Many times per week we’re asked, “Is X-ray or CT the correct inspection method for my project?” The answer, of course, isn’t always straightforward. This article will highlight some strengths and weaknesses of each method.

The subject for inspection is a carbon fiber board with inclusions throughout. The piece is very large at 26 in. x 26 in. Using X-ray to inspect it is fine, but with computed tomography (CT) it could prove difficult.

Fact-finding with focus scans

Because this project was intended for R&D and technique development, we were able to cut a section out of the sheet. This probably should have been done by professionals; we ended up running through five blades cutting through the armor-grade material.

The purpose of the small section is to acquire the best possible data to be used as a gauge for the more complex development. If we can understand what the material looks like at higher resolution, it will help inform our higher-energy, lower-resolution technique development.

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