High-strain rate Characterization of Biological Tissue via Inertial Microcavitation Rheometry
Abstract
Accurate predictions of human soft tissue response to mechanical loading requires accurate resolution of its underlying properties at the given loading rate. While determination of low, quasi-static strain rate properties is relatively straightforward and established, high rate material characterization for blast, ballistic and blunt exposure are much more challenging to acquire and are therefore still largely lacking in the literature. To date, many of the material properties featured in human impact and injury simulations were derived from either low-rate measurements or a very limited set of high-rate data, which limits their innate predictive power and accuracy. To address this challenge, the current proposal utilizes a recently developed inertial microcavitation rheometry (IMR) technique that has shown to be minimally invasive, accurate and capable of extracting high loading rate material properties from soft polymer and tissue materials. The application featured herein is the mechanical characterization of the highrate mechanical properties of swine brain tissue at blunt, ballistic and blast loading rates.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 02, 2021
- Source ID
- N000142112034
Entities
People
- Christian Franck
Organizations
- Office of Naval Research
- United States Navy
- University of Wisconsin System