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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.20502 |
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Table of Contents:
- Gelatin is often used as an analog for studying soft and biological materials in order to understand the mechanics of behavior of biological tissue in events like traumatic brain injuries. The material properties of gelatin change with the ratio of water to gelatin powder used to make a given sample. Characterizing the relationship between this ratio and the material properties of gelatin is crucial to enable its use in mechanics experiments. In this work, compression tests were performed on a texture analyzer on samples which ranged from a 2:1 to 20:1 ratio of water to gelatin powder. In this range, instantaneous stiffnesses were well fit via power law in this ratio and decreased from 277 +/- 30 kPa to 4.34 +/- 0.64 kPa. The dominant (longest) timescales of the samples were well fit via a sigmoid function in this ratio and increased from 29.8 +/- 1.0 s to 621 +/- 92 s. The resulting ratio-property relationships offer a functional way to design gelatin samples for use in mechanics experiments.