NDLI: Blast Mitigation in a Sandwich Composite Using Graded Core and Polyurea Interlayer

Content Provider	Springer Nature Link
Author	Gardner, N. Wang, E. Kumar, P. Shukla, A.
Copyright Year	2011
Abstract	The dynamic behavior of two types of sandwich composites made of E-Glass Vinyl-Ester (EVE) facesheets and Corecell™ A-series foam with a polyurea interlayer was studied using a shock tube apparatus. The materials, as well as the core layer arrangements, were identical, with the only difference arising in the location of the polyurea interlayer. The foam core itself was layered with monotonically increasing wave impedance of the core layers, with the lowest wave impedance facing the shock loading. For configuration 1, the polyurea interlayer was placed behind the front facesheet, in front of the foam core, while in configuration 2 it was placed behind the foam core, in front of the back facesheet. A high-speed side-view camera, along with a high-speed back-view 3-D Digital Image Correlation (DIC) system, was utilized to capture the real time deformation process as well as mechanisms of failure. Post mortem analysis was also carried out to evaluate the overall blast performance of these two configurations. The results indicated that applying polyurea behind the foam core and in front of the back facesheet will reduce the back face deflection, particle velocity, and in-plane strain, thus improving the overall blast performance and maintaining structural integrity.
Starting Page	119
Ending Page	133
Page Count	15
File Format	PDF
ISSN	00144851
Journal	Experimental Mechanics
Volume Number	52
Issue Number	2
e-ISSN	17412765
Language	English
Publisher	Springer US
Publisher Date	2011-06-14
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sandwich structures Functionally graded material Polyurea interlayer Blast loading High speed photography Continuum Mechanics and Mechanics of Materials Optics, Optoelectronics, Plasmonics and Optical Devices Characterization and Evaluation of Materials Vibration, Dynamical Systems, Control Mechanics Structural Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering Aerospace Engineering

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