... behind the metamaterial guided wave diode resides in the wave mode manipulation, including mode conversion and selective mode transmission. This study explores with a systematic parametric study on the antisymmetric elastic meta-structural unit cell with various shapes. The optimal configuration...

... a piezoelectric wafer active sensor. The characteristics of wave propagation caused by the presence of stiffener are analyzed in time domain using response signals and displacement snapshots. The results show that the existence of stiffeners causes obvious mode conversion. With the change of excitation frequency...

... methodology possesses great potential in future SHM and NDE applications. A case study for S 0 mode conversion to SH 0 mode using a different metamaterial unit cell is exhibited to illustrate other wave control capabilities. The paper finishes with summary, concluding remarks, and suggestions for future...