Development of The High Grade Magnetic Diagnosis System Using The New Rotational Magnetic Flux Sensor for Non-destructive Testing

采用新型旋转磁通传感器进行无损检测的高级磁诊断系统的开发

基本信息

批准号：
09650500
负责人：
OKA Mohachiro
金额：
$ 0.32万
依托单位：
Oita National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

In this project, we developed fore types of magnetic sensors such as the rotational magnetic flux sensor with the three axis search coil, the rotational magnetic sensor with the three axis search coil using exciting cores made of the silicon steel sheet, the differential type of the rotational magnetic flux sensor with the three axis pickup coil and the differential type of the rotational magnetic flux sensor with two three axis search coils. They showed good performance to detect a small reverse-side defect existing on the thick steel plate or the tick stainless steel plate. The non-destructive evaluation system which consisted of the rotational magnetic flux sensor and the neural network could automatically estimated reverse-side defect properties such as the position, the depth. the inclination angle and the shape. And we developed the measurement system for the rotational Barkhousen noise. Results of this project are shown as follows :1) All types of sensors for a 5 mm thick steel … More plate can clearly detect a 2 mm depth reverse-side defect. The differential type of the rotational magnetic flux sensor with two three axis search coils can detect a I mm depth reverse-side defect.2) The low exciting frequency is useful for estimation of the small reverse-side defect.3) They show good signal to noise ratio.4) All types of sensors for a 5 mm thick stainless steel plate can distinguish different shapes of the reverse-side defects.5) The three axis output signals from these sensors contain useful information about the reverse-side defect properties.6) Results of automatic estimation of defect properties using the NDE system show good agreement with the given ones generally.7) The results showed that the Barkhousen noise was able to be continuously generated in a rotational magnetic field and the signal had information of defects or flows in measuring materials.8) The attractors of Barkhousen noise under some rotating and alternating magnetic field conditions are investigated to make clear the existence of Chaos in the signals.We were able to develop the very useful NDE system to detect and to estimate reverse-side defects existing on a thick metallic plate. Less

在这个项目中，我们使用由三个轴搜索线圈，带有三个轴搜索线圈的转子磁性传感器（旋翼磁通量传感器）开发了前前类型的磁性传感器，使用由硅钢板制成的激动人心的芯子，带有三个轴拾音器线圈的旋转器磁力传感器的差速器类型的差速器类型，并带有三个磁极磁性传感器，并带有三个轴的差速器。他们表现出良好的性能，可以检测到厚钢板或tick不锈钢板上存在的小反向侧缺陷。由转子磁通传感器和神经网络组成的非破坏性评估系统可以自动估计反向侧缺损特性，例如位置，深度。倾斜角度和形状。我们开发了转子Barkhousen噪声的测量系统。该项目的结果如下：1）5毫米厚的钢的所有类型的传感器……更多的板可以清楚地检测到2 mm深度反向侧缺损。带有两个三个轴搜索线圈的旋转磁通传感器的差异类型可以检测一个I mm深度逆时缺陷。2）低令人兴奋的频率可用于估算小的反向侧缺陷。3）它们显示出良好的信号。 6）使用NDE系统自动估算缺陷属性的结果与给定的结果非常吻合。信号中的混乱。我们能够开发出非常有用的NDE系统，以检测并估计厚金属板上存在的反向侧缺陷。较少的