Studies on Practical Application of Magnetic Sensor using Rotational Magnetic Flux and Non-destructive Testing System

旋转磁通磁传感器的实际应用研究及无损检测系统

• 批准号: 03555086
• 负责人: ENOKIZONO Masato
• 金额: $ 4.86万
• 依托单位: Oita University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03555086/
• 关键词: Non-Destructive Testing; Magnetic Senser; Rotational Magnetic Flux; Neural Network; Lissajous's Figure; Barkhausen Noise; Acoustic Analysis; Fatigue; 2次元磁気センサ-; 形状推定; ニュ-ロ

Studies on practical application of the magnetic sensor using rotational magnetic flux and non-destructive testing (NDT) system have been curried out. The summary of the results is shown below. (1) Nondestructive testing with magnetic sensor using rotational magnetic flux.In conventional eddy current NDT's, the magnetic sensor has been driven by dc or alternative current. Therefore, the generated magnetic field in magnetic materials is arranged in one direction. However, in order to estimate shape or position of an unknown defect, a two-dimensional alternating magnetic flux density vector is necessary. We have proposed the NDT system using rotational magnetic flux. In this system, the magnitude and phase value are obtained as the signals of defect. (2) Rotational magnetic sensor with neural network for non-detractive testing.In application of the sensor for NDT system, we have developed a new NDT method with neural network. In this system, the magnitude and phase value are measured and … More used to obtain information about defect. These values include the information about the shapes or positions of an unknown defect. We applied a neural network technique to estimation of a defect shape. We have reported that the estimated defects show good agreement with the given one in a simple example. (3) Acoustic analysis of the Barkhausen noise in stressed magnetic material.Because increase of fatigue in magnetic materials is known as a cause of breakdown of material, developing techniques in detecting fatigue before breakdown are very important. For the detection of flaw in the magnetic materials with NDT, we notice the Barkhausen noise occurred in magnetizing proses of ferromagnetic materials. We have investigated acoustic analyses of the noise on sample materials with thermal fatigue. As acoustic analyses, obtaining power of the waveform, zero crossing rate analysis and frequency analysis are performed. These results showed that the fatigue of the materials and spectral feature of the noise were closely concerned. We have reported that The Barkhausen noise gets similar to the white noise with increasing the fatigue of the specimen. Less

使用转子磁通量和非破坏性测试（NDT）系统对磁性传感器实际应用的研究已被批准。结果的摘要如下所示。 （1）使用转子磁通量对磁性传感器进行无损测试。在常规的涡流NDT中，磁性传感器已由直流或替代电流驱动。因此，磁性材料中产生的磁场在一个方向上排列。但是，为了估计未知缺陷的形状或位置，必须使用二维替代磁通量密度向量。我们已经使用旋转磁通量提出了NDT系统。在该系统中，获得的大小和相值是作为缺陷的信号。 （2）使用神经元网络进行非渗流测试的旋转磁传感器。在NDT系统的传感器应用中，我们开发了一种使用神经元网络的新NDT方法。该系统，幅度和相值的测量和……更多用于获取缺陷的信息。这些值包括有关未知缺陷的形状或位置的信息。我们将神经元网络技术应用于缺陷形状的估计。我们报告说，估计的缺陷在一个简单的示例中与给定的缺陷表现出了很好的一致性。 （3）应力磁性材料中Barkhausen噪声的声学分析。由于磁性材料中疲劳的增加被称为材料分解的原因，因此在分解前检测疲劳的技术非常重要。为了检测具有NDT的磁性材料中的缺陷，我们注意到Barkhausen噪声发生在铁磁材料的磁性收益中。我们已经研究了具有热疲劳样品材料上噪声的声学分析。随着声学分析，获得波形的功率，进行了零交叉分析和频率分析。这些结果表明，噪声的材料和光谱特征的疲劳密切关注。我们报告说，随着标本的疲劳，Barkhausen噪声与白噪声相似。较少的

项目成果

M.Enokzono,T.Todaka,M.Akita and S.Nagata: "Ratational Magnetic Sensor with Neural Network for Non-destructive Testing" IEEE Trans.on Magnetics(Intermag Conference)to be published. (1993)

M.Enokzono、T.Todaka、M.Akita 和 S.Nagata：“用于无损检测的神经网络理性磁传感器”IEEE Trans.on Magnetics（Intermag Conference）即将出版。

S.Nagata and M.Enokizono: "Magnetic Sensor using Rotational Magnetic Flux for Tubular Material" Elsevier Studies in applied Electromagnetics in Materials. vol.4. (1993)

S.Nagata 和 M.Enokizono：“使用旋转磁通量检测管状材料的磁传感器”爱思唯尔材料应用电磁学研究。

Masato ENOKIZONO: "Rotational Magnetic Sensor with Neural Network for Non-destructive Testing" IEEE Trans.on Magnetics (Proc.of Intermag Cont.). (1993)

Masato ENOKIZONO：“带有用于无损检测的神经网络的旋转磁传感器”IEEE Trans.on Magnetics (Proc.of Intermag Cont.)。

Masanori Akita: "Acoustic Analysis of the Barkhausen Noise in Stressed Magnetic Materials" Elsevier Studies in Applied Electromagnetics in Materials,(Proc.of ISEM-Sappro). 4. (1993)

Masanori Akita：“应力磁性材料中巴克豪森噪声的声学分析”爱思唯尔材料应用电磁学研究，(Proc.of ISEM-Sappro)。

M.Akita M.Enokizono: "Acoustic Analysis of the Barkhausen Noise in Stressed Magnetic Materials" ISEM-Sapporo,(International Symprsium on electomagetics). (1993)

M.Akita M.Enokizono：“受力磁性材料中巴克豪森噪声的声学分析”ISEM-Sapporo（国际电磁学研讨会）。