- Conference date: 15–20 July 2012
- Location: Denver, Colorado, USA
Nondestructive evaluation of adhesive joints in metal plate-like structures can be performed with ultrasonic guided waves. The key is to generate a mode that is sensitive to defects in the adhesive. This mode typically must be generated by mode conversion that occurs at a transition in the waveguide associated with the edge of the adhesive. Transmissibility, through mode conversion, is analyzed by a simple modeling method to quantitatively match wave structures in the continuous portion of a waveguide cross-section. The existence of mode pairs that have nearly identical wave structures in the continuous portion of the waveguide is shown; and more importantly, we show that incident modes having high transmission coefficients are converted to these mode pairs.
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