DIRECT LABORATORY FUNDED PROGRAM - RELIABILITY CRITERIA FOR ADVANCED STRUCTURAL MATERIALS/FAST CRAFT AND SHIPS

This report summarizes the accomplishments of a three-year program to explore the materials aspects of structural integrity technology for fast craft and ships. Fast craft and ships of the future will be the first Navy experience with fleet ships where high-strength materials will be used in the seawater environment. In contrast to the customary naval structural materials, which are quite 'forgiving', higher strength materials have an increased tendency for accelerated crack growth, environmental effects, and fracture; the result of this tendency will be increased safety and maintenance deficiencies in critical components until sufficient technology and experience in the correct use of such materials is gained. In the three-year program, the properties of current candidate structural materials and promising developmental materials were investigated, using general fracture mechanics methods, to evolve the technology necessary for their safe and economical use in the design of future ships. The emphasis of the program was on fracture, fatigue crack growth, and stress-corrosion cracking of metals in thin-section sizes; an additional part of the program concerned similar studies of high-strength composite materials and adhesive bonding.

• Corporate Authors:

  Naval Research Laboratory

  4555 Overlook Avenue, SW
  Washington, DC  United States  20375-5320
• Authors:
  • Judy, RWJ
• Publication Date: 1976-9

Media Info

• Pagination: 163 p.

Subject/Index Terms

• TRT Terms: Adhesion; Aluminum alloys; Composite materials; Corrosion; Cracking; Fatigue (Mechanics); Fatigue cracking; Fracture mechanics; High strength; High strength steel; Military vessels; Reliability; Seawater; Steel; Stress corrosion; Stress cracking; Stresses; Titanium alloys; Velocity
• Candidate Terms: Seawater corrosion
• Uncontrolled Terms: Crack propagation; High velocity
• Old TRIS Terms: Corrosion cracking
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00147246
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NRL-MR-3377 Final Rpt.
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM