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

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,...

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Bibliographic Details
Published in:Composite structures 2010-12, Vol.93 (1), p.40-48
Main Authors: Atas, Cesim, Sevim, Cenk
Format: Article
Language:English
Subjects:
Applied sciences
Balsa
Balsa wood
Cellular
Composites
Damage
Delaminating
Exact sciences and technology
Foams
Forms of application and semi-finished materials
Fracture mechanics
Fracture mechanics (crack, fatigue, damage...)
Fracture toughness
Fundamental areas of phenomenology (including applications)
Impact
Impact response
Physics
Polymer industry, paints, wood
Polyvinyl chlorides
PVC foam
Sandwich composite
Solid mechanics
Structural and continuum mechanics
Technology of polymers
Wood
Wood. Paper. Non wovens
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Summary: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.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2010.06.018