| 许烨东,魏勤,智达.翻边压电晶片激励Lamb波声场研究[J].,2015,34(6):547-553 |
| 翻边压电晶片激励Lamb波声场研究 |
| Research on Lamb wave excited by flanging piezoelectric wafer |
| 投稿时间：2015-04-13 修订日期：2015-10-19 |
| 中文摘要: |
| 压电晶片广泛应用于超声波检测领域,是激励和接收超声波的最主要器件之一。本文通过实验、有限元压电模拟和半解析数值模拟,研究用压电晶片在板中激励Lamb波,三种方法得到的Lamb波信号中S0模态非常吻合,A0模态处稍有差异。同时还分析了晶片的电极形态对声场分布以及声场能量的影响,声场随着电极面积比变化而变化。研究结果可为压电晶片的实际使用提供参考。 |
| 英文摘要: |
| The piezoelectric wafer is being more widely used in the ultrasonic detecting technology.It’s one of the most significant devices to generate and receive guided waves.In this paper,the Lamb wave is excited and received in plate by using piezoelectric wafer.The principle is studied in detail via experiment,finite element simulation and semi-analytic solution.The three solutions match perfectly in S0 mode of the Lamb wave signal but have differences in A0 mode.The effects on wave field distribution and energy by wafer’s electrodes are analyzed.The wave field changes with the area ratio of electrodes.The results provide reference for practical use of piezoelectric wafer. |
| DOI： |
| 中文关键词: 压电晶片、电极、Lamb波 |
| 英文关键词: Piezoelectric wafer,Electrode,Lamb wave |
| 基金项目: |
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