使用兰姆波和超声计算机断层扫描对钢板中不断增加的损伤进行成像

Zielińska Monika, Rucka Magdalena

Department of Technical Fundamentals of Architectural Design, Faculty of Architecture, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.

Department of Mechanics of Materials and Structures, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.

Materials (Basel). 2021 Sep 6;14(17):5114. doi: 10.3390/ma14175114.

This paper concerns the inspection of steel plates, with particular emphasis on the assessment of increasing damage. Non-destructive tests were performed on four plates, one of which was undamaged, while the remaining three had defects in the form of circular holes with diameters of 2, 5 and 10 cm. Guided Lamb waves were used in the research, and the image reconstruction was performed using ultrasound computed tomography. The damage size was estimated by tracking the real course of rays and densifying the pixel grid into which the object was divided. The results showed the great potential of ultrasound tomography in detecting defects in steel elements, together with the possibility of estimating damage size.

本文涉及钢板检测，尤其着重于对损伤加剧情况的评估。对四块钢板进行了无损检测，其中一块未受损，而其余三块存在直径为2厘米、5厘米和10厘米的圆形孔洞形式的缺陷。研究中使用了导波兰姆波，并采用超声计算机断层扫描进行图像重建。通过跟踪射线的实际路径并细化划分物体的像素网格来估计损伤尺寸。结果表明，超声断层扫描在检测钢构件缺陷方面具有巨大潜力，同时也具备估计损伤尺寸的可能性。