. The development of ~n eddy current testing system is described which encloses a 4-frequency test dev1ce as well as extens1ve computer programs to optimize layout and adaptation to practical problems. Results obtained on the testing of welds and heat exchanger tubes are presented. The testing aim is to detect defects and to determine their type and size.

The paper presents an eddy current tomography setup with high spatial resolution and high accuracy of measurements of signal on detection coil. In proposed solution both amplitude as well as phase shift are measured, which gives the possibility of calculation of spatial distribution of both permeability and resistivity of tested element. As a result, presented setup creates possibility of effec...

Introduction: High-performance RF coils and shielded Gradient coils [1] for high or ultra high field MRI often require the use of RF shields that are in close proximity to the imaged volume. These shields can sometimes generate Eddy-Currents that are not adequately compensated for using the pre-emphasis algorithm [2] of the scanner. K-space trajectory measurements [3] can be used to compensate ...

This paper proposes a special eddy current transducer, send receive type and a holographic method for signal processing, able to emphasize the delaminations and massive breaking zones in carbon fibres. To evaluate individual fibres breaking, a eddy current microscopy method is proposed.