And echo impulse waveforms had been studied when laser irradiates oblique target, circle target and step target. 并研究了激光束作用到倾斜面目标、圆形目标、阶梯型目标的回波波形(EW)。
The specialities of echo waves for various explosive welding seams are discussed, the formulae for calculation of the echo phase and amplitude are derived and the theoretical waveforms of the echoes are given. 介绍了各种爆炸焊缝超声检验回波特点,推导了计算回波信号幅度和相位的公式,给出了理论波形图。