19 April 2013 Improved modeling of magnetic impedance sensing system for damage detection
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Abstract
Magnetic transducers have been applied in a number of diverse fields including non-contact measurement, active damping and non-destructive evaluation. Recently, due to the magneto-mechanical coupling characteristics between a magnetic transducer and the underneath metallic structure, such type of transducers is employed in impedance-based damage detection schemes, which can facilitate damage detection in a non-contact manner, and have potential advantages in monitoring structures with complicated geometries and boundaries. In this research, we formulate detailed first-principle-based modeling of the magnetic impedance transducer. In particular, we focus on accurately modeling the coupling between the impedance of the magnetic transducer and the electrical and structural impedance of the host metallic structure. The modeling and analysis are validated by experimental studies.
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Q. Shuai, J. Tang, "Improved modeling of magnetic impedance sensing system for damage detection", Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 86920M (19 April 2013); doi: 10.1117/12.2009904; https://doi.org/10.1117/12.2009904
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