On the impact response of sandwich composites with cores of balsa wood and PVC foam

Published on Dec 1, 2010in Composite Structures5.138
· DOI :10.1016/J.COMPSTRUCT.2010.06.018
Cesim Atas15
Estimated H-index: 15
(Dokuz Eylül University),
Cenk Sevim1
Estimated H-index: 1
Sources
Abstract
Abstract This paper presents an experimental investigation on impact response of sandwich composite panels with PVC foam core and balsa wood core. A number of tests were performed under various impact energies. Damage process of the sandwich composites is analyzed from cross-examining load–deflection curves, energy profile diagrams and the damaged specimens. The primary damage modes observed are; fiber fractures at upper and lower skins, delaminations between adjacent glass–epoxy layers, core shear fractures, and face/core debonding. After visual inspection of the top and bottom face-sheets, initial examination, damage mechanisms at the interior layers and cores were ascertained through destructive analysis, i.e. sectioning by an abrasive water-jet machine, of samples. In addition to the single impacts, repeated impact response of the samples is also investigated.
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