抄録
Ultrasonic angle beam testing has been conducted so far to maintain the reliability and earth quake-proof in beam-to-column joints. Ceramic tabs have been increasingly used in welding constructions in recent years, therefore they result in closed distribution of defects at end zones. As that result, the conventional ultrasonic angle beam testing has been anxious about the detection of weld defects and the accuracy of measuring defect size in beam-to-column joints. This paper shows stable and adequate evaluation on weld defects in end zones, adopting not only maximum echo amplitude technique but also tip echo technique in reconsidering of probe angles and sizes.
