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High-Speed Optical Extensometer for Uniaxial Kolsky Bar Experiments

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Advancements in Optical Methods, Digital Image Correlation & Micro-and Nanomechanics, Volume 4 (SEM 2022)

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Abstract

This work studies the implementation of a high-speed linescan camera as a 1D high-speed optical extensometer in gathering strain histories during dynamic strain rate experiments. Aluminum 6061-T6 is tested in tension and compression and recorded using both the high-speed extensometer and a high-speed camera, and the resulting images are analyzed for sample strain and compared to strains found via 1D wave theory calculations. The results show good alignment between the two optical methods with the strain gathered from the wave calculations showing slightly higher strains in both tension and compression.

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Author information

Authors and Affiliations

  1. Standard Mechanics, LLC, Starkville, MS, USA

    Richard Leonard III

  2. Department of Mechanical Engineering, Mississippi State University, Starkville, MS, USA

    Wilburn Whittington

Authors
  1. Richard Leonard III
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  2. Wilburn Whittington
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Correspondence to Richard Leonard III .

Editor information

Editors and Affiliations

  1. National Chung Hsing University, Taichung, Taiwan

    Ming-Tzer Lin

  2. Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA

    Cosme Furlong

  3. National Applied Research Laboratories, Taiwan Instrument Technology Institute, Hsinchu, Taiwan

    Chi-Hung Hwang

  4. Texas A&M University, College Station, TX, USA

    Mohammad Naraghi

  5. National Institute of Standards & Technology, Gaithersburg, MD, USA

    Frank DelRio

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Leonard, R., Whittington, W. (2023). High-Speed Optical Extensometer for Uniaxial Kolsky Bar Experiments. In: Lin, MT., Furlong, C., Hwang, CH., Naraghi, M., DelRio, F. (eds) Advancements in Optical Methods, Digital Image Correlation & Micro-and Nanomechanics, Volume 4. SEM 2022. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-031-17471-1_6

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