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.
Direct Laboratory Funded Program - Reliability Criteria for Advanced Structural Materials/Fast Craft and Ships
1976
163 pages
Report
No indication
English
Marine Engineering , Composite Materials , Iron & Iron Alloys , Nonferrous Metals & Alloys , Naval vessels , Composite materials , Steel , Aluminum alloys , Titanium alloys , High reliability , High velocity , High strength , Crack propagation , Fracture(Mechanics) , Fatigue(Mechanics) , Stress corrosion , Adhesive bonding , Sea water corrosion , High performance ships , Steel HY-180 , Steel 17-4 PH , Steel 15-5 PH , Construction materials
Amphibious craft repair ships-ARL
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