Sage Journals: Discover world-class research

Abstract

This paper investigates the transition from face wrinkling failure to face sheet compression failure, the latter induced by local buckling at fibre level, so called face sheet microbuckling. An experimental series is performed on small sandwich panels subjected to uni-axial compression. Two different face sheet lay-ups are used in conjunction with a range of PVC core material densities. The results are compared to analytical wrinkling formulae and the correlation is found to be very good. The experimental results also clearly show the transition from wrinkling failure to face sheet microbuckling failure when the core modulus exceeds a certain value. The localised failure surfaces are inspected by microscope and some different characteristics of the failure modes are indicated.

Get full access to this article

View all access options for this article.

References

1. Plantema, F.J. (1966). Sandwich Construction, John Wiley & Sons, New York .

2. Hoff, N.J. and Mautner S.E. (1945). Buckling of Sandwich Type Panels , Journal of the Aeronautical Sciences, 12(3): 285–297 .

3. Fleck N.A. (1997). Compressive Failure of Fiber Composites. In: Hutchinson, J.W. and Wu, T.Y. (eds), Advances in Applied Mechanics, 33: 43–117.

4. Berbinau P. et al. (1999). Effect of Off-axis Ply Orientation on 0 -fibre Microbuckling . Composites: Part A, 30: 1197–1207 .

5. Fagerberg, L. (2000). Wrinkling of Anisotropic Sandwich Panels Subjected to Multi-Axial Loading . In: Meyer-Piening, H.-R. and Zenkert, D. (eds.), Sandwich Construction 5 – Proceedings of the 5th International Conference on Sandwich Construction, pp. 211–220 , EMAS Publishers, London.

Wrinkling and Compression Failure Transition in Sandwich Panels

Abstract

Get full access to this article

References