Raišutis Renaldas, Tumšys Olgirdas, Žukauskas Egidijus, Samaitis Vykintas, Draudvilienė Lina, Jankauskas Audrius
Ultrasound Research Institute, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania.
Department of Electrical Power Systems, Faculty of Electrical and Electronics Engineering, Kaunas University of Technology, Studentu g. 50, LT-51368 Kaunas, Lithuania.
Materials (Basel). 2023 Aug 2;16(15):5410. doi: 10.3390/ma16155410.
This research utilizes Ultrasonic Guided Waves (UGW) to inspect corrosion-type defects in steel pipe walls, providing a solution for hard-to-reach areas typically inaccessible by traditional non-destructive testing (NDT) methods. Fundamental helical UGW modes are used, allowing the detection of defects anywhere on the pipe's circumference using a limited number of transducers and measurements on the upper side of the pipe. Finite element (FE) modeling and experiments investigated generating and receiving UGW helical waves and their propagation through varying corrosion-type defects. Defect detection is based on phase delay differences in the helical wave's signal amplitude peaks between defective and defect-free regions. Phase delay variations were noted for the different depths and spatial dimensions of the defects. These results highlight the phase delay method's potential for NDT pipeline inspection.
本研究利用超声导波（UGW）检测钢管壁中的腐蚀型缺陷，为传统无损检测（NDT）方法通常难以触及的区域提供了一种解决方案。使用基本螺旋超声导波模式，通过在管道上侧使用有限数量的换能器和测量，可以检测管道圆周上任何位置的缺陷。有限元（FE）建模和实验研究了超声导波螺旋波的产生和接收及其在不同腐蚀型缺陷中的传播。缺陷检测基于缺陷区域和无缺陷区域之间螺旋波信号幅度峰值的相位延迟差异。记录了不同深度和空间尺寸缺陷的相位延迟变化。这些结果突出了相位延迟方法在无损检测管道检查中的潜力。
