Abstract
We present details on the design and validation of a heterodyne diffracted beam photonic Doppler velocimeter (DPDV) for pressure-shear plate impact (PSPI) shock experiments. The fiber optic interferometer collects symmetrically diffracted 1st order beams produced by a thin, specular, metallic grating deposited on the rear surface of the impacted target plate and separately interferes each of these beams with a reference beam of a slightly increased wavelength. The resulting interference signals contain an upshifted carrier signal with a constant frequency at zero particle velocity. Signal frequency content in recorded waveforms from PSPI experiments is extracted using a moving-window DFT algorithm and then linearly combined in a post- processing step to decouple and extract the normal and transverse velocity history of the rear target surface. The 0th order (normally reflected) beam can also be interfered in a separate heterodyne PDV configuration to obtain an additional, independent measurement of the normal particle velocity. An overview of the DPDV configuration is presented along with a discussion of the interferometer sensitivities to transverse and normal particle velocities. Results from a normal impact experiment conducted on Y-cut quartz are presented as experimental validation of the technique.
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References
Kim, K., Clifton, R.J., Kumar, P.: A combined normal- and transverse-displacement interferometer with an application to impact of Y-cut quartz. J. Appl. Phys. 48, 4132–4139 (1977)
Chhabildas, L.C., Sutherland, H.J., Asay, J.R.: A velocity interferometer technique to determine shear-wave particle velocity in shock-loaded solids. J. Appl. Phys. 50, 5196 (1979)
Zuanetti, B., Wang, T., Prakash, V.: A compact fiber optics-based heterodyne combined normal and transverse displacement interferometer. Rev. Sci. Instrum. 88, 033108 (2017)
Dolan, D.H.: Accuracy and precision in photonic Doppler velocimetry. Rev. Sci. Instrum. 81, 053905 (2010)
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© 2019 The Society for Experimental Mechanics, Inc.
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Mello, M., Kettenbeil, C., Bischann, M., Lovinger, Z., Ravichandran, G. (2019). Heterodyne Diffracted Beam Photonic Doppler Velocimeter (DPDV) for Pressure-Shear Shock Experiments. In: Kimberley, J., Lamberson, L., Mates, S. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95089-1_10
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DOI: https://doi.org/10.1007/978-3-319-95089-1_10
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