Experimental results on the deformation and strength behavior of composites pertinent to design applications are reviewed. The effects of a large number of parameters, such as type of material, loading and environmental conditions and geometric parameters are discussed. The static and fatigue behavior of angle-ply laminates is described for six material systems and hybrids thereof. It is shown that boron fiber composites are the stiffest and glass fiber composites the most flexible; graphite/polyimide has the highest fatigue endurance and glass/epoxy the lowest; polyimide matrix is more suitable for high temperature applications whereas glass/epoxy composites degrade faster with increasing temperature. The behavior of composites with cutouts and notches is discussed extensively. Results are presented on the influence of material system, laminate construction, stacking sequence, cutout geometry, and notch size. Semi-empirical criteria exist in many cases for predicting notch size effects. Quasi-isotropic laminates, in general, are relatively insensitive to cutout geometry. Extensive experimental data are included.
|Original language||English (US)|
|Journal||Society of the Plastics Industry, Reinforced Plastics/Composites Institute, Annual Conference - Proceedings|
|State||Published - Dec 1 1979|
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