What is a common challenge when using Eddy Current Testing on rough surfaces?

When using Eddy Current Testing on rough surfaces, the introduction of noise affecting detection sensitivity is a common challenge. Rough surfaces can create variations in the magnetic field and disrupt the flow of eddy currents. This disruption can lead to inconsistent readings, as the scattering of the eddy currents may result in a complex response from the testing instrument. As a result, noise levels can increase, making it more difficult to distinguish between actual signals indicating defects and unwanted interference caused by surface roughness. This sensitivity to noise can compromise the reliability of the inspection, making it challenging to accurately assess the integrity of the material being tested.