Automated X-ray inspection

Automated X-ray inspection (AXI) is a technology based on the same principles as automated optical inspection (AOI). It uses X-rays as its source, instead of visible light, to automatically inspect features, which are typically hidden from view.

For the on-chip bus, see Advanced Microcontroller Bus Architecture ยง Advanced eXtensible Interface (AXI).

Automated X-ray inspection is used in a wide range of industries and applications, predominantly with two major goals:

  1. Process optimization, i.e. the results of the inspection are used to optimize following processing steps,
  2. Anomaly detection, i.e. the result of the inspection serve as a criterion to reject a part (for scrap or re-work).

Whilst AOI is mainly associated with electronics manufacturing (due to widespread use in PCB manufacturing), AXI has a much wider range of applications. It ranges from the quality check of alloy wheels to the detection of bone fragments in processed meat. Wherever large numbers of very similar items are produced according to a defined standard, automatic inspection using advanced image processing and pattern recognition software (Computer vision) has become a useful tool to ensure quality and improve yield in processing and manufacturing.

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