Effect of Impactor Energy and Layers Thickness on Fiber Metal Laminates in Low Velocity Impact

Fiber-metal laminate composite is made by pasting metal layers and fiber-resin composite together. The metal used is often aluminum and the fiber is Aramid¡ Carbon or Glass depend on the application. In this study¡ we have used aluminum-fiber glass laminates (GLARE) due to its vast application because of its high mechanical resistance. At first¡ the effect of impact energy on fiber-metal composite in low velocity impact was analyzed experimentally. It was concluded that by increasing the primitive energy of the impactor¡ composite structure shows more toughness and energy attraction rate. Afterward¡ by modeling the performed tests in LS-DYNA software¡ a validation was conducted. Due to the subtle difference between numerical and experimental result¡ the validation of the modeling was accepted. In the last step¡ the effect of changing the thickness of layers on a generally fixed thickness composite structure was studied numerically. It was concluded that increasing the thickness of fiber layers and decreasing the thickness of aluminum layers lead to an increase of the collision time span and a decrease of the composite structure toughness.