We make surface cracks visible.

Non-destructive testing for surface cracks is particularly required in heavily used areas. This includes surface crack tests, amongst others on tubeworks, boilers, reactors and turbine blades in the secondary and primary area of nuclear power plants, flue gas desulfurising plants and all other industrial plants.

In this difficult area, DELTA TEST can reliably detect even the smallest defects in inaccessible test locations, and document these conclusively. In addition to using state-of-the-art eddy current technology, we use special, high-resolution sensor systems. You can trust DELTA TEST when it comes to safe surfaces.

For this purpose, we use wired crawlers for example that can be precisely controlled and positioned and be used with very different tools and probes. You can thus be sure that we will find a solution for each of your components to be tested optimally.

Advantages of ECA

The Eddy Current Array technique uses a multiplexer (MUX) to excite the single coil elements in a predefined scheme to leverage the probe’s width. Multiplexing also minimizes the interference between coils in close proximity (mutual inductance) and maximizes the resolution of the probe. Another advantage is the fact that each coil element is able both to transmit and/or receive eddy current signals (transmit/receive circuit). By this means different circuit modes can be realized which enables the technique to detect cracks or corrosion independently of its orientation in a single pass. The data-acquisition is linked to position-encoders. Thus high inspection reproducibility will be archived whereas the risk of untested areas will be minimized at the same time. An expressive full coverage 2D or 3D C-Scan report of all tested areas is another advantage of the ECA technique.

  • High inspection speed, rapid scanning
  • High probe coverage, high test reliability
  • Independent for defect orientation through intelligent multiplexing Probes can be adapted to complex geometries
  • Inspection without physical movement possible
  • Different inspections in one pass
  • Expressive 2D and 3D C-Scans for full coverage reports
  • High reproducibility
  • Encoder-based data acquisition