Multi-bandgap metamaterial-based suppression of nonlinear multi-harmonic signals in ultrasonic guided wave

Key Points

• The study identifies multi-bandgap metamaterials as effective in suppressing nonlinear signals.
• A notable reduction in multi-harmonic signals was observed during ultrasonic guided wave applications.
• Assessment using advanced metamaterial frameworks enhances signal clarity compared to conventional methods.
• This approach may enable improvements in applications like non-destructive testing and structural health monitoring.