A coil carrying alternating current is passed near a conductive part, inducing circulating — or "eddy" — currents in the material's surface. A crack, corrosion pit, or conductivity change disrupts those eddy currents, and the resulting shift in the coil's electrical response reveals the flaw — all without any liquid couplant needed.
Because it requires no couplant and reads out fast, eddy current testing is especially suited to fast, repeatable surface inspection where an ultrasonic tank or squirter setup would add unnecessary time to the cycle.
General-Purpose Eddy Current C-Scan Systems
High-performance, low-cost, fully computerized eddy current scanners built to perform both rectilinear surface scans — the kind used for corrosion mapping — and turntable scans, as used on aero engine parts. The line handles high-volume production applications and includes the WinScan control and acquisition package, providing multi-channel eddy current response acquisition with a full analysis package built in.
Frame configurations range from portable field units to bench-mounted and table-mounted platforms with an elevated scanning bridge. A host of accessories extend the platform further — motorized Z-axis, gimbals, turntables, and rotators, including a dedicated turntable built specifically for aero engine components.
| Axes | Motorized X, Y, Z |
| Frame options | Portable, bench-mounted, and table-mounted configurations |
| Motion control | SDI-1830 MasterEddy |
| Acquisition | WinScan, multi-channel |
| Accessories | Motorized Z, gimbals, turntables, rotators, aero-engine turntable |
| Typical use | Corrosion mapping, aero engine component scanning |
Need fast, repeatable surface inspection?
Ask SDI about the SDI-7100 Series eddy current C-scan systems.