In this work, the guided wave de-bonding area-detecting technique was studied for application to containment liner plates in nuclear power plant areas. To apply this technique, an appropriate Lamb wave mode, symmetric and longitudinal dominance, was verified by the frequency shifting technique. The S0 2.7 MHz mm Lamb wave mode was chosen to realize quantitative experimental results and their visualization. Results of the bulk wave, longitudinal wave mode, and comparison experiments indicate that the wave mode was able to distinguish between the de-bonded and bonded areas. Similar to the bulk wave cases, the bonded region could be distinguished from the de-bonded region using the Lamb wave approach. The Lamb wave technique results showed significant correlation to the de-bonding area. As the de-bonding area increased, the Lamb wave energy attenuation effect decreased, which was a prominent factor in the realization of quantitative tomographic visualization. The feasibility of tomographic visualization was studied via the application of Lamb waves. The reconstruction algorithm for the probabilistic inspection of damage (RAPID) technique was applied to the containment liner plate to verify and visualize the de-bonding condition. The results obtained using the tomography image indicated that the Lamb wave-based RAPID algorithm was capable of delineating debonding areas.

在这项工作中，研究了导波剥离区域检测技术在核电站区域安全壳衬板上的应用。为了应用这种技术，通过频移技术验证了适当的兰姆波模式、对称和纵向优势。选择 S0 2.7 MHz mm Lamb 波模式来实现定量实验结果及其可视化。体波、纵波模式和对比实验的结果表明，波模式能够区分脱粘区和粘合区。与体波情况类似，可以使用 Lamb 波方法将粘合区域与脱粘合区域区分开来。兰姆波技术结果显示与脱粘面积显着相关。随着脱粘面积的增加，Lamb波能量衰减效应降低，这是实现定量断层显像的一个突出因素。通过应用兰姆波研究了断层可视化的可行性。损伤概率检查 (RAPID) 技术的重建算法应用于安全壳衬板，以验证和可视化脱粘情况。使用断层扫描图像获得的结果表明，基于 Lamb 波的 RAPID 算法能够描绘剥离区域。将损伤概率检查 (RAPID) 技术的重建算法应用于安全壳衬板，以验证和可视化脱粘情况。使用断层扫描图像获得的结果表明，基于 Lamb 波的 RAPID 算法能够描绘剥离区域。损伤概率检查 (RAPID) 技术的重建算法应用于安全壳衬板，以验证和可视化脱粘情况。使用断层扫描图像获得的结果表明，基于 Lamb 波的 RAPID 算法能够描绘剥离区域。