Date of Award

Summer 8-2-2024

Degree Type

Thesis

Degree Name

Master of Science in General Engineering

Department

Mechanical Engineering

Committee Chair

Jack Skinner

First Advisor

Jessica Andriolo

Second Advisor

Blaine Berrington

Abstract

Self-healing materials are repairable and extend product lifetimes but are limited in application due to their mechanical properties such as low yield strength. Here, the mechanical properties of an elastomeric polymer composite containing aramid nanofiber are examined. These studies provided an economically feasible foundation to understand the doping concentration and resultant mechanical properties that would result should aramid nanofibers be used to reinforce a self-healing polymer that requires complex synthesis methods and expensive reactants. The elastomeric polymer used was polycaprolactone containing various weight percent aramid nanofiber. Quasi-static mechanical testing of these samples was performed following ASTM standardized tests for tension, compression, and shear. Dynamic mechanical testing of these samples was performed using a split-Hopkinson pressure bar system. The full scope of these tests provided a strong background towards the mechanical performance of polycaprolactone composite material. Similarly, a self-healing polymer was investigated that was reported to have elastomeric polymer classifications and comparable mechanical properties to polycaprolactone. Results from this work will be used to provide flexible, reinforced, self-healing composites with enhanced strength and sustainability.

Download

Share

COinS