粗糙表面超声探伤耦合剂的研究

在超声探伤中，经常遇到测试面较粗糙。如用常规耦合剂时，其耦合剂损耗大，声能透过率低，探伤效果较差。本文介绍了一种适合在粗糙表面上进行超声探伤的耦合剂，其声学性能优于其他类型的耦合剂，应用到球墨铸铁曲轴超声探伤中，效果很好，由于其制备方法简单，成本低，使用损耗小，可较大地提高超声探伤灵敏度，具有很好的应用前景。

Analysis of Couplants for Ultrasonic Flaw Detection on Rough Surfaces

Test surfaces are usually rough in ultrasonic flaw detection.If ordinary couplants are used,the coupling loss is high,the penetration ratio of sound energy is low and the detection efficiency is not good.This paper demonstrates a couplant suitable for ultrasonic flaw detection on rough surfaces.It's acoustic properties are superior to other kinds of couplants.It is very effective when used in ultrasonic flaw detection of nodular cast iron crankshaft.Due to the simple preparation methods,low cost and less loss,it can greatly improve ultrasonic flaw detection sensitivity and so has a very good prospect.