Experimental Study on the Low-velocity Impact Behavior of Foam-core Sandwich Panels
نویسندگان
چکیده
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 di erent 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 de ection 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 e ects of impact variables such as impactor diameter, impact energy, and sandwich panel con guration 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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