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TECHNICAL PAPERS

The Initial Post-buckling Behavior of Face-Sheet Delaminations in Sandwich Composites

[+] Author and Article Information
G. A. Kardomateas, H. Huang

School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0150

J. Appl. Mech 70(2), 191-199 (Mar 27, 2003) (9 pages) doi:10.1115/1.1532320 History: Received September 26, 2000; Revised May 08, 2001; Online March 27, 2003
Copyright © 2003 by ASME
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References

Yin,  W. L., Sallam,  S., and Simitses,  G. J., 1986, “Ultimate Axial Load Capacity of a Delaminated Beam-Plate,” AIAA J., 24(1), pp. 123–128.
Simitses,  G. J., Sallam,  S., and Yin,  W. L., 1985, “Effect of Delamination on Axially Loaded Homogeneous Laminated Plates,” AIAA J., 23, pp. 1437–1444.
Chai,  H., Babcock,  C. D., and Knauss,  W. G., 1981, “One Dimensional Modeling of Failure in Laminated Plates by Delamination Buckling,” Int. J. Solids Struct., 17(11), pp. 1069–1083.
Whitcomb, J. D., 1981, “Finite Element Analysis of Instability-Related Delamination Growth,” NASA TM 81964, Mar.
Shivakumar,  K. N., and Whitcomb,  J. D., 1985, “Buckling of a Sublaminate in a Quasi-Isotropic Composite Laminate,” J. Compos. Mater., 19, Jan., pp. 2–18.
Kardomateas,  G. A., 1990, “Postbuckling Characteristics in Delaminated Kevlar/Epoxy Laminates: An Experimental Study,” J. Compos. Technol. Res., 12(2), pp. 85–90.
Kardomateas,  G. A., 1993, “The Initial Postbuckling and Growth Behavior of Internal Delaminations in Composite Plates,” ASME J. Appl. Mech., 60, pp. 903–910.
Kardomateas,  G. A., Pelegri,  A. A., and Malik,  B., 1995, “Growth of Internal Delaminations Under Cyclic Compression in Composite Plates,” J. Mech. Phys. Solids, 43(6), pp. 847–868.
Kant,  T., and Patil,  H. S., 1991, “Buckling Load of Sandwich Columns With a Higher-Order Theory,” J. Reinf. Plast. Compos., 10(1), pp. 102–109.
Hunt,  G. E., and Da Silva,  L. S., 1990, “Interaction Bending Behavior of Sandwich Beams,” ASME J. Appl. Mech., 57, pp. 189–196.
Hunt,  G. E., and Da Silva,  L. S., 1990, “Interactive Buckling in Sandwich Structures With Core Orthotropy,” Int. J. Mech. Struct. Mech., 18 (3), pp. 353–372.
Frostig,  Y., 1992, “Behavior of Delaminated Sandwich Beams With Transversely Flexible Core—High Order Theory,” Composite Structures, 20 , pp. 1–16.
Frostig,  Y., and Baruch,  M., 1993, “Buckling of Simply-Supported Sandwich Beams With Transversely Flexible Core—A High Order Theory,” J. Eng. Mech. Div., 119(5), pp. 955–972.
Rajapakse Y. D. S., Kardomateas G. A., and Birman V., eds, 2000, Mechanics of Sandwich Structures, AD-Vol. 62/AMD-Vol. 245, ASME, New York.
Huang,  H., and Kardomateas,  G. A., 2002, “Buckling and Postbuckling of Sandwich Beams Including Transverse Shear,” AIAA J., 40(11), pp. 2331–2335.
Gibson, L. J., and Ashby, M. F., 1997, Cellular Solids—Structure and Properties, 2nd Ed., Cambridge University Press, Cambridge, UK.

Figures

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Definition of the geometry for a delaminated sandwich beam/plate
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Force and moment resultants at the tip of the delamination
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Critical strain versus delamination length for the case of a glass-polyester/PVC sandwich composite
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(a) Comparison of the two material sandwich systems with regard to the delamination midpoint deflection during the initial post-buckling phase. (b) Comparison of the two material sandwich systems with regard to the midpoint delamination-substrate opening during the initial post-buckling phase.
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(a) Comparison of the two material sandwich systems with regard to the delamination load during the initial post-buckling phase. (b) Comparison of the two material sandwich systems with regard to the substrate load during the initial post-buckling phase.
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Effect of the length over core thickness aspect ratio on the midpoint delamination deflection during the initial post-buckling phase for glass-epoxy/polyester

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