ガラスバルーン─レジン複合材 (Syntactic Foam) の機械的性質に及ぼす静水圧力の影響

概要

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The effect of hydrostatic pressure on the mechanical behavior of a syntactic foam which is composed of glass micro-spheres embeded in epoxy resin matrix was investigated up to the high pressure of 3 000 kg/cm^2. The behavior of the syntactic foam tested under hydrostatic pressure was typically brittle, although the matrix material behaved in a ductile manner. The tensile strength increased linearly with the increase of pressure. The increasing rate of the tensile strength with pressure was larger than that for the matrix material. However, a transition of the mechanical properties occurred around the pressure of 1 500 kg/cm^2 and above this pressure the tensile strength dropped and the elongation value increased discontinuously. This transition phenomenon was considered to be related to the behavior of syntactic foam under hydrostatic pressure were not altered by the change in volume fraction of the micro-spheres, although the transition pressure was affected a little.Penetration effect of the pressure medium used was small on the mechanical properties of the syntactic foam.
社団法人日本材料学会の論文
1973-06-15