Abstract
Digital speckle correlation techniques have been successfully proven to be an accurate displacement analysis tool for a wide range of applications. With the use of two cameras, three dimensional measurements of contours and displacements can be carried out. With rapid new developments in the field of digital imaging and computer technology, the capability of this technique is increasing, opening further applications in the fields of material testing, fracture mechanics and vibration analysis. The high resolution of the deformation measurements in space and time can accurately determines the absolute position and displacements of objects, even if they display high amplitudes and large rigid body movements. The absolute resolution depends on the field of view and is scalable. Calibration of the optical setup is a crucial point which will be discussed in detail. Examples are described including the analysis of a harmonic vibration and transient events from real industrial applications showing the interaction of large accelerations and complex rigid body motions.
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© 2013 The Society for Experimental Mechanics, Inc.
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Siebert, T., Crompton, M.J. (2013). Application of High Speed Digital Image Correlation for Vibration Mode Shape Analysis. In: Proulx, T. (eds) Application of Imaging Techniques to Mechanics of Materials and Structures, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9796-8_37
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DOI: https://doi.org/10.1007/978-1-4419-9796-8_37
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