Multi-Frequency Eddy Current Analysis
Eddy current multifrequency analysis uses multiple frequencies for testing to filter out interference and better detect deep material damage.
Physical-Chemical Operating Principle
Eddy-current multifrequency analysis uses various frequencies to penetrate the material. Each frequency reacts differently to the material structure and interfering factors like lift-off variations. By analyzing the different frequency responses, you can mathematically filter out interferences.
Metallurgical Relevance & Welding Risks
This method boosts accuracy in detecting deeper-lying material damage and discontinuities. However, it can also lead to interpretation complexity when not used correctly. Incorrect settings can cause inaccurate results or even misinterpretation.
Workshop Practice & Action Guidelines
To successfully use eddy-current multifrequency analysis, follow these steps:
1. Use a device with multi-frequency options.
2. Calibrate the device on a known standard material before testing.
3. Choose the appropriate frequency or a combination of frequencies based on the material being tested and the desired detection depth.
4. Carefully analyze the results; watch for unusual patterns or deviations.