Eddy current (EC) testing, a sophisticated non-destructive evaluation technique, harnesses the principles of electromagnetism to scrutinize the integrity of conductive materials. By inducing an alternating magnetic field, EC testing generates electrical currents within the material under examination. Any alterations in the current flow, induced by geometric irregularities, material variations, or the presence of discontinuities such as pitting, erosion, corrosion, or cracking, disrupt the eddy current flow pattern. This disruption is meticulously analyzed to identify and characterize potential defects, including sub-surface cracks and flaws that may compromise structural integrity.

EC testing is particularly adept at inspecting non-magnetic (non-ferrous) and slightly magnetic alloys, offering unparalleled sensitivity to minuscule defects like stress corrosion cracking. However, the interpretation of EC data demands a nuanced understanding of signal formations and complex analysis techniques. To ensure accurate and reliable assessment, TechCorr provides certified inspectors with extensive experience and expertise in EC testing methodologies.

One of the major advantages of eddy current as an NDT tool is the variety of inspections and measurements that can be performed. EC gives immediate results and is widely used within the commercial, military, petrochemical, aircraft and aerospace industries. In the proper circumstances, eddy current can also be used for material or coating thickness measurements, heat damage detection, and conductivity measurements for material and alloy identification.