Abstract
In modern data acquisition a constantly growing number of applications using technically advanced image processing systems has been observed in recent years. The work presented proves, that it is possible to use standard webcams combined with an innovative lighting concept to precisely measure displacements of high frequency structural oscillations. By means of stroboscopic light, the actual frequency of a periodic high frequency oscillation is shifted to the low detection rate of the cameras applied. Object or surface deformations are measured and visualized by well-established 3D digital image correlation procedures. The excellent performance of the proposed system is confirmed by a wide range of experimental studies. All results indicate that this innovative system is a perfect supplement to traditional modal analysis measurement systems, particularly in the context of teaching vibrations.
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© 2016 The Society for Experimental Mechanics, Inc.
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Hochrainer, M.J. (2016). A Cost Effective DIC System for Measuring Structural Vibrations. In: De Clerck, J., Epp, D. (eds) Rotating Machinery, Hybrid Test Methods, Vibro-Acoustics & Laser Vibrometry, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-30084-9_12
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DOI: https://doi.org/10.1007/978-3-319-30084-9_12
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