In the eddy-current testing, testing coil is the sensitive component connecting the specimen and the instrument, so it is called transducer. The information of the test specimen is reflected by the variation of the coil impedance ( or induced voltage). 在涡流检测中,检测线圈是用来连接测试仪器和被测试件的敏感元件,它是涡流检测中的传感器,被检试件的信息是通过线圈阻抗(或感应电压)的变化反映出来的。
Development and study of ewt-2 eddy-current wall thickness testing instrument EWT-2型涡流管壁测厚仪的研制
The eddy-current effect caused by the gradient field was analyzed and a gradient-enhanced COSY experiment was also carried out to test this instrument. 报道了利用自制梯度场系统进行的脉冲梯度增强的高分辨COSY实验。