Eddy current inspection is one of the five main non-destructive testing (NDT) methods in the industry, alongside liquid penetrant, magnetic particle, ultrasonic, and radiographic testing. Due to its complex theoretical basis, it is the least used and hardest to understand.
The continuous ground-breaking advances in the aerospace industry put more and more pressure on nondestructive testing (NDT) equipment manufacturers to be proactively solving new inspection challenges. As such, the recent advances in eddy current array (ECA) have considerably expanded the range of components and assets that can be inspected for surface and near-surface flaws.
To a qualified and well-equipped nondestructive testing technician, few inspections present an insurmountable technical hurdle. Technicians have a range of testing methods at their disposal, from sophisticated ultrasound and eddy current technologies to manual processes like liquid penetrant.
Eddy current array (ECA) technology has long been used for nondestructive testing in aerospace, power generation, oil and gas, and other industrial applications. It’s a fast, accurate, chemical-free method for detecting surface and sub-surface indications including cracks, pits, corrosion, and damage due to temperature or fatigue.
Conventional eddy current technology has been used for many years to inspect the surfaces and subsurfaces of various components across a wide range of industries.