Mississippi State University
Williams, Lakiesha N.
Olivier, Alicia Kathleen
Jones, Michael D.
Prabhu, Rajkumar Prabhu
Date of Degree
Graduate Thesis - Open Access
Master of Science
James Worth Bagley College of Engineering
Department of Agricultural and Biological Engineering
Traumatic brain injury (TBI) is a growing concern among American citizens and globally. This study proposes the use of a novel mechanical testing method for interrupting adult porcine brain tissue while under varying levels of high rate compressive strain to better understand the mechanical response of brain while under TBI inducing conditions. Testing was performed using a polymeric Split Hopkinson Pressure Bar (SHPB) along with customized attachments developed in-house to interrupt tissue samples at strain levels of 15%, 30%, and 40% while being compressed at strain rates of 650, 800, and 900 s-1. Following interruption, the samples were chemically fixed in preparation for histological processing. Microscopy techniques were used to examine the microstructure of the deformed tissue samples and measure the area fraction of their neural constituents. The combination of both the mechanical and microstructural responses of the brain tissue allowed for the development of a structure-property relationship.
Johnson, Haden Andrew, "Interrupted High-Rate Compression of Porcine Brain Tissue Utilizing the Split Hopkinson Pressure Bar Method" (2017). Theses and Dissertations. 2786.