| 1. | The far field eddy current testing system for trial was developed
建立了试验远场涡流检测系统。 |
| 2. | Research of digital phase signal detecting in remote field eddy current detecting
远场涡流检测中的数字相敏检波器的研究 |
| 3. | Performance improvement of remote field eddy current detection for ferromagnetic tubes corrosion
铁磁性管道腐蚀远场涡流检测性能的改进 |
| 4. | The design and realization of remote field eddy current system used for in - line inspecting of ferromagnetic pipe
铁磁性管道的远场涡流检测系统的设计与实现 |
| 5. | Further applications of remote field eddy current technology are restricted by some disadvantages such as weak signal , over - long sensor
摘要远场涡流检测由于信号微弱、探头过长等缺点限制了其进一步应用。 |
| 6. | Remote - field eddy current - based non - destructive inspection technology has been widely used in advanced nations with significant effectiveness
远场涡流检测技术在国外发达国家中已充分应用于现场，且收效显著。 |
| 7. | In order to effectively inspect all kinds of defects and to improve the sensitivity and accuracy of inspection , the far field eddy current testing system should be improved further
为了达到对各种形状缺陷的有效诊断，提高检测灵敏和准确性，还需进一步改进和完善远场涡流检测系统。 |
| 8. | The authors have made an analytical study of the theory of the above - mentioned technology and reported its effective use for the first time in the quality inspection of steel tubes of a high - pressure heater for a 600 mw power plant
本文针对远场涡流检测技术的理论作了分析研究，并介绍首次应用在国产60万千瓦机组的高压加热器钢管的质量检验中所取得的良好效果。 |
| 9. | Firstly , the basic character of the remote filed eddy current is simulated and analyzed in case of two - dimension axial symmetry which approves the existence of remote filed eddy current phenomenon ; the full circumferential defect model is investigated to approve the feasibility of using the rfec techniques to detect the position and depth of defect ; the pit corrosion 、 circumferential and axial crack models are simulated , and the defect character based on voltage plane polar plot and the changes of phase and amplitude are analyzed to supply the standard for defect reconfiguration
首先,在二维轴对称情况下仿真与分析了远场涡流的基本特性,证实了远场涡流现象的存在;对全周向缺陷的远场涡流检测进行了详细研究,证实了远场涡流检测缺陷位置和深度的可行性;对点状腐蚀、轴向与周向裂纹三种非轴对称缺陷进行三维有限元仿真,利用相位差和幅值变化曲线与电压平面极坐标图对缺陷特征进行分析,为缺陷形状重构提供了依据。 |
