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A composite sandwich plate with a novel core design

Uzal, Anil; Sonmez, Fazil O.; Oz, Fatih E.; Cinar, Kenan; Ersoy, Nuri


Anil Uzal

Fazil O. Sonmez

Fatih E. Oz

Kenan Cinar

Nuri Ersoy


© 2018 Elsevier Ltd In this study, a new core design is introduced for sandwich composite structures. Its strength and failure behavior are investigated via three-point bending tests. E-glass-fiber-reinforced epoxy resin is selected as the material for both the core and the face sheets. The core has an egg-crate shape. Acoustic emission (AE) method is used to detect the progression of damage. Signals due to elastic waves caused by activated damage mechanisms are investigated in order to identify the corresponding failure modes. A finite element model of the sandwich structure is developed to predict the failure behavior of the specimens under the loading conditions in the tests. A promising agreement between the results of the finite element model and the experiments is observed. The force-deflection-relation, the failure load as well as the region where damage initiates are accurately predicted.


Uzal, A., Sonmez, F. O., Oz, F. E., Cinar, K., & Ersoy, N. (2018). A composite sandwich plate with a novel core design. Composite Structures, 193, 198-211.

Journal Article Type Article
Acceptance Date Mar 12, 2018
Online Publication Date Mar 13, 2018
Publication Date Jun 1, 2018
Deposit Date Jul 19, 2018
Journal Composite Structures
Print ISSN 0263-8223
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 193
Pages 198-211
Keywords sandwich panels, composite materials, acoustic emission, out-of-plane loading, three-point bending, finite element, modeling
Public URL
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