1998 Fiscal Year Final Research Report Summary
Standard measuring method of amorphous magnetic materials
| Project/Area Number |
09044184
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Field |
電力工学・電気機器工学
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| Research Institution | Kanto Gakuin University |
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Principal Investigator |
NAKATA Takayoshi Kanto Gakuin University, College of Engineering, Professor, 工学部, 教授 (50032925)
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| Co-Investigator(Kenkyū-buntansha) |
SIEVERT J. 物理工学研究所, 磁気測定研究室, 室長
MOSES A.J. University of Wales College of Cardiff, Wolfson Center for Magnetics Technology,, 所長
FIORILLO F. 国立電気工学研究所, 材料研究部, 部長
CORNUT Bruno Institut National Polytechnique de Grenoble, Laboratoire D'Electriciens de Greno, 電気工学研究科, 教授
ISHIHARA Yoshiyuki Doshisha University, Faculty of Engineering, Professor, 工学部, 教授 (00032938)
FIORILLO Fausto Institute Elettrotecnico Nazionale Galiles Ferraris, Materials Department, Head
SIEVERT Johannes Physikalisch-Technische Bundesanstalt, Magnetic Measurements Laboratory, Head
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| Project Period (FY) |
1997 – 1998
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| Keywords | Amorphous / Magnetic measurement / Single sheet tester / Automatic measurement / Digital feed back / Reproducibility / h-coil method / Earth magnetism |
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| Research Abstract |
(1)The double yoke type single sheet tester (SST) is best from the view point of demagnetization of the magnetic circuit.
(2)The H-coil method which is popular in Japan is superior to the magnetizing coil method (MC method) of which magnetic characteristics are strongly influenced by the construction of the yoke.
(3)The digital feed back method is better than the analogue feed back method to control the flux waveform. The waveform control at high flux density is difficult by the analogue method.
(4)The data averagings of 150 to 200 times of the flux density and the magnetic field (strength are useful for eliminaiing the noise in signals which are very low.
(5)The phase differences between output and input should be the same for the B-measunng circuit and the H-measuring circuit
(6)The direction of the SST against earth magnetism should be examined carefully.
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