Development of New Generation Earth Covered Magazine (ECM) Structural Design Using Composite Materials

A novel, lightweight, energy-absorbing, durable, modular, and strong earth covered magazine (ECM) (i.e., the Lightweight Foam Composite (LFC) ECM) is proposed to be developed as an alternative option for the next generation of ECMs.  As proposed, the LFC ECM will enable construction and maintenance efficiencies while still achieving the same level of protection afforded by existing ECMs.  Existing ECM designs are dominated by reinforced concrete solutions that engender significant potential debris hazards and construction costs due to their heavy nature.  As part of this proposed Phase II effort, the Project Team aims to develop a prototype LFC ECM through high-fidelity physics-based (HFPB) analyses and proof-of-concept testing.  The effort is to be performed over three years.  In the Base year, dynamic material characterization testing and HFPB calculations will be used to optimize the LFC ECM typical roof panel.  This optimized roof panel will then be manufactured and tested via quasi-static bending tests.  In the Option 1 year, dynamic drop hammer tests will be performed on the optimized LFC ECM roof panel and 95% construction drawings and specifications for an LFC ECM will be generated.  In the Option 2 year, test planning for a full-scale blast demonstration test will be performed.