Assessment of used turbine blades on and beneath the surface for product regeneration: Generation of a damage model based on reflection, geometry measurement and thermography

Author

Kraus, M. ; Frackowiak, W. ; Posch, Alfred ; Kastner, Margit ; Reimche, W. ; Reithmeier, Eduard ; Maier, H.J.

Author_Institution

Inst. of Meas. & Autom. Control, Leibniz Univ. Hannover, Hannover, Germany

fYear

2013

fDate

12-16 May 2013

Firstpage

1

Lastpage

1

Abstract

A camera with a directional illumination system and a thermography camera with 50 mm optics with inductive excitation system are used in order to gather hints for defects on the surface. Using the directional illumination system each picture with a different illumination angle is a sample of the surfaces reflection distribution of each pixel. Deviation of the surface microstructure directly changes the reflection distribution and points to possible damages.

Keywords

blades; cameras; crystal defects; image sensors; infrared imaging; turbines; defects; directional illumination system; inductive excitation system; reflection; surface microstructure; thermography; used turbine blades; Cameras; Geometry; Lighting; Microstructure; Sensors; Surface cracks;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference

Conference_Location

Munich

Print_ISBN

978-1-4799-0593-5

Type

conf

DOI

10.1109/CLEOE-IQEC.2013.6801205

Filename

6801205