Eddy Current Testing (ET)

Overview

Eddy Current Testing (ET) is a highly specialized electromagnetic non-destructive testing technique utilized for inspecting electrically conductive materials. In the domain of crane maintenance and structural integrity, ET offers a distinct and powerful advantage: the ability to detect surface and near-surface cracks without the need to remove non-conductive surface coatings such as paint or epoxy. An alternating current is passed through a probe coil, creating an alternating magnetic field that induces localized electrical currents—eddy currents—within the test material. When these eddy currents encounter a discontinuity, such as a fatigue crack in a structural weld, their flow is disrupted. This disruption alters the impedance of the probe coil, providing a measurable signal on a digital display. Our AS/NZS ISO 9712 certified technicians interpret these impedance changes to pinpoint defects with extreme precision, making ET an invaluable tool for rapid, in-service monitoring of painted lifting assets.

Beyond surface crack detection, Eddy Current Testing is highly versatile, extending to the inspection of non-ferrous tubing (such as heat exchangers in heavy plant), material sorting based on electrical conductivity, and precise coating thickness measurements. For HSE managers and principal contractors looking to fulfill their PCBU WHS obligations while minimizing asset downtime, ET is a superior solution. Because structural paint systems do not need to be stripped and reapplied, the time and cost associated with statutory inspections are drastically reduced. Whether inspecting critical welds on an Elevated Work Platform (EWP) boom or assessing aerospace-grade lifting components, our Eddy Current Testing services deliver rapid, accurate, and fully compliant diagnostic data, adhering strictly to Australian Standards and ensuring the continuous, safe operation of your equipment.