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。
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。
It is found that the method converges rapidly and is efficient for determining magnetic filed and eddy current in two dimension nonlinear ferromagnetic materials.
二维非线性磁场问题的计算表明，这一方法收敛很快，是求解非线性磁场和涡流问题的一种有效解析法。
Compared with the analytical and experimental results, it is confirmed that the permanent magnet eddy-current brake is an effective braking method and FEM is suitable for analyzing it.
实验结果和理论分析表明永磁涡流制动是一种高效可靠的制动方法。通过与解析法和实验结果的比较，证明用有限元法分析永磁涡流制动的可行性和准确性。
The principle of electric eddy current sensors is introduced. The method to measure displacement using an electric eddy current sensor is given.
本文简单介绍了电涡流传感器的原理，给出了利用电涡流传感器测量位移的方法。
Eddy current is an effective method in which the most difficult task is the processing of the signal.
然而用涡流法对它进行检测的最大难度在于检测信号的处理。
Finally, the mechanisms of eddy current, measurement of eddy current and the method of eddy current compensation are discussed.
最后针对成像中的涡流问题进行讨论，包括涡流的产生机制、涡流大小的测量和涡流补偿的方法。
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 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。
A new method of on line nondestructive testing for the flaws on graphite spheres surface with electromagnetic eddy current is stated.
描述了一种新的利用电涡流进行石墨球表面缺陷检测的在线无损检测方法。
This paper analyses some important factors which cause discretization error in linear eddy-current problems by the finite element method.
本文以一个典型二维涡流场问题作为计算实例，分析了■有限元法求解线性涡流场时产生离散误差的主要因素。
In order to evaluate the residual fatigue life of end-of-life crankshaft, this paper proposed a new testing method based on eddy current and magnetic memory method.
为了对退役曲轴再制造前的剩余疲劳寿命进行评估，提出了一种基于涡流和磁记忆法的退役曲轴检测方法。
The research of this paper will bring a feasible method to solve the problem of energy waste on the eddy current retarder.
本文的研究将为解决电涡流缓速器能量浪费问题带来一个较为可行的方法。
The characteristics of eddy current retarder were analyzed at low and high velocity respectively. A selecting method for switch point between mathematical model and neural network was proposed.
分析了电涡流缓速器的输出制动力矩在低、高速时的特性，提出了数学模型与神经网络模型切换点的选择方法。
The principle of paper thickness on-line measurement using displacement differential method based on laser displacement sensor and electric eddy current displacement sensor is introduced.
介绍了基于激光位移传感器与电涡流位移传感器的位移差动法在线检测纸坯厚度的原理及测量系统的软硬件设计。
The method shown in the paper will provide useful value of the application in designing the eddy current braking device.
文中的计算方法将为设计涡流制动装置时提供有用的应用价值。
Second, analyzes the pulsed eddy current impedance model in detail, improves simulation of pulsed eddy current method of calculating, and carries out thickness, ranging simulation.
其次，详细分析脉冲涡流检测的阻抗模型，改进了脉冲涡流仿真计算方法，并进行了测厚、测距的仿真实验；
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。
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。
The general eddy current flaw reconstruction strategy was the least-square error method, which required the forward solver having high speed.
在涡流检测中，常利用最小方差法来进行缺陷重构，这种方法要求正问题的求解效率高。
The distributed heat source is first calculated by a tight coupled field-circuit method, including eddy current loss, iron loss and copper loss.
首先用场路紧密耦合方法分析电机的分布热源，包括涡流损耗、铁损和铜损。
On this basis and the magnetic field distribution is solved by means of analytical method and the eddy current loss of sealing cover is calculated.
在此基础上采用解析法计算了密封电机的磁场分布，并由此求出了密封套的涡流损耗。
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。
A method of measuring rotational speed using eddy current transducer and PCI - 9118dg data acquiring card is introduced in this paper.
研究了一种利用电涡流传感器和PCI- 9118DG数据采集卡测量转速的方法。
The current of the rotor slot wedges are measured by magnetic test coils, and the eddy-current field of the rotor are calculated by finite element method.
试验中用“磁带”测量了转子槽楔电流，并用有限元法计算了转子涡流场。
Second order partial differential equations were given. They were solved by one-dimension method and analytical solutions for magnetic field and eddy current were obtained.
列出二阶偏微分方程，采用一维方法求解得到了磁场、涡流的解析表达式。
This paper suggests a method for measuring the thickness of metal plate for working pieces on line using the eddy current sensors without any damage.
提出一种用电涡流传感器实现无损在线测量工件金属膜厚度的方法。
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。
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。
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