Low-velocity impact is a major concern in the design of structures made of
advanced laminated composites, because it can cause extensive delaminations inside
composites that can severely degrade the load-carrying capability. To develop the impact
monitoring techniques providing on-line diagnostics of smart composite structures can be
helpful in the health monitoring of structures susceptible to impacts. In this paper, we discuss
the signal processing techniques for the simultaneous monitoring of impact locations and
damages using piezoceramic sensors (PZT).