Abstract
In the last few decades, fibre-reinforced composites have seen significant growth in use in aircraft and automotive structures because of their superior properties such as high specific strength and stiffness, good fatigue and wear tolerance. During operation, these structures are subjected to different loading conditions including impact which may cause damage to them. Damage caused by lowvelocity impacts is more severe since it is undetectable in general visual inspections but it may reduce structural integrity significantly. In this work behavior of CFRP laminates under low-velocity impact is investigated. The effect of the impact energy on the damage is studied for the different stacking sequences of CFRP laminates. Composite laminates are fabricated with different stacking sequences and tested with a drop weight impact testing machine under different impact energies. Phased array ultrasonic technique is used to investigate the damage configuration of impacted specimens. A comparative study on damage shape and size as a function of the impact energy is done for different stacking sequences.
Published Version
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