Anton du Plessis
Author's posts
Jul 22
Wristwatch
A wristwatch is a good everyday example of what can be done with this technology, with good scan quality and enough analysis time. A normal digital X-ray image movie shows the capability of live X-ray imaging, where you can see the watch tick: 04072014_02 Watch X-ray 2 7FPS~4 All the X-ray images in a scan …
FollowJul 22
Consumer product testing: cookies
Non-destructive testing of consumer products is not new, with many laws protecting consumers. However, producers and suppliers do not test products unless explicity legally required. We offer simple analysis and testing for any users. In this example, we illustrate how a packet of cookies can be quickly inspected by CT scanning and X-ray imaging, with …
Jun 30
Titanium aerospace investment casting
In this work, a Titanium aerospace investment casting was analyzed by X-ray micro Computed Tomography (X-ray microCT). The geometry cast and evaluated was supplied by Boeing, and was supplied to CSIR as a design file. This geometry is used to benchmark titanium casting processes and suppliers against aerospace standards. Key features of interest are internal …
Jun 19
Beer Mug Metrology
A beer mug was acquired from Germany during a training visit, and it was decided to use this as an example for dimensional measurement or metrology using X-ray CT. The simple process employs best-fit planes and cylinders in this case to determine the height and diameter of the mug, though any distances or angles could …
Jun 19
Bullet
This simple example demonstrates two things: 1. It is possible to penetrate and successfully scan a small dense object such as a bullet (containing lead) 2. Accurate dimensional measurements are possible using metrology tools, allowing for example forensic analysis of such samples, ie. determining the caliber or make of the bullet MOVIE: Analysis performed in …
May 19
Nondestructive analysis of solder joints
Here we show solder joints and wire connections inside a large product, imaged nondestructively. X-ray CT is cost effective for testing all such solder connections even in large parts.
May 19
Rock porosity
This example showcases the capability for X-ray microscopy. In some small samples, it is very difficult to physically cut and image the sample using SEM or optical microscopy, especially when looking for porosity. In this example a rock fragment is imaged, showing very high resolution detail such as porosity and inclusions. This was done at …
May 19
Abalone shell
This example is an abalone shell with coral on top of the shell. Some of the images show the internal connected pathways in the coral.
May 19
Fibre orientation analysis
Metal fibres (wires) and mesh are often used to reinforce concrete structures, but the angles of these fibres and their separation can affect the strength of the structure, hence full 3D analysis of the fibre orientation can be very useful in understanding material performance. This example shows colour coding for 3D angle orientation, ie. the …
May 11
Skull
A human skull was CT scanned, with the aim to generate a CAD file with extremely high detail. The CAD file can be used to generate a digital facial reconstruction. More about this will be included in later posts, but here we provide nice images and movies of the skull. CAD file available on request. …