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Journal of Reinforced Plastics and Composites
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Failure in Composite Angle Structures Part I: Initial Failure

C.T. Sun

Composite Materials Laboratory School of Aeronautics and Astronautics Purdue University West Lafayette, Indiana 47907

S.R. Kelly

Composite Materials Laboratory School of Aeronautics and Astronautics Purdue University West Lafayette, Indiana 47907

Failure in composite angle structures was studied experimentally and analyzed using Hill and an augmental Hill-Tsai failure criteria. In general, there were two possible failure modes, i.e., initial transverse matrix cracking due to bending stress, and final delamina tion due to through-the-thickness normal stress in the curved region. Depending on the layup, some laminates could fail in delamination without experiencing transverse matrix cracking. The 3-D Hill failure criterion was found excellent in predicting failure of this type of composite structure.

Journal of Reinforced Plastics and Composites, Vol. 7, No. 3, 220-232 (1988)
DOI: 10.1177/073168448800700302


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M. R. Wisnom
3-D Finite Element Analysis of Curved Beams in Bending
Journal of Composite Materials, July 1, 1996; 30(11): 1178 - 1190.
[Abstract]