The paper presents and compares three potential formulations to solve nonlinear static magnetic field problems by applying the fixed-point technique and the Newton-Raphson scheme. Nonlinear characteristics have been handled by the polarization method in the two algorithms. The proposed combination of Newton-Raphson scheme and the polarization formulation result in a very effective nonlinear solver, because only the derivate of the characteristics, i.e. only the permeability or the reluctivity has to be used. That is why, this method can be prosperous to solve nonlinear problems with hysteresis, and it is faster than the classical fixed-point method.
The paper reports about the building up a computer controlled measurement system based on National Instruments Data Acquisition card and National Instruments LabVIEW software package. The aim of this research is to detect manufactured surface cracks on steels by applying a magnetic flux leakage testing method. First of all, a finite element method based on the procedure to analyze the behavior has been implemented of the measurement system under construction. One important question is the position of the sensors or of the detecting coils. The finite element procedure contains a two dimensional arrangement. First, eddy currents have been neglected, but the nonlinear characteristic of the specimen has been taken into account by a single valued function. In this paper, the developed measurement system, which is partially ready to work, and the nonlinear finite element procedures are presented as well.
Republic , Aug. 30-Sept. 4, 2015, 2015 , pp. 905 – 908 .  M. Kuczmann , “ Nonlinearfiniteelementmethod in magnetism ,” Pollack Periodica , vol. 4 , no. 2 , pp. 13 – 24 , 2009 . 10.1556/Pollack.4.2009.2.2  G. Kovács and M. Kuczmann
this paper is modeling and simulating the closing process of a plastic box buckle using nonlinearFiniteElementMethod (FEM), then to compare the results obtained via an industrial robot. An intelligent end-effector has been developed, which contains a