Abstract
This paper presents the results of an experimental study on the low-velocity impact behavior of foam-core sandwich panels. Panels with PUR foam core and plain weave carbon fabric laminated face-sheets were subjected to low-velocity impact with hemispherical steel impactors of dierent diameters at various energy levels. Digital image correlation (DIC) technique (ARAMIS software) was used to measure the real-time displacement and velocity of the impactor, and the back surface out-of-plane panel deection time-history. A load sensor was used to record the contact force time-history. Non-destructive inspection (NDI) and destructive sectioning methods were used to evaluate the internal and external damage on the sandwich panels after impact. The eects of impact variables such as impactor diameter, impact energy, and sandwich panel conguration parameters, such as face-sheet thickness and foam core thickness on the impact behavior and resulting impact damage states were studied.
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