An advanced rheological technique was used to estimate the dynamic material properties of pediatric porcine vitreous. Validation of the technique was performed with two simulant materials. Interconversion of time-dependent data to frequency-dependent data resulted in good approximation of storage and loss modulus for a primarily viscous material, but resulted in an erroneous loss modulus for a primarily elastic material. This can likely be overcome by utilizing free oscillations resulting from creep testing. Porcine storage modulus was significantly lower in older animals, but additional testing is necessary to completely characterize the material properties of pediatric vitreous over a wide range of frequencies.
- Bioengineering Division
A Rheological Technique for Extracting Dynamic Moduli From Creep Testing of Pediatric Porcine Vitreous
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Moran, P, & Coats, B. "A Rheological Technique for Extracting Dynamic Moduli From Creep Testing of Pediatric Porcine Vitreous." Proceedings of the ASME 2012 Summer Bioengineering Conference. ASME 2012 Summer Bioengineering Conference, Parts A and B. Fajardo, Puerto Rico, USA. June 20–23, 2012. pp. 827-828. ASME. https://doi.org/10.1115/SBC2012-80066
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