摘要
本文提出利用TR双直探头在裂纹尖端产生衍射回波,探测多层热套尿素合成塔环焊缝的可行性。
This paper describes an ultrasonic inspection which uses T-R double probe to generate echo wave, at the crack-tip, to inspect the circum-ferential welds of multi-layer urea tower.
出处
《压力容器》
1992年第3期36-40,共5页
Pressure Vessel Technology
