用matlab求响应曲线包络线的程序，是用来绘制lamb波在复合材料板中的传播响应曲线的。-Use matlab for response curve of envelope，Is used to draw the lamb wave propagation in composite material plate response curve。

兰姆波群速度相速度曲线图仿真matlab代码-Lamb wave group velocity graph showing the phase velocity

用matlab画图分析lamb波的原始激励信号和接收信号，并对比分析的差别-Using matlab drawing analyzes the original lamb wave excitation signal and the received signal, and compare the difference analysis

兰姆波相速度频散曲线的绘制（横轴为频厚积，纵轴为相速度），各模态的频散数据均可以导出。(Lamb wave phase velocity dispersion curve(The transverse axis is frequency-thickness products, and the vertical axis is phase velocity),and the dispersion data of each mode can be derived.)