| 田光春,刘镇清,景永刚.斜面型厚度变化板中导波的研究[J].声学技术,2004,(1):39~42 |
| 斜面型厚度变化板中导波的研究 |
| Guide waves in an inclined discontinuity plate |
| 投稿时间：2002-07-25 修订日期：2002-11-01 |
| DOI： |
| 中文关键词: 导波 混和边界元法 散射 模式转换 二维傅立叶变换 |
| 英文关键词: guided wave hybrid boundary element method scattering mode conversion 2-D FFT |
| 基金项目:国家自然科学基金资助项目(10074050) |
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| 中文摘要: |
| 针对单一模式导波入射的情况,利用混和边界元模型计算了斜面型散射区域的反射系数和透射系数与各种入射模式、入射频率以及斜面倾角变化的关系,研究了在单一模式导波入射时导波与散射体的相互作用。文章的结果可以用来提高大量实际的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斜面状厚度变化波导中的情形。 |
| 英文摘要: |
| Aiming at specific guided-wave mode incidence situations, hybrid boundary element modeling is used to estimate reflection and transmission from inclined scatterers. Interaction between individual guided-wave modes and the scatterers is investigated by calculating the reflection and transmission coefficients in the scattered fields for various incident modes, frequencies, and angles of inclination. Results obtained in this paper can be used to improve inspection sensitivity and penetration power for a variety of practical NDE applications, notably those in which thickness variation is present. |
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