoelectronic method. The article presents the concept of non-destructive methods, which are used to assess the degree of degradation of the alloy of a gas turbine blade. The proposed optoelectronic method is the basic method for the preliminary determination of color changes in the surface. Appropriate videoscopes or video-analyzers, capable of recording a test object in various electromagnetic wave ranges (infrared radiation, visible range), are used for this purpose. These preliminary results of the diagnosis make it possible to infer further studies of the blade. For accurate investigation of the state of the alloy microstructure, a non-destructive thermographic method (xenon flash pulsed thermography) was used. The results of studies of the degradation of the microstructure with the use of non-destructive methods were verified through the use of metallographic investigations. Appropriate metallographic specimens were created in order to recognize phase γ′ degradation (i.e., the phase strengthening the blade alloy). The results of the presented research allowed for an in-depth assessment of the degree of microstructure degradation of operated blades. |
| first_indexed | 2024-12-24T03:09:50Z |
| format | Article |
| id | doaj.art-6969ca3d09864e738d408c3ac1dbc7ef |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-24T03:09:50Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-6969ca3d09864e738d408c3ac1dbc7ef2022-12-21T17:17:51ZengMDPI AGMetals2075-47012019-01-01913110.3390/met9010031met9010031Assessing the Condition of Gas Turbine Rotor Blades with the Optoelectronic and Thermographic MethodsMariusz Bogdan0Józef Błachnio1Artur Kułaszka2Marcin Derlatka3Department of Mechanical Engineering, Bialystok Technical University, 45 Wiejska str., 15-333 Białystok, PolandAir Force Institute of Technology, 6 Księcia Bolesława str., 01-494 Warszawa, PolandAir Force Institute of Technology, 6 Księcia Bolesława str., 01-494 Warszawa, PolandDepartment of Mechanical Engineering, Bialystok Technical University, 45 Wiejska str., 15-333 Białystok, PolandGas turbines and their blades in particular might be damaged in the course of the aviation turbojet engine operation process. The degradation process of the blade microstructure is most evident from the change in the colour of its surface. This is assessed using the optoelectronic method. The article presents the concept of non-destructive methods, which are used to assess the degree of degradation of the alloy of a gas turbine blade. The proposed optoelectronic method is the basic method for the preliminary determination of color changes in the surface. Appropriate videoscopes or video-analyzers, capable of recording a test object in various electromagnetic wave ranges (infrared radiation, visible range), are used for this purpose. These preliminary results of the diagnosis make it possible to infer further studies of the blade. For accurate investigation of the state of the alloy microstructure, a non-destructive thermographic method (xenon flash pulsed thermography) was used. The results of studies of the degradation of the microstructure with the use of non-destructive methods were verified through the use of metallographic investigations. Appropriate metallographic specimens were created in order to recognize phase γ′ degradation (i.e., the phase strengthening the blade alloy). The results of the presented research allowed for an in-depth assessment of the degree of microstructure degradation of operated blades.http://www.mdpi.com/2075-4701/9/1/31Turbine bladedigital imageimpulse thermographymicrostructure degradation |
| spellingShingle | Mariusz Bogdan Józef Błachnio Artur Kułaszka Marcin Derlatka Assessing the Condition of Gas Turbine Rotor Blades with the Optoelectronic and Thermographic Methods Metals Turbine blade digital image impulse thermography microstructure degradation |
| title | Assessing the Condition of Gas Turbine Rotor Blades with the Optoelectronic and Thermographic Methods |
| title_full | Assessing the Condition of Gas Turbine Rotor Blades with the Optoelectronic and Thermographic Methods |
| title_fullStr | Assessing the Condition of Gas Turbine Rotor Blades with the Optoelectronic and Thermographic Methods |
| title_full_unstemmed | Assessing the Condition of Gas Turbine Rotor Blades with the Optoelectronic and Thermographic Methods |
| title_short | Assessing the Condition of Gas Turbine Rotor Blades with the Optoelectronic and Thermographic Methods |
| title_sort | assessing the condition of gas turbine rotor blades with the optoelectronic and thermographic methods |
| topic | Turbine blade digital image impulse thermography microstructure degradation |
| url | http://www.mdpi.com/2075-4701/9/1/31 |
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