Visualization of weld defects in water by laser-ultrasonics
We present a new method of visualized weld defects in water by laser-ultrasonics. To detect and visualize a surface of weld metal with welding bead, the authors have developed a new detection method by leaky wave induced by interaction with surface acoustic waves and defects. Furthermore, developing Synthetic Aperture Focus Technique (SAFT) for visualized inspection surface 2-dementionally, we achieve the inspection result alike Penetrant Testing (PT) despite underwater environment. The proposed method can visualize weld defect of pit with around φ0.16mm and weld cracks with opening of a few μm and around 0.24mm in length.
Laser-ultrasonics leaky wave weld defect penetrant testing SAFT
Takahiro MIURA Satoshi YAMAMOTO Makoto OCHIAI
Power Systems Company, Toshiba Corporation; Yokohama, Japan
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
794-798
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）