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Simultaneous measurement of size and electromagnetic property of multilayered spherical sample

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4 Author(s)
Yamazaki, S. ; Kogakuin Univ., Tokyo, Japan ; Nakane, H. ; Negishi, T. ; Tanaka, A.

Basic theoretical analyses to detect undesirable foreign metal pieces in the meat being processed have already been carried out. In this study, taking the low conductivity of meat into account, a double-layered spherical sample structure which enables easy analyses was selected. In order to detect these conductive materials, analyses of the difference in the impedance of a circular coil with, and another one without, a double-layered spherical conductor were made. In this way, a new formula for obtaining the electromagnetic properties of a double-layered spherical sample was derived. The process of deriving the new formula is explained. The calculated value was compared with the experimental value. Their values had a close correlation

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Instrumentation and Measurement, IEEE Transactions on  (Volume:47 ,  Issue: 5 )