Experimental Investigation of the Ballistic Response of Composite Panels Coupled with a Self-Healing Polymeric Layer
Publication: Journal of Aerospace Engineering
Volume 29, Issue 6
Abstract
In this study, multifunctional panels with structural and self-healing capabilities were experimentally investigated under high velocity impact conditions. The panels were composed of two layers, one made of fiber-reinforced plastics (FRP) and the other of a self-healing ionomer, assembled in four different configurations with surface density ranging from 6.85 to . A total number of 16 impact experiments are reported, where spherical aluminium projectiles with diameters from 2.3 to 4.5 mm were shot at impact velocity, which varied from 2.0 to . The panel response was analysed in terms of (1) impact damage; and (2) capability to protect equipment located behind the panel from the cloud of fragments ejected downrange after panel perforation. Successful hole sealing was observed in panels consisting of a carbon FRP laminate and ionomer plate hit by projectiles up to 3.5 mm in diameter. The damage of the target was somewhat smaller when the ionomer was on the panel’s rear side. Such panels presented smaller debris cloud spread angle but lower momentum transfer to witness plates, suggesting that this panel configuration is preferable from the point of view of nearby equipment shielding effectiveness.
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Acknowledgments
The authors wish to thank the Cariparo Foundation (Padova, Italy) for having contributed to funding this activity in the framework of the IMBEMUS research program. Special acknowledgments must be reserved for Prof. L. DiLandro (Department of Aerospace Science and Technology, Politecnico di Milano, Italy) and his research group for providing Surlyn 8940 samples, and to Dr. A.M. Grande (University of Technology, Delft, Netherlands) for private conversation on ionomer properties. The authors wish also to thank Mr. F. Babolin and Mr. L. Tasinato for technical support and to Mr. A. Caon and Mr. A. Compagnin for analysis contributions.
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Published In
Journal of Aerospace Engineering
Volume 29 • Issue 6 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Sep 1, 2015
Accepted: Feb 24, 2016
Published online: Jun 15, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 15, 2016
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