Electronic Theses and Dissertations

Date of Award


Document Type


Degree Name

Ph.D. in Engineering Science

First Advisor

Tejas Pandya

Second Advisor

Arunachalam Raj Rajendran

Third Advisor

Tyrus McCarty


University of Mississippi

Relational Format



Wood-based bio-composites are becoming increasingly popular due to their low cost, biodegradability, eco-friendliness, relatively robust mechanical properties, and environmental and sustainability benefits. In addition, over 300 million scrap tires are generated in the United States each year. A waste tire rubber aggregate used as supplementary material in wood composites can promote energy absorption and contribute to environmental sustainability. There has been a growing interest in discovering ways to incorporate rubber tire waste into wood-based materials. In this study, micronized rubber powder (MRP) was incorporated into a wood-based bio-composite made of southern yellow pine (SYP) fibers, to determine how it affects the dynamic and damping behavior of the bio-composite. Those structures that are capable of absorbing energy efficiently will disperse and dissipate intense pressure pulses and shield anything behind them (Wang & Shukla, 2010).The study investigates four different types of wood-based bio-composites made from varying fractions of SYP and MRP. The experimental analysis was performed using a Universal Testing Machine, a Low-velocity impact machine, a Split Hopkinson Pressure Bar (SHPB), a blast tube, and a hammer excitation method. The dynamic and damping properties of four different bio-composites were evaluated. The dynamic behavior was modeled using ABAQUS (Dynamic explicit). It can be used to improve our understanding of the impact hazard mitigation performance of wood-based bio-composites and implement them in the current structure design.


Mechanical Engineering

Available for download on Friday, February 07, 2025