Fiber metal laminates (FMLs) are hybrid composites consisting of alternating thin layers of metal sheets and fiber adhesive layers. This paper describes an experimental investigation of the impact energy absorption capability of glass fiber/aluminum laminates in relation to stacking sequence. Six groups of specimens were studied. Each unsymmetrical group consisted of two specimens with exactly similar layers but in different positions. Changing the arrangement of layers does not change the cost or weight but improve the properties considerably. Test results show that using 45° glass layer at the front (where the striker impacts) is better than 90° glass layer and using 90° glass layer at the front is better than zero degree layer. The best arrangement is 45° glass layer at the front and zero degree glass layer at the back.

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