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Title: Shear wave measurements of a gelatin’s Young’s modulus
Authors: Pansino, Stephen
Taisne, Benoit
Keywords: Social sciences::Geography
Issue Date: 2020
Source: Pansino, S., & Taisne, B. (2020). Shear wave measurements of a gelatin’s Young’s modulus. Frontiers in Earth Science, 8, 171-. doi:10.3389/feart.2020.00171
Project: NRF2015−NRF−ISF001−2437 
Journal: Frontiers in Earth Science 
Abstract: Gelatin is a commonly used material for analog experiments in geophysics, investigating fluid-filled fracture propagation (e.g., magmatic dikes), as well as fault slip. Quantification of its physical properties, such as the Young’s modulus, is important for scaling experimental results to nature. Traditional methods to do so are either time consuming or destructive and cannot be performed in situ. We present an optical measurement technique, using shear waves. Polarizing filters enable visualization of the deviatoric stresses in a block of gelatin, so shear wave propagation can be observed. We demonstrate how the wave velocity can be measured and related to the Young’s modulus, show how the results are comparable to another methodology and discuss processing techniques that maximize the measurement precision. This methodology is useful for experimentalist, as it is simple to implement into a laboratory setting, can make precise, time-efficient estimates of the material strength and additionally is non-destructive and can be performed in situ.
ISSN: 2296-6463
DOI: 10.3389/feart.2020.00171
DOI (Related Dataset): 10.21979/N9/35QSJA
Rights: © 2020 Pansino and Taisne. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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