Multi-Frequency Eddy Current Testing
Variable frequency eddy current technology uses multiple excitation frequencies simultaneously to minimize surface defects and deep inhomogeneities. This reduces interference from lift-off variations.
Physical-Chemical Mechanism of Action
Variable frequency eddy current technology (VFECT) operates with multiple excitation frequencies that are active simultaneously. These different frequencies can compensate for each other and neutralize interference factors such as lift-off variations.
Metallurgical Relevance & Risks in Welding
The use of VFECT improves the quality of the weld by minimizing surface defects and deep inhomogeneities. This leads to higher toughness and better mechanical performance of the weld. However, unfavorable use can lead to increased complexity in machine control and potential operational issues.
Workshop Practice & Instructions
To successfully use VFECT, it is important to have the machine properly calibrated and the frequency parameters carefully set. The chosen frequencies should be selected to optimally support the specific conditions of the welding pass. Regular maintenance of the machine is essential to ensure that all components function correctly.