Resonant Airborne Acoustic Emission for Nondestructive Testing and Defect Imaging in Composites

A new version of an acoustic emission mode which is different from its traditional counterpart discussed in view applications for nondestructive testing. It based on the effect waves generation defect area ambient air by local standing wave vibration developed this at resonant frequency. Another approach does not require preliminary knowledge defect-resonance frequency one that uses wideband activation a noise-like input signal. The field “fingerprint” radiation source, and thus applicable to detection imaging. This enables use commercial microphone scanning detecting imaging various defects composites. An improvement acoustic-emission multiple-axis robot studied complex shape components. rapid, full-field implemented means array microphones (acoustic camera). Numerous case studies validate potential modes integration system inexpensive, fully instrumental