一、前言在超声无损检验中,通常使用压电式换能器,超声探头必须通过液体或润滑脂等声耦合介质与被检体相接触。多年来在某些工程上急需解决高速移动物体和高温物体的超声探伤问题。虽然超声水浸法和部分水浸法,在某种程度上也可应用干超声自动探伤解决高速移动的超声探声问题,但仍存在不 I. Introduction In ultrasonic non-destructive testing, piezoelectric transducers are usually used. The ultrasonic probe must be in contact with the object through acoustic coupling medium such as liquid or grease. Over the years in some projects urgently needed to solve the high-speed moving objects and high temperature ultrasonic flaw detection problems. Although ultrasonic flooding and partial flooding, to some extent can also be applied to dry ultrasonic automatic detection to solve the problem of high-speed mobile ultrasound sounding, but there are still