Experimental strain-based tissue damage analysis to model impact and blast-induced traumatic brain injury scenarios
Abstract
Traumatic Brain Injury (TBI) resulting from a blast or impact is an issue of broad contemporary concern given the link between this injury and neurodegenerative diseases with devastating health outcomes. In recent years, multiple advanced tissue-simulating headforms with elastomeric brain surrogates were used to investigate bTBI. The full potential of these tissuesimulating headforms has yet to be achieved as the data that they generate are both discrete in nature and only indirectly linked to the leading injury mechanisms involved in bTBI. A proper analysis of the brain response requires a full-field spatially-resolved approach to measurement that enables localized effects to be resolved. The proposed study will integrate a strain sensor, developed at Carleton University, to specifically diagnose the deviatoric strain component of the response of a tissue-simulating brain surrogate under impact and blast loading for comparison to ARL surrogate head models. The data generated in this study will help vastly improve current bTBI head modeling efforts by providing much-needed datasets for validation. Introducing ex vivo tissues into the headform brain surrogate will enable us to link there strain fields directly to tissue/cellular level damage thresholds under impact and blast loading. The project includes elements of diagnostic development and integration, investigation of deviatoric strain localization, tissue strain mapping with injury predictions, and data collection under blast wave loading.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 10, 2019
- Source ID
- W911NF1720222
Entities
People
- Oren E. Petel
Organizations
- Army Contracting Command
- Carleton University
- United States Army