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Nesch, LLC
9800 Connecticut Drive
Crownt Point, IN 46307

Phone: (219) 644-3505

e-mail: contactus@neschllc.com
 

Materials Imaging

click on the images for larger pictures

The ability to non-destructively vizualize interfaces between materials of similar chemical composition is difficult using conventional imaging methods. The DEXI instrument provides images that clearly show these important physical boundaries, even for very challenging low Z materials.

Plastic (low Z materials)
Conventional
Extinction
Refraction
Scattering
The above images of a drilled ABS plastic block provide another example of the DEXI instrument's ability to image interfaces. The plastic piece has five holes drilled in to it – two each from the top and bottom (opposite corners) directed toward the center, and a through hole along the centerline. These holes are not visible in the conventional image; however, each hole can clearly be seen in the extinction, refraction, and scattering images.
 
Sapphire Spheres
Conventional
Extinction
Refraction
Scattering

These images show sapphire spheres held in a plastic, tubular container filled with water. "Conventionally" the walls of the plastic container are not distinguishable due to its similar x-ray absorptivity to water; however, the extinction, refraction, and scattering images show this interface very clearly.

Additional interfaces can only be observed in the unique DEXI images.  The fact the container uses tube-within-a-tube construction and the presence of a large bubble surrounding the third sphere is only revealed in the  extinction, refraction, and scattering images.

 

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