Materials & Structures Engineering

DDL OMNI has demonstrated expertise in the development and application of metallic and non-metallic materials for military and commercial systems. Our personnel are highly experienced in ship, submarine, and amphibious/ground vehicle design and engineering, from concept through construction and testing.

The DDL OMNI materials engineering team includes experts in metals and welding, marine corrosion prevention and control, and composites. Our capabilities include fatigue and fracture analyses, structural integrity assessments from a metals perspective, computer-aided design (CAD), solid modeling, material selection for complex marine systems, corrosion test planning, and testing.

DDL OMNI has been a major contributor to the resolution of significant Naval structural integrity issues, and in the development and certification of new material technologies for U.S. Navy ship and submarine systems. The direct impact of our team includes—

  • Resolution of hull weld cracking during construction of USS Seawolf (SSN 21).
  • Development and certification of under-matched strength welding for reduced cost welding of Virginia Class submarine pressure hull structures.
  • Structural integrity assessment of high strength steel and alloy titanium submarine pressure boundary components.
  • HSLA-65 Steel Structural Certification Program for CVN weight reduction.

Our high-quality materials engineering services have resulted in significant savings in cost, schedule, and performance for our U.S. Navy customers.

DDL OMNI also provides materials engineering consultation and development support to private industry, including—

  • Engineering assessment that identified causes and presented options for eliminating tank level indicator corrosion in saltwater compensated fuel tanks.
  • Engineering consultation for testing to resolve corrosion on marine grade aluminum alloys.
  • Redesign a tactical mobile radar platform pedestal using composites to reduce structural weight by up to 15 percent.