Journal Published Online: 01 January 1995
Volume 17, Issue 1

Residual Stresses in SCS-6/Beta-21S Composites



Residual stress profiles were determined using X-ray diffraction (XRD) procedures in SCS-6/Beta-21S composites in unidirectional [0]4, cross-ply [0/90]s, and quasi-isotropic [0/±45/90]s lay-ups by sequentially electropolishing matrix layers off the outer surface. These experimental results were compared with the finite element model (FEM) calculations. Generally, the longitudinal stresses in the unidirectional [0]4 composite was almost twice the transverse stresses, while for the cross-ply [0/90]s, composite, the logitudinal and the transverse stresses were similar in magnitude. The stress profile for the quasi-isotropic [0/±45/90]s lay-up were intermediate between the unidirectional and cross-ply composites. These results show the strong influence of the underlying ply on the residual stresses in the outer ply. A 90° ply has greater influence than a 45° ply on the outer 0° ply of the composite.

Author Information

Rangaswamy, P
Los Alamos National Laboratory, Los Alamos, NM
Jayaraman, N
Los Alamos National Laboratory, Los Alamos, NM
Pages: 7
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: CTR10512J
ISSN: 0884-6804
DOI: 10.1520/CTR10512J