C13-a4 - Virtual source multi-mode method for ultra-thick weld full-section inspection
- Event
- 2025 ICU PADERBORN - 9th International Congress on Ultrasonics
2025-09-21 - 2025-09-25
Paderborn - Band
- Lectures
- Chapter
- C13-a - Ultrasonic Material Characterization
- Author(s)
- X. Ma, M. Chen, K. Yang, H. Jin - Zhejiang University, Hangzhou (China)
- Pages
- 231 - 234
- DOI
- 10.5162/Ultrasonic2025/C13-a4
- ISBN
- 978-3-910600-08-9
- Price
- free
Abstract
Full-section inspection of ultra-thick welds (UTW) is crucial for the nuclear power industry. The extensive weld section and the nearly vertical groove geometry pose significant challenges for flaw characterization. This paper presents a virtual source multi-mode total focusing method (VSMM-TFM) inspection method. The VS method not only enhances the emission energy but also simplifies multi-mode path calculations. Multi-mode decoupling enables full-section imaging at a single scanning position. Simulation and experiment on a 120-mm workpiece demonstrate that the VSMM-TFM method exhibits significant advantages in terms of inspection sensitivity, data volume, and imaging efficiency.