Abstract
In this paper we report on the tests that investigate the blast resistance of graded sandwich plates. The deformation model, the back-face-sheet deflections and the core compressions have been compared with the test results obtained from tests done on structures with ungraded core layers. The stress transfer characteristics are analyzed based on the one dimensional stress wave theory, indicating that the stress wave transferred factor is smaller in the graded core layers and it is smallest in the relative density-tapered core arrangement specimen. By considering the deformation model, back-face-sheet deflections, core compressions and stress transfer characteristics, the blast resistance of the graded sandwich plates is found to be better than that of the ungraded ones, and in the present loading conditions, the relative density-tapered core arrangement from the front sheet to the back sheet is found to have the best blast resistance.
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