| 脉冲涡流无损检测系统的设计 |
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| 引用本文： | 王雅萍.脉冲涡流无损检测系统的设计[J].传感器与微系统,2007,26(8):76-78. |
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| 作者姓名： | 王雅萍 |
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| 作者单位： | 西南科技大学,制造科学与工程学院,四川,绵阳,621010 |
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| 摘 要： | 阐述了脉冲涡流无损检测系统的基本原理和组成。介绍了利用圆柱形线圈作为传感器进行金属导体表面裂纹的无损检测系统的激励源、信号放大及A/D转换部分。经实验表明:采用激励频率为1000Hz,占空比45%~55%时的测试效果最佳;激励电压采用7.5V,信号总放大倍数为1000得到的信号最适合PCI1712进行数据采集;缺陷深度与涡流的峰值电流相对应。
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| 关 键 词： | 脉冲涡流 无损检测 圆柱形线圈 激励源 信号检测和A/D转换 |
| 文章编号： | 1000-9787（2007）08-0076-03 |
| 修稿时间： | 2007-01-10 |
Design of pulsed eddy-current nondestructive test system |
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| WANG Ya-ping.Design of pulsed eddy-current nondestructive test system[J].Transducer and Microsystem Technology,2007,26(8):76-78. |
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| Authors: | WANG Ya-ping |
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| Abstract: | The theory and makeup of the pulsed eddy-current(PEC) nondestructive testing(NDT)system,which is included the excitation source,signal magnifying and A/D transformation,is presented.The surface crack on the metal tested by using the cylinder inductance sensor is introduced.When the excitation frequency is 1 000 Hz and time-empty ratio is 45 %~55 %,the experiment test results are optimum,as well as for PCI1712 data collections when the excitation voltage is 7.5 V and signal amplifier multiple is 1 000.The crack depths is corresponding to the eddy-current scope. |
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| Keywords: | pulsed eddy-current nondestructive testing cylinder inductance sensor excitation source signal magnifying and A/D transformation |
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