Date of Award

5-5-2025

Degree Type

Capstone Project

First Advisor

Bahram Nassersharif

Abstract

This project investigates the mechanical behavior of neoprene rubber when subjected to gamma radiation, with the goal of evaluating its suitability as a component in radiation shielding systems for use in nuclear submarine environments. Specifically, neoprene sheets were layered between steel plates to simulate a composite barrier structure. The study involved exposing neoprene samples to varying levels of gamma radiation and conducting tensile and compression tests to analyze changes in mechanical properties. Stress-strain data were used to assess material stiffness and brittleness under both loading conditions. The results aim to determine whether neoprene maintains structural integrity in high-radiation settings, and if so, under what conditions it remains effective. The broader objective is to contribute to the design of durable, flexible, and efficient radiation barriers that enhance both safety and performance in naval applications.

After evaluating the physical properties of neoprene after it has been exposed to controlled levels of gamma radiation and improving our method of producing our samples, our tests yielded results that lined up with theoretical predictions. When exposed to approximately 12,000 Gray for varying durations, neoprene seems to become more brittle in tensile strength, while not significantly changing when tested compressively. These positive test results allow neoprene to enter the discussion for the design of radiation shields as a material that has slight gamma attenuation and protective seal capabilities.

Comments

Team Name: Team #2

Company Sponsor: General Dynamics Electric Boat

Document Reference: URI-MCE-402-002-2025

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