Acoustic Emission

Abstract Acoustic emission (AE) is one of the most promising methods for structural health monitoring (SHM) materials and structures. Because its passive non-invasive nature, it can be used during operation a structure supply information that cannot collected in real time through other techniques. It based on recording study elastic waves are excited by irreversible processes, such as crack nucleation propagation. These signals sensed transducers transformed into electric waveforms offer location type source. This chapter intends to present basic principles, equipment, recent trends applications aeronautics, highlighting role AE modern non-destructive testing SHM. The literature field vast; therefore, although included references provide an idea basics contemporary interest level research practice, they just fraction total possible list worthy studies published years.