Lamination residual stresses in composite laminates are produced during curing as a result of the anisotropic thermal deformations of the various plies. The extent of relaxation of these stresses was investigated in laminates of six composite systems. Several means of evaluation of stress relaxation were used. An upper limit to the actual amount of residual stress relaxation was obtained by measuring stress relaxation in 90-degree unidirectional laminates. An indirect evaluation was made by determining the elastic and strength properties of angle-ply laminates as a function of time after curing.
|Original language||English (US)|
|Number of pages||14|
|Journal||[No source information available]|
|State||Published - Jan 1 1976|
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