Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic Sensor
The thin film magneto-impedance sensor is useful for detecting a magnetic material nondestructively. The sensor made by single layer uniaxial amorphous thin film has a tolerance against surface normal magnetic field because of its demagnetizing force in the thickness direction. Our previous study pr...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/12/4063 |
| _version_ | 1797530351364472832 |
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| author | Tomoo Nakai |
| author_facet | Tomoo Nakai |
| author_sort | Tomoo Nakai |
| collection | DOAJ |
| description | The thin film magneto-impedance sensor is useful for detecting a magnetic material nondestructively. The sensor made by single layer uniaxial amorphous thin film has a tolerance against surface normal magnetic field because of its demagnetizing force in the thickness direction. Our previous study proposed the sensitive driving circuit using 400 MHz high frequency current running through the sensor to detect the logarithmic amplifier. We also confirmed the sensitivity of the sensor within 0.3 T static normal magnetic field, which resulted in detection of 5 × 10<sup>−8</sup> T of 5 Hz signal. This paper proposes a nondestructive inspection system for how detecting a contaminant of small tool steel chipping in aluminum casting specimen would be carried out. Three channel array sensors installed in the 30 mT static field detecting area were fabricated and experimentally showed a detection of low remanence magnetic contaminant in a bulk aluminum casing specimen. |
| first_indexed | 2024-03-10T10:27:40Z |
| format | Article |
| id | doaj.art-bb4236807451428fb6180a126b228b94 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T10:27:40Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-bb4236807451428fb6180a126b228b942023-11-21T23:54:30ZengMDPI AGSensors1424-82202021-06-012112406310.3390/s21124063Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic SensorTomoo Nakai0Industrial Technology Institute, Miyagi Prefectural Government, Sendai 981-3206, JapanThe thin film magneto-impedance sensor is useful for detecting a magnetic material nondestructively. The sensor made by single layer uniaxial amorphous thin film has a tolerance against surface normal magnetic field because of its demagnetizing force in the thickness direction. Our previous study proposed the sensitive driving circuit using 400 MHz high frequency current running through the sensor to detect the logarithmic amplifier. We also confirmed the sensitivity of the sensor within 0.3 T static normal magnetic field, which resulted in detection of 5 × 10<sup>−8</sup> T of 5 Hz signal. This paper proposes a nondestructive inspection system for how detecting a contaminant of small tool steel chipping in aluminum casting specimen would be carried out. Three channel array sensors installed in the 30 mT static field detecting area were fabricated and experimentally showed a detection of low remanence magnetic contaminant in a bulk aluminum casing specimen.https://www.mdpi.com/1424-8220/21/12/4063magnetic thin filmmagneto-impedance sensorhigh frequencysurface normal magnetic fieldnondestructive inspectiontool steel chipping |
| spellingShingle | Tomoo Nakai Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic Sensor Sensors magnetic thin film magneto-impedance sensor high frequency surface normal magnetic field nondestructive inspection tool steel chipping |
| title | Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic Sensor |
| title_full | Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic Sensor |
| title_fullStr | Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic Sensor |
| title_full_unstemmed | Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic Sensor |
| title_short | Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic Sensor |
| title_sort | nondestructive detection of magnetic contaminant in aluminum casting using thin film magnetic sensor |
| topic | magnetic thin film magneto-impedance sensor high frequency surface normal magnetic field nondestructive inspection tool steel chipping |
| url | https://www.mdpi.com/1424-8220/21/12/4063 |
| work_keys_str_mv | AT tomoonakai nondestructivedetectionofmagneticcontaminantinaluminumcastingusingthinfilmmagneticsensor |