Abstract
We developed a dynamic inflation experiment to measure the elastodynamic behavior of soft materials. In the experiments, a shock tube was used to apply dynamic pressurization to thin polydimethylsiloxane specimens. Two high-speed cameras were used to image the deforming specimen and three-dimensional digital image correlation was used to determine the three-dimensional displacement field of the specimen surface. We applied dynamic Kirchhoff plate bending theory and concepts from structural dynamics to derive a mathematical expression for the dynamic Young’s modulus. The phase velocity of the initial transverse wave propagation response and the vibration frequency of the long-time response were captured during our experiments and were applied in the calculation of the dynamic Young’s modulus.
Original language | English (US) |
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Pages (from-to) | 759-769 |
Number of pages | 11 |
Journal | Experimental Mechanics |
Volume | 56 |
Issue number | 5 |
DOIs | |
State | Published - Jun 1 2016 |
Keywords
- Dynamic test
- Inflation test
- Polydimethylsiloxane
- Shock tube
- Sylgard 184
- Thin plate bending
ASJC Scopus subject areas
- Aerospace Engineering
- Mechanics of Materials
- Mechanical Engineering