| 邓江勇,陈振华,董德秀,卢 超.超声相控阵传感器阵元间串扰源分析及其隔离方法[J].电子测量与仪器学报,2022,36(9):132-139 |
| 超声相控阵传感器阵元间串扰源分析及其隔离方法 |
| Analysis and isolation method of crosstalk between the elementsin ultrasonic phased array transducer |
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| DOI： |
| 中文关键词: 阵元间串扰 数值模型 楔块 超声相控阵 |
| 英文关键词:crosstalk between the elements numerical simulation wedge phased array ultrasonic test |
| 基金项目:国家自然科学基金（11664027）、广西防城港核电有限公司技术开发项目（3100132784）资助 |
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| 中文摘要: |
| 通过研究超声相控阵探头阵元间串扰机理及串扰隔离方法提高近表面检测能力。 基于数值仿真技术分析了安装楔块
前后阵元间超声波串扰对检测信号及检测声场的影响,分析探头楔块对于隔离阵元间超声波串扰与近表面缺陷检测信号的作
用。 提出楔块优化方案,并通过试验方法对其进行验证。 结果显示,数值模型可直观显示阵元间的超声波串扰,提出的楔块优
化方案可将时域上的阵元间串扰信号与近表面检测信号相互隔离。 优化楔块后的相控阵探头可对深度 2 mm、直径 0. 3 mm 平
底孔进行成像检测,近表面缺陷检测能力显著提高。 |
| 英文摘要: |
| The near-surface detection capability is improved by analyzing the crosstalk mechanism and crosstalk isolation method between
ultrasonic phased array probe elements. The influences of ultrasonic crosstalk between the elements before and after installing the wedge
on the testing signal and testing sound field are analyzed based on the numerical simulation model. Then the capability of the probe
wedge on isolation of the crosstalk of array element and near-surface testing signal is analyzed. The wedge block optimization scheme is
proposed, and verified by the experimental method. The results indicate that the numerical model can visually display the ultrasonic
crosstalk between the array elements, and the proposed wedge block optimization scheme can isolate the crosstalk signal between the
array elements in the time domain and the near-surface detection signal from each other. The phased array probe after optimizing the
wedge can perform imaging testing on flat-bottomed holes with a depth of 2 mm and a diameter of 0. 3 mm, the near-surface detection
capability is significantly improved. |
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