Concept of Computer-Aided Assessment of the Technical Condition of Operated Gas Turbine Vanes

Polish Maritime Research

卷:25

Błachnio Józef¹  Derlatka Marcin²  Bogdan Mariusz² 

[1] Air Force Institute of Technology, Poland;

[2] Bialystok Technical University, Poland;

关键词: gas turbine;    condition assessment;    vanes (blades);    coating;    surface colour;   

DOI  :  10.2478/pomr-2018-0101

来源: DOAJ

【 摘 要 】

The article presents a multi-stage algorithm for automatic (without any human, user – diagnostician intervention) detection of vanes-blades (technical objects) and their surfaces on a digital image, combined with color analysis, aimed at determining the technical condition of the tested turbine elements. The images recorded with the use of a camera, containing previously dismantled from the turbine operated stator vanes, were used as the exemplary analysis material. The paper presents the algorithm for the detection of the vanes’ airfoil surfaces with the impact of the applied techniques and methods of image processing and analysis on the final result (software localization of the vane’s trailing and leading edge), Then, the obtained image data, including the structural changes of both the vane’s coating and material (metallographic testing) were correlated with the surface colour scheme (colour segmentation based on the YCbrCr colour space model). Thanks to this approach, areas on the surface of the blade were distinguished, characteristic for proper, overheated and transient condition.

【 授权许可】

Unknown