What is the typical frequency range utilized in Eddy Current Testing?

The typical frequency range utilized in Eddy Current Testing spans from a few Hertz to several megahertz. This range is chosen because it allows for effective detection of surface and near-surface defects in conductive materials. Frequencies in the lower part of this range are effective for deep penetration into materials, making it suitable for thicker sections, whereas higher frequencies are better suited for detecting smaller flaws and assessing surface conditions.

Utilizing frequencies from a few Hertz up to several megahertz provides a versatile approach in various applications, including inspecting aerospace components, automotive parts, and other critical infrastructure materials. This flexibility is essential in industries where material integrity is paramount for safety and performance, such as in aerospace and nuclear sectors. The range effectively balances sensitivity and resolution, enabling technicians to obtain accurate and reliable assessments of the structural integrity of materials being tested.