Conductive Biomaterial Inhomogeneities Modeling in Electromagnetic Nondestructive Evaluation

A three-dimensional numerical modeling is an appropriate tool for analyzing and estimating of the physical material properties in general. This article is focused on the modeling of inhomogeneities in the austenitic stainless steels, which are used as biomaterials. These materials can interact with a biological tissue inside a human body. In addition, these steels are also widely used in many industry and transport sectors. Three fundamental inhomogeneity models were created for this purpose. The models correspond to the real inhomogeneities that may occur in these materials (fatigue and stress-corrosion cracks). Third model is the artificial one, used as the reference sample. The all models are investigated by the eddy current testing method which is theoretically well-known and described for investigation of conductive biomaterials. The results of numerical simulation are presented and discussed in this paper.