Investigating the Polarization Tensor to Describe and Identify Metallic Objects

This paper presents a few properties of the polarization tensor for conducting and magnetic objects to describe and classify the objects. In order to achieve this, the polarization tensor of the objects are numerically determined by the previous hp-FEM method. We then focus on the polarization tensor for magnetic but non-conducting objects. After that, the polarization tensor for translated and rotated objects are discussed. Finally, this paper also highlights the polarization tensor for a few threat and non-threat objects which might appear in metal detection for security screening and landmine clearance.