深海潜水調査船用浮力材 (第1報)

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There is an ever increasing need for man to descend deeper in the ocean, for there are sources of food, minerals, oil and etc. and the investigation to realize the efficient submersible that can descend to the depths of 6,000m has been conducted in various fields of technology. One of the major factors limiting the rapid exploration and exploitation of the undersea has been the materials problem, especially the buoyancy material to achieve neutral buoyancy at great depth. As the buoyancy material, gasoline was used in "Trieste" and "Archimedes". But it has several inherent disadvantages such as high compressibility, flammability and high density and it is a key factor in building more small and maneuverable deep submersibles to develop a more efficient floatation system. For this purpose, syntactic foam, hollow glass microsphere embeded in resin matrix, is developed. This material has great advantages compared to the other candidates and is now produced for the submersibles of operating depth 2,000 to 3,000m, but not for 6,000m submersible use. We have been engaged in the development of higher strength and lower density syntactic foam available for 6,000m submersible and some experiments were done to have more information about deep sea application. As the results, we reached to the conclusion that we can produce the syntactic foam suitable for 6,000m submersible and not only for deep submersible application, foams of various strength and properties can be produced according to it's operating depth. Succeeding to the first stage investigation reported here, we are now engaged in the farther development of this material to ascertain it's properties. This will be reported on another occasion.
社団法人日本船舶海洋工学会の論文
1971-06-30

深海潜水調査船用浮力材 (第1報)

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