Acoustic Emission NDE
Acoustic Emission is the phenomenon of generation of transient elastic waves due to rapid release of strain energy caused by structural alterations within a material. It is classified as a passive NDE technique and probably the only technique that is applicable for real-time, in-situ assessment of damage with the capability to predict and guard against failure and its growth.
MISTRAS 2000 AE system from Physical Acoustics Corp., USA
Facilities where this technique is used
NDE facility for real-time, in-situ monitoring of failure initiation and growth in composite aircraft structures during static testing and damage characterization studies for R&D.
Major milestones / results of this technique
Early warning of damage initiation and growth in composite structures.