Theoretical analysis of magnetic sensor output voltage |
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| Authors: | Haishun Liu Chaochao DunLinming Dou Weiming Yang |
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| Institution: | a School of Sciences, China University of Mining and Technology, Xuzhou 221116, China
b State Key Laboratory of Coal Resource and Mining Safety, China University of Mining and Technology, Xuzhou 221008, China |
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| Abstract: | The output voltage is an important parameter to determine the stress state in magnetic stress measurement, the relationship between the output voltage and the difference in the principal stresses was investigated by a comprehensive application of magnetic circuit theory, magnetization theory, stress analysis as well as the law of electromagnetic induction, and a corresponding quantitative equation was derived. It is drawn that the output voltage is proportional to the difference in the principal stresses, and related to the angle between the principal stress and the direction of the sensor. This investigation provides a theoretical basis for the principle stresses measurement by output voltage. |
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| Keywords: | Stress measurement Nondestructive evaluation Output voltage Principal stress Magnetic method |
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