给出了一种按要求产生并接收兰姆波的方法。提出了线列阵产生的兰姆波在探伤中应用的可能性。对人工缺陷试样做了实验,结果表明,该方法十分有效。实验中采用二维CRT延迟成象方法,所涉及到的极坐标系是由兰姆波的传播时间及入射角度构成的。显象辉度取决于回波幅值的大小。 A method of generating and receiving Lamb waves on demand is given. The possibility of applying Lamb wave generated by linear array to flaw detection is proposed. Experiments on artificial defect samples show that the method is very effective. Two-dimensional CRT delay imaging method was used in the experiment. The polar coordinate system involved is composed of propagation time and incident angle of Lamb wave. The brightness depends on the size of the echo amplitude.