【摘要】 针对单一模式导波入射的情况 ,利用混合边界元模型计算台阶型散射区域的反射系数和透射系数与各种入射模式、入射频率以及台阶高度变化的关系 ,研究在单一模式导波入射时导波与散射体的相互作用。研究结果可用来提高无损检测工程中的检测灵敏度与能量的穿透能力 ,尤其是在那些发生了台阶状厚度变化波导中的情形。更多还原

【Abstract】 Aiming at specific guided wave mode incidence situations, hybrid boundary element modeling was used to estimate reflection and transmission from step scatterers. Interaction of individual guided wave modes with scatterers was investigated by calculating the reflection and transmission coefficients in scattered fields for varying incident modes, frequencies and scatterer shapes. The results of the research could be used to improve inspection sensitivity and penetration power for practical nondestructive testing applications,notably those in which thickness variation was present.更多还原