Three-dimensional photoelastic analysis using the '%'stress- freezing'%' technique was conducted to determine the stress distributions in the matrix of a unidirectionally fiber-reinforced composite model subjected to matrix shrinkage and normal transverse loading. The model, consisting of a square array of polycarbonate rods in an epoxy matrix, simulated a boron filament reinforced plastic composite with a fiber volume fraction of 0. 50 at the critical temperature of the matrix epoxy. Results are presented in dimensionless form by dividing the stresses by the average stress through the section. A comparison with theoretical results for a boron-epoxy composite shows excellent agreement, although Poisson's ratio of the model matrix is appreciably different from that of the prototype.
|Original language||English (US)|
|Journal||[No source information available]|
|State||Published - Jan 1 1968|
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