Non-Destructive Testing

Tough, light and reliable materials are the key for many of developments. Identification of defects, impurities or cracks in these materials is therefore important. X-ray imaging is a tool used for these purposes for a long time. However, the standard imaging technology was tuned mostly for metals. Therefore, the traditional X-ray imaging systems fail in case of modern light materials such as composites. The novel materials therefore call for novel inspection technologies and photon counting detectors are ideal for this purpose.

Advacam brings to the market a new range of X-ray imaging cameras that are optimized for composite material testing. Similarly to the applications in biology, also here the non-destructive testing (NDT) takes advantage of the sensitivity to low energies. Therefore, light materials such as carbon fibres, epoxies, etc. are easily revealed in a great detail. Hence, even challenging defects such as deep laminate wrinkles, kissing-bonds, delaminations, porosity, foreign objects and micro-cracks in the soft materials can be detected with spatial resolution of 55 µm or better.

Visualization of cracks at micrometric level is rather easy with this technology. Even a hard to detect defects such as delaminations and kissing bonds can be revealed using our detectors in combination with phase-contrast imaging method.

In addition to the detection of these defects, the cameras allow identification of materials in the X-ray images by measuring changes of the X-ray wavelength spectrum. Combining the sensitivity to low X-ray energy photons with the very high dynamic range of photon counting detectors creates a powerful tool for NDT in airspace industry and elsewhere.

Comparison of a regular X-ray image and “colour” X-ray image where the colours correspond to different X-ray energy channels. Different materials in the electronics of a car key are easily distinguished