超声波探伤设备在工农业生产检验上的应用,起始于本世纪四十年代。五十年代初期起,探伤设备的生产发展到商品化,使用范围亦不断扩大。早期生产的雏形设备为最基本结构形式的A型指示的超声波探伤仪,即图1所示的方块原理图,换能器多采用天然晶体石英,使用范围仪局限于纵波探伤。 Ultrasonic testing equipment in industrial and agricultural production testing application, started in the forties of this century. Since the early 1950s, the production of testing equipment has been commercialized and the scope of its use has been continuously expanded. Early prototype equipment for the production of the most basic form of A-type ultrasonic flaw detector, that is, the block diagram shown in Figure 1, the use of natural quartz crystal transducer, the use of the scope of the instrument is limited to longitudinal wave detection.