Abstract
High-speed camera measurements are increasingly being used in modal analysis to measure full-field response measurements using Digital image correlation and other Optical Flow methods. High-speed cameras can be very expensive, this is why this paper aims at measuring and identifying the full-field response using cheaper still-frame cameras, such as DSLR and mirrorless cameras. Using Spectral Optical Flow Imaging (SOFI) full-field operational shapes can be acquired using still-frame cameras. This study demonstrates a hybrid modal parameter identification of full-field mode shapes using an accelerometer and a DSLR camera, for responses far above the DSLR camera frame-rate (demonstrated up to 1 kHz).
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Acknowledgements
The authors acknowledge the partial financial support from the Slovenian Research Agency (research core funding No. P2-0263 and J2-6763).
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© 2019 The Society for Experimental Mechanics, Inc.
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Javh, J., Slavič, J., Boltežar, M. (2019). Full-Field Modal Analysis Using a DSLR Camera. In: Niezrecki, C., Baqersad, J. (eds) Structural Health Monitoring, Photogrammetry & DIC, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-74476-6_4
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DOI: https://doi.org/10.1007/978-3-319-74476-6_4
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