Electromagnetic emission

Abstract

Originating from the field of geophysics science, electromagnetic emission (EME) analysis is a nondestructive measurement technique to monitor crack formation and propagation. Similar to AE analysis, the EME method is capable of providing realtime information on microscopic failure mechanisms on a qualitative basis. In both cases the reliability of quantitative information still hinges on the lack of a detailed understanding of the correlation between the source mechanism and the measured signal. Therefore, EME analysis is currently considered a method under development and is mostly limited to applications in materials research and has not yet been used for structural health monitoring applications.