GS4 Student Scholars Symposium

Inspection of complex geometries is always a challenge because of their curved shapes, sharp edges, internal cavities, small ridges, and varying thicknesses. Hidden defects in these areas can severely compromise the structural integrity of the products. Conventional UT methods face issues with defect detection because of the probe’s incapability to align with unconventional shapes and beam penetration limitations. Customizing wedges can address some challenges; however, fabricating wedges that precisely match part surfaces is often impractical. At the same time, due to the design inconsistency and rough surface of many industrial components, contact method NDT cannot accurately detect anomalies, which is risky if the product is used in critical areas like bridge joints or compressor parts.

Water is considered a superior medium for transmitting ultrasound waves when the specimen is submerged. This study explores the integration of curvilinear and 3D scanning with immersion ultrasonic testing to enhance defect detection in complex geometries. The curvilinear approach enables precise contour testing, while 3D scanning helps map geometry variations for optimized probe positioning. The results highlight the potential of these advanced scanning techniques in overcoming inspection limitations and improving non-destructive evaluation of complex-shaped parts.