Influence of Sampling Rate on Reproducibility and Accuracy of Miniature Kolsky Bar Experiments
This study introduces a rigorous methodology for improving the reproducibility and accuracy of miniature Kolsky bar (Split Hopkinson Pressure Bar) experiments by optimizing data sampling rates. Through a combination of finite element modeling and statistical analysis, the work identifies a minimum 400 kHz capture rate necessary to accurately characterize high-frequency stress waves in a 3.16 mm Kolsky bar system. Results show significantly improved consistency and reduced standard deviation in measured stress profiles, paving the way for more reliable material testing at high strain rates.
This article is published in the Journal of Verification, Validation and Uncertainty Quantification, Volume 9, March 2024, under the American Society of Mechanical Engineers (ASME). The content is distributed under the Creative Commons Attribution (CC BY 4.0) license, allowing unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
DOI: 10.1115/1.4065207
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| Work Title | Influence of Sampling Rate on Reproducibility and Accuracy of Miniature Kolsky Bar Experiments |
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| License | In Copyright (Rights Reserved) |
| Work Type | Article |
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| Publication Date | April 15, 2024 |
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| Deposited | April 21, 2025 |
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