Volume 17, Issue 1 (January 1995)

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

    CODEN: CTROAD

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    Abstract

    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:

    Jayaraman, N
    Graduate student and professor, University of Cincinnati, Cincinnati, OH

    Rangaswamy, P
    Graduate student and professor, University of Cincinnati, Cincinnati, OH


    Stock #: CTR10512J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10512J

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    Author
    Title Residual Stresses in SCS-6/Beta-21S Composites
    Symposium , 0000-00-00
    Committee D30