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A Robust All-Fiber Push-Pull-Type Displacement Interferometer for Dynamic Deformation Experiments

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Abstract

A robust all-fiber push-pull-type displacement interferometer has been developed for dynamic deformation experiments and is described in this paper. This instrument includes a 90° optical hybrid module used to complement orthogonal coding of its fringe patterns. Hence, phase variation resulted by target displacement can be resolved point-by-point with the quadrature signals. The push-pull mode similar to the conventional VISAR (velocity interferometer system for any reflector) allows doubling output signals and cancelling noise. It has been successfully validated in gas-gun plate-impact experiments and issues in the data reduction procedure are discussed.

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ACKNOWLEDGMENTS

Special thanks are due to all technicians for their assistance with the gas-gun experiments. We acknowledge support from National Natural Science Foundation of China (no. 11672254), Applied Basic Research Programs of Science and Technology Department of Sichuan province (no. 2020YJ0479).

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Authors and Affiliations

  1. Institute for Advanced Study, Chengdu University, 610106, Chengdu, Sichuan, P R China

    Qiancheng Liu & Feng Zhao

  2. Institute for Advanced Materials Deformation and Damage from Multi-Scale, Chengdu University, 610106, Chengdu, Sichuan, P R China

    Qiancheng Liu & Feng Zhao

  3. School of Mechanical Engineering, Chengdu University, 610106, Chengdu, Sichuan, P R China

    Ping Xia

Authors
  1. Qiancheng Liu
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  2. Ping Xia
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  3. Feng Zhao
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Correspondence to Qiancheng Liu.

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Liu, Q., Xia, P. & Zhao, F. A Robust All-Fiber Push-Pull-Type Displacement Interferometer for Dynamic Deformation Experiments. Instrum Exp Tech 65, 103–108 (2022). https://doi.org/10.1134/S0020441222010067

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  • DOI: https://doi.org/10.1134/S0020441222010067

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