This study proposes the use of Scanning Acoustic Microscopy(SAM) to detect internal defects in the boss part of hydrogen storage tank and presents the optimal inspection conditions. After analyzing the structural characteristics of the boss part, the ...
This study proposes the use of Scanning Acoustic Microscopy(SAM) to detect internal defects in the boss part of hydrogen storage tank and presents the optimal inspection conditions. After analyzing the structural characteristics of the boss part, the optimal ultrasonic frequency and inspection angle were determined under various experimental conditions. Using the experimentally derived optimal parameters, ultrasonic signals were acquired by applying ultrasonic incidence from both the outer side and inner side of the boss part. The A-scan, B-scan, and C-scan data from the surface to the region of interest(ROI) were successfully obtained for both the normal and defective specimens, enabling the identification of internal defects. These results demonstrate the feasibility of SAM as an effective non-destructive testing(NDT) technique for the early detection of internal structural anomalies in hydrogen storage tank boss part.