Evaluations of Iron-based Material Expressed by Magnetic Transfer Function

• Autorzy: Yamada, K. , Luo, J. , Shimoji, H. , Nakahata, Y. , Borkowski, B.E. , Todaka, T. , Enokizono, M.

Warianty tytułu

PL

Ocena materiału ferromagnetycznego wyrażona przez funkcję przetwarzania

• Języki publikacji: EN

Abstrakty

EN

We have been investigated a basic concept of material constant evaluation using transformer type probes in an a.c. field range between 20Hz and 200kHz. The probes are consisted of 2 transformers with open magnetic poles attached to the material surface under estimation and attached to the reference material, respectively. The output voltage of each transformer is connected in series and reverse to cancel the offset voltage caused by the leakage flux. The analyses are performed by using a.c. magnetic resistance theory of magnetic circuit. We attained the high sensitivity of conductivity and permeability changes in the material without direct contact as that in d.c. measurements. The transfer function of material in general was defined by the experimental results of the excitation current of the probe, operation frequency and the output voltages, independent of the characteristics of the transformer materials.

PL

Badano koncepcję stałej materiałowej przy badaniu próbki transformatorowej w pasmie 20 Hz do 200 kHz. Próbka składała się z dwóch otwartych transformatorów, z których jeden przyłożony był doi badanego materiału a drugi do materiału porównawczego. Wyjścia połączono szeregowo i przeciwsobnie. Określono funkcję przetwarzania umożliwiającą ocenę badanego materiału.

Słowa kluczowe

PL

badania nieniszczące; materiał ferromagnetyczny; elektrotechnika; elektroenergetyka

EN

NDE; iron-based material; non-contacting probe; ac magnetic probe; eddy current; permeability; electrical technology; electrical power engineering

• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2011
• Tom: R. 87, nr 9b
• Strony: 85-88
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr.

Twórcy

autor

Yamada, K.

autor

Luo, J.

autor

Shimoji, H.

autor

Nakahata, Y.

autor

Borkowski, B.E.

autor

Todaka, T.

autor

Enokizono, M.

• Open Innovation Center, Saitama University, 255 Shimo-ohkubo, Sakura-ku, Saitama City, 338-8570, Saitama,

Bibliografia

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• [3] S. Shoji, Doctor Thesis (in Japanese), Saitama Univ., March (1999)
• [4] K. Yamada, S. Shoji, K. Yamaguchi and Y. Tanaka, “Fractal Dimension of Magnetic Noises :A Diagnosis Tool for Nondestructive Testing”, Studies in Applied Electromagnetic and Mechanics No13, IOS Press Tokyo, ed. by Kose and J. Sievert (1998), pp153-156
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• [6] K. Yamada, S. Shoji, Y. Tanaka, Y. Uno, H. Takeda, M. Uesaka and K. Miya,, “Nondestructive Evaluation of Iron-based Material by Magnetic Sensor”, Proc. of the “2nd Int. Workshop on Advanced Mechatronics” (IWAM’97), Nagasaki (1997),pp114-119
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• [8] N. Hagiwara, N. Fukuda, T. Masuda and K. Yamada, “Nondestructive Evaluation of Plastic Strain in Pipeline Using Barkhausen Noises”, Proc. Workshop on Magnetism and Lattice Imperfections, Hanamaki, Iwate, April(2000), pp97-100
• [9] M. Uesaka, T. Sukegawa, K. Miya, S. Takahashi, J. Echigoya, K. Yamada, N. Kasai, K. Morishita, K. Ara, N. Ebine and Y. Isobe, “Round-robin test work for magnetic nondestructive evaluation of structural materials in nuclear power plants”, Proc. Workshop on Magnetism and Lattice Imperfections, Hanamaki, Iwate, April (2000),pp59-65
• [10] K. Yamada, K. Yamaguchi, S. Toyooka and Y. Isobe, Magnetic and Optical Nondestructive Evaluation for Iron-based Materials”, Nondestructive Characterization of Materials X, Ed. By R.E. Green et al., Elsevier Publ., Karuizawa, Japan, June(2000), p333-340
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• [12] K. Yamaguchi, K. Yamada and Y. Isobe, “Monte-Carlo Simulation of Magnetization Processes including Lattice Imperfections”, Proc. Int. Meeting on the relationship between Lattice Imperfection and Magnetism, Hanamaki, Iwate,April,(2000), pp69-71.
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• [16] Koji Yamada et.al. to be pub. In selected paper in the post publication of ICST2010, June 2010, Lecce, Italy
• [17] Bing Liu, Doctor Thesis, Saitama University, March (2006).
• [18] Koji Yamada et. al., to be published in the selected paper in ICST (2010) June 2010, Lecce, Italy