Abstract
In this paper a new method for an experimental determination of the mass distribution of rotor blades is presented. This mass distribution measurement method is developed for the testing of on active twist blades, but it is applicable to the mass property determination of any type of rotating blade. Usually X-ray computer tomography (CT) is used for non-destructive inspection, such as to find voids in composite components. In this research CT is used to get information regarding the spatial distribution of mass in a rotor blade. The CT-analysis of an active twist rotor blade and the implemented determination of the mass distribution are presented in this paper. Image reconstruction due to X-ray computer tomography makes possible to obtain a cross-section image of the rotor blade. Each pixel of this image has a CT-Number which is proportional to the attenuation coefficient of the material forming the blade. Due to the fact that the attenuation of X-ray is characteristic for each material, it is theoretically possible to correlate CT-Numbers with material properties. This method is “quasi”-experimental because the attenuation coefficient for each pixel is experimentally determined and then densities are assigned to these pixels. Once that correlation is done, calculating mass properties such as total mass, mass per length, local center of mass and local moment of inertia for each cross section is possible.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
