Probe Frequency
The probe frequency indicates how often the alternating field reverses in NDT (non-destructive testing). A higher frequency increases resolution and allows more precise detection of flaws or cracks.
Physical-Chemical Mechanism of Action
The probe frequency determines how fast the electromagnetic alternating field reverses in NDT. A higher frequency means faster field switching, which gives you higher resolution.
Metallurgical Relevance & Welding Risks
Too low a frequency can leave smaller flaws or cracks not sharp enough to be detected. Too high a frequency boosts resolution but can also amplify the signal and cause false alarms.
Workshop Practice & Action Instructions
Set the probe frequency depending on the material and the inspection task. For thin layers or fine details, use a higher frequency (e.g., 5 MHz); for thick sections or coarse structures, use a lower frequency (e.g., 0.5 MHz).