And they used what they called eddy current testing.
他们使用涡流检测。
Experiments proved that the quantification of different depth flaws could be realized just only by scanning with pulsed eddy current testing once, so it has good prospect in use.
试验证实，脉冲涡流只需一次扫描就可对被测试件上不同深度的裂纹实现定量检测，因此具有广阔的应用前景。
This paper first introduces eddy current testing (ET).
本文首先就涡流检测进行了介绍。
Transducer is the key device of eddy current testing equipment.
传感器是涡流检测设备的关键器件。
The far field eddy current testing system for trial was developed.
建立了试验远场涡流检测系统。
Neural network technology is used more and more widely in eddy current testing.
人工神经网络技术在涡流检测中的应用越来越广泛。
The lift-off effect of eddy current is an important factor in eddy current testing.
涡流检测中的提离效应是影响涡流检测的一项重要因素。
A serial communication protocol used in the eddy current testing system is designed.
根据特定的电涡流检测系统设计了有效的串行通信协议。
Remote field eddy current testing equipment, method and principle are briefly described.
本文就远场涡流检测设备、方法及机理作简要介绍。
Research showed that data fusion was applicable for multi-frequency eddy current testing.
研究证明，数据融合技术较适用于多频涡流检测。
The design and realization of an eddy current testing system based on Ethernet were described.
介绍了基于以太网的涡流测试系统的构成及实现。
It discusses the feasibility of eddy current testing of the parts with certain thickness of paint.
论证了在一定漆层厚度下带漆零件的涡流探伤的可行性。
The result showed that layered multi-subnet neural network was suitable to online eddy current testing.
结果表明，层次式多子网神经网络适用于实时在线检测。
A testing method which combined of eddy current testing with ultrasonic testing technology was proposed.
本文提出了一种涡流和超声波组合检测连续管的方法。
The paper deals with evaluation of dyadic Green's functions that arise in eddy current testing for a conductive plate.
根据涡流无损检测中的几组典型数据，比较了用该文方法和直接数值积分法计算并矢格林函数的精度和求解速度。
A new fast digital filter of on line eddy current testing system for decreasing the effect of high frequency noise was researched.
针对涡流在线检测系统中的各种高频噪声影响，设计了快速去噪滤波算法。
The output signals! of measuring coil for eddy current testing is rather complicated, but is essential for detection accuracy and reliability.
涡流检测线圈输出信号十分复杂，对该信号进行准确的分析处理是获得高精度和高可靠性检测结果的基础。
Through practical testing, it shows that the eddy current testing can increase the testing speed, improve the sensitivity and test accurately.
通过实际检测表明，涡流检测速度快、灵敏度高、测试结果准确。
On the basis of the principle of eddy current testing, the instrument was designed for the quality of austenitic heat-resistant steel air valve.
针对奥氏体耐热钢气阀质量检测的问题，依据涡流检测原理，设计了奥氏体耐热钢气阀缺陷及硬度的涡流检测装置。
Taking into account the characteristic of the high-voltage transmission line, this paper discusses the basic principle of the eddy current testing method.
结合高压输电线的特点，在论述了电涡流检测方法的基本原理之后，进一步论述了差动式检测线圈的电涡流检测原理与方法。
Through practical eddy current testing, it shows that eddy current method can fine failure position quickly in repairing, and can improve efficiency and provide safeguard.
通过采用涡流法进行实际检测证实：在压缩机中间冷却器检修中采用此法可快速找到问题部位，为检修提高了效率，也为设备安全运行提供保障。
Digital correlation method was used to extract phase information as the phase information of eddy current testing signals could reflect the characteristics of detecting system.
涡流检测信号中的相位信息能反映检测系统的某些特性，讨论用数字相关法提取相位特征信息。
Through practical eddy current testing, it shows that eddy current method can find quickly problem position in repair to condenser and improve efficiency and provide safeguard.
通过采用涡流法进行实际检测证实：在凝汽器检修中采用此法可快速找到问题部位，为检修提高了效率也为设备安全运行提供保障。
The application status of magnetic particle testing, penetrant testing, eddy current testing, radiographic testing and ultrasonic testing in weld crack inspector were introduced.
介绍了磁粉检测、渗透检测、涡流检测、射线检测和超声波检测技术在焊接裂纹检测中的应用状况。
Considering problem of the leading electrode of the Locomotive traction motor crack flaw, the eddy current testing method for leading electrode crack defect is researched in the paper.
针对机车牵引电机主极裂纹问题，本文深入地研究了用电涡流方法实现对主极裂纹检测的问题。
Alternative magnetic leakage flux method was developed from the eddy current testing and traditional magnetic leakage flux testing, and it was advantageous for surface flaw recognition.
交变漏磁检测方法由于兼具涡流检测和传统漏磁检测的特点，对表面缺陷具有很高的识别率。
However, the signals of eddy current testing are so weak that it is difficult to identify the signals. So more effective signal processing method must be adopted to deal with the weak signals.
然而电涡流检测信号微弱，识别困难，必须采用比较有效的信号处理方法对信号进行处理。
The paper introduced the principle and method of measuring the thickness and inspecting the defect with electromagnetic eddy current testing for tubes of in-service heat exchanger in urea plant.
本文介绍了用电磁涡流法对尿素装置在用换热器管子进行测厚及探伤的原理及方法。
The paper introduced the principle and method of measuring the thickness and inspecting the defect with electromagnetic eddy current testing for tubes of in-service heat exchanger in urea plant.
本文介绍了用电磁涡流法对尿素装置在用换热器管子进行测厚及探伤的原理及方法。
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