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1. Introduction
As developments continue to be made in high-throughput spall testing it has become increasingly difficult to keep up with the data analysis. Future laser-driven flyer systems are currently being built that will soon make it altogether impossible to hand analyze all of the data with existing programs. ALPSS is a program that is designed to automatically process PDV spall signals and will allow us to keep up with high-throughput experiments. ALPSS is also designed to function as a standalone spall signal processing program. All potential inputs are located within a single function, making it easy to adjust parameters and quickly assess results. More details can be found in the paper here.
PDV stands for photonic Doppler velocimetry, which is a method of measuring the velocity of a reflective moving surface. It is essentially a fiber optics version of a Michelson interferometer and allows the accurate capture of very high velocities (hundreds to thousands of meters per second) on very short time scales (nanoseconds to microseconds). Since its development it has quickly become one of the most popular methods for measurements involving shock loading, hypervelocity impact, and other extreme conditions. For more information users can refer to the recent review by Dan Dolan.
Spall failure occurs when two release waves from an initial shock intersect inside a target and generate a region of extreme tensile stress. This causes the target material to fail in tension either by void nucleation or brittle fracture. For more information users can refer to papers by Mallick et al., G. I. Kanel, and the textbook Spall Fracture.
For use in published works, ALPSS can be cited from its original paper Automated Analysis of Photonic Doppler Velocimetry Spall Signals. J. dynamic behavior mater. (2024). https://doi.org/10.1007/s40870-024-00427-9 or with the following bibtex
@article{Diamond_automated_2024,
title = {Automated Analysis of Photonic Doppler Velocimetry Spall Signals},
ISSN = {2199-7454},
url = {http://dx.doi.org/10.1007/s40870-024-00427-9},
DOI = {10.1007/s40870-024-00427-9},
journal = {Journal of Dynamic Behavior of Materials},
publisher = {Springer Science and Business Media LLC},
author = {Diamond, J. M. and Ramesh, K. T.},
year = {2024},
month = jun
}
The repository for v1.2.4 can be cited using its DOI 10.5281/zenodo.11266560 or with the following bibtex.
@software{Diamond_ALPSS_2024,
author = {Diamond, Jacob M. and Ramesh, K.T.},
doi = {10.5281/zenodo.11266560},
month = {05},
title = {{ALPSS}},
url = {https://github.com/Jake-Diamond-9/ALPSS},
version = {1.2.4},
year = {2024}
}
GNU General Public License v3.0
The authors would like to acknowledge Chris DiMarco, Velat Killic, Debjoy Mallcik, Maggie Eminizer, David Elbert, Mark Foster, and Samuel Salander for their many helpful conversations and advice. Research was sponsored by the Army Research Laboratory and was accomplished under Cooperative Agreement Number W911NF-22-2-0014. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Office or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein.
Users that find bugs or have any suggestions can contact Jake Diamond at jdiamo15@jhu.edu. All comments are welcome.