Yi Zhou, Sanxing Li. Study of Lamb Wave Dispersion Characterization Using Multiplexed Two-Wave Mixing Interferometer[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2319001
- Laser & Optoelectronics Progress
- Vol. 58, Issue 23, 2319001 (2021)
Fig. 1. Two-wave mixing device
Fig. 2. System configuration of multiple two-wave mixing (MTWM) interferometer
Fig. 3. Signals received by three adjacent elements in a nine-element array
Fig. 4. Experimental setup for qualitative analysis of dispersion curve using two-dimensional FFT technique
Fig. 5. Detected Lamb wave time traces with 0.98 mm spacing
Fig. 6. Recovered Lamb wave dispersion on an aluminum plate
Fig. 7. Dispersion curves of Lamb wave in aluminum plate obtained by experiment and theoretical calculation
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