| 一种声发射传感器的研制 |
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| 引用本文： | 王庆锋,吴斌,焦敬品,何存富.一种声发射传感器的研制[J].压电与声光,2007,29(2):179-181. |
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| 作者姓名： | 王庆锋 吴斌 焦敬品 何存富 |
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| 作者单位： | 北京工业大学,机电学院,北京,100022 |
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| 摘 要： | 设计了一种接触式声发射传感器,详细介绍了压电晶片、背衬、声匹配层以及前置放大器对声发射传感器灵敏度、分辨率、信噪比等指标的影响。利用阻抗分析仪对声发射传感器的输入电导进行了测定,结果表明声发射传感器设计方法可行。
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| 关 键 词： | 声发射 灵敏度 信噪比 电导 |
| 文章编号： | 1004-2474(2007)02-0179-03 |
| 修稿时间： | 2006-01-19 |
Design of a Kind of Acoustic Emission Sensor |
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| WANG Qing-feng,WU Bin,JIAO Jing-pin,HE Cun-fu.Design of a Kind of Acoustic Emission Sensor[J].Piezoelectrics & Acoustooptics,2007,29(2):179-181. |
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| Authors: | WANG Qing-feng WU Bin JIAO Jing-pin HE Cun-fu |
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| Affiliation: | College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | The design of a contact PVDF acoustic sensor is described in this paper,including the operating principle and the structure of the sensor,and the influence of backing material,acoustic matching layer and pre-amplifier on the sensitivity,resolution and signal to noise ratio(SNR) of the sensor.The sensor has been calibrated using a precision impedance analyzer,by which the parameters of the acoustic sensor have been obtained.Test result shows that the design method is acceptable. |
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| Keywords: | acoustic emission sensitivity signal to noise ratio admittance conductance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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