- Tytuł:
- Validation of selected presented method measured of length fatigue gap on compressor blades forming during resonant tests
- Autorzy:
-
Kuźniar, M.
Bednarz, A.
Lichoń, D.
Witek, L. - Powiązania:
- https://bibliotekanauki.pl/articles/243027.pdf
- Data publikacji:
- 2017
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
crack propagation
gap
thermovision
turbine engine
blades - Opis:
- In this work, the validation of selected presented method measured of length fatigue gap was shown. The article describes three methods of determining fatigue gaps. The object of the study was the first stage compressor blade from aircraft engine. Blades have defects on the leading edge. This defect on the blade (as a result of the resonance vibration) was the origin point of the fatigue gap. Two of the methods, fluorescent and thermovision, were optical. The fluorescent method was a direct measurement, whereas direct-indirect thermography. The last of the presented methods was an analytical method, showing an algorithm based on amplitude-frequency characteristics. The advantages and disadvantages of these methods were compared. As a result of the analysis performed by the algorithm, there were specified patterns defining the dependence of change in crack length depending on the asymmetry of AF characteristics. The accuracy of the following methods and the results obtained for chord length were determined. Thanks to such use, these results have a utilitarian meaning. Such a compilation allowed us to evaluate the usefulness of particular measurement methods. Proposed methods of measuring the length of fatigue crack are used in experimental studies. It is also possible to implement them for research conducted during the operation of an aircraft engine.
- Źródło:
-
Journal of KONES; 2017, 24, 3; 151-158
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł