Damage Visualization of Submersible Navy Composites

The objective will be to develop a low cost visual approach capable of identifying damage in a submersible non-pressure hull composite structure, so that when damage occurs, the damaged area will have a distinct visual color. The proposed concept will enable visualization of damage present in fiber-reinforced polymer composite materials without any need of sophisticated instruments. The Phase I program will prove the feasibility of the proposed concept on a coupon size composite specimen and mechanically tested via quasi-static tension, fatigue, impact, bending and will demonstrate the ability to detect flaws through the specimen thickness. Test panels, measuring one square foot, of the new self-identification composites will be delivered to the sponsoring agency at the end of the Phase I option program. A final comprehensive report with results and conclusion will be submitted.