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作者认为他们发展了一种初型(prototype)超声探伤仪器,该仪器在脉冲回波模式下可以产生单极应力脉冲。用单极脉冲取代双板脉冲,带宽可显著增加。在材料评估及缺陷大小的探测方面所能达到的应用范
The authors believe they have developed a prototype ultrasonic flaw detector that produces unipolar stress pulses in pulse echo mode. With a single pole pulse instead of double plate pulse, bandwidth can be significantly increased. The range of applications that can be achieved in material evaluation and detection of defect size