NICOP - Survivability of marine composites and structures under impact and blast in extreme environments
Abstract
Survivability of marine composites and structures under impact and blast in extreme environments: Navy ships must operate safely in different regions of the globe. They must withstand and survive harsh environments and explosive threats. They must be light, have good corrosion resistance and reduced signatures. The research program deals with the problem of the survivability of composite structures subjected to extreme dynamic loads, such as blast and impact, while they are operating in extreme low temperature environments in seawater. In order to develop a basic insight into the problem and formulate material/structure concepts for the optimal design of ships operating under extreme conditions, an experimental campaign of impact tests on dry and seawater conditioned composite laminates will be performed and coupled problems of damage progression and evolution in multilayered, geometrically nonlinear systems subjected to thermo-mechanical loading will be formulated and solved. Understanding the failure mechanisms of composite materials under low velocity impact at concentrated and distributed loads, also accounting for the influence of different environmental conditions, is a basic requirement for the development of light and robust navy structures for safe navigation in the Artic Ocean. The research, with its focus on both experimental and theoretical work, will develop material and structure concepts useful for the formulation of damage control and mitigation strategies to improve survivability of navy structures in extreme conditions.b. Navy ships must operate safely in different regions of the globe. They must withstand and survive harsh environments and explosive threats. They must be light, have good corrosion resistance and reduced signatures. The research program deals with the problem of the survivability of composite structures subjected to extreme dynamic loads, such as blast and impact, while they are operating in extreme low temperature environments in seawater.c. This is coordinated and cofounded by Dr. Yapa Rajapakse, Code 332. Other interested in this project are NSWC-Carderock and NUWC-Newport.4. The project will result in a report, publications and test data. These contribute to the knowledge of the composite behavior under extreme load conditions and extreme cold temperatures, that are useful for future naval marine vehicles.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 23, 2016
- Source ID
- N629091612220
Entities
People
- Valentina Lopresto
Organizations
- Office of Naval Research
- United States Navy