ADVANCED SIGNATURE MODELING: SIMULATION AND EXPERIMENT
Abstract
The objective of the proposed research is multifold. The first is to provide the capability to efficiently and accurately predict the underwater electromagnetic signature of naval vessels due to motion within the Earth~s magnetic field, dynamic stresses encountered at sea, and on-board degaussing coils. The second objective is to enable the use of this capability to provide efficient and effective means of designing degaussing systems, with the ultimate goal of eliminating the need of costly and timely physical scale models. The third objective is to provide the means to predict, in situ, a ship~s magnetic state usingexternal magnetometers combined with the proposed simulation tools. The fourth objective is to predict the electric signature of ships through the development of new algorithms capable of calculating the electric fields produced by corrosion induced currents and on-board cathodic protection system when the local seawater can be considered as a stratified medium. These objectives will be enhanced by the further development of physics based models of the non-linear hysteretic magnetic and magnetostrictive properties of ferromagnetic steels over broad ranges of applied fields and elastic stresses.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 26, 2019
- Source ID
- N000141912729
Entities
People
- Stephen Gedney
Organizations
- Office of Naval Research
- Regents of the University of Colorado
- United States Navy