Nondestructive Testing of CubSat Satellite Body Using Laser Vibrometry
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The high reliability of modern 3D printing technologies makes it possible to create structural elements for aerospace and rocket industry products. Currently, the team of authors are developing a system for designing and additive manufacturing of composite and polymer structures for high-tech applications. In this paper, we studied the body of a Tomsk-TPU-120 CubSat satellite, the first Russian spacecraft to contain additive manufactured elements. Device quality control was carried out using resonant ultrasonic stimulation in conjunction with the use of scanning Doppler laser vibrometry, as well as experimental modal analysis. The testing results made it possible to reveal a defect at the butt end surface of the satellite body by analyzing the amplitude-frequency characteristic of surface vibrations. Experimental vibration-scanning data were used to verify a mathematical model developed using the ANSYS software.
Keywords:CubSat satellite 3D printing modal analysis additive technologies scanning Doppler laser vibrometry local defect resonance
The methodolody of resonance ultrasonic vibrometry and experimental results (section 3.2) was done at Tomsk Polytechnic University by D.A. Derusova, V.Yu. Shpil’noi and supported by Russian Science Foundation under grant no. 18-79-00029. Introduction, Section 1 and Section 2 of this article were done with the support of the Tomsk Polytechnic University Competitiveness Enhancement Program. Experimental results (section 3.1) was done by the Fundamental Research Program of the State Academies of Sciences for 2013-2020, line of research III.23.
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