X-Ray Computed Tomography

Three-dimensional imaging of materials with sub-micron resolution based on X-ray transmission through the sample


CALENDAR

Xradia MicroXCT-200 X-Ray Computed Tomography

XCT.jpg

Location: MSB 108

The Xradia MicroXCT-200 reconstructs a sample’s 3D internal structure by measuring the X-ray transmission from multiple perspectives. 2D projections of the sample are acquired at discrete angles as the specimen is rotated 180°. These 2D radiographs are reconstructed into a 3D volume using a Filtered Back Projection (FBP) algorithm. The 3D volumes can be quantitatively analyzed using available Avizo software or other programs to provide detailed microstructural measurements and 3D renderings.

 

XCT Technique Summary:

 
  • Non-destructive measurement of the internal 3-D microstructure of solids
  • 3-D spatial resolution from 0.7-1.0 µm
  • Typical acquisition times of 1-10 hours
  • Works best for samples that are cylindrical in shape
  • Compatible with biological, polymer, ceramic, metal and composite samples
  • Contrast in proportional to material density
  • Compatible with in situ mechanical testing, electrochemical and heating/cooling stages
 

XCT Features:

 
  • Air-cooled X-ray source with a range of 20-90 kV voltage and 1-8 W power
  • Detector has a 2048 x 2048 pixel array
  • Maximum sample size 100 mm wide by 150 mm tall
  • Maximum sample weight 1 kg
  • Resolution of up to 0.7 microns, depending on sample size, composition and imaging parameters
  • Sample stage travels 90 mm along X-axis, 50 mm along Y-axis, and 10 mm along Z-axis (parallel to X-ray beam), with 360° rotation
  • X-ray detector travels 120 mm
  • X-ray source travels 85 mm
  • Easily interchangeable filters to optimize contrast
  • Two different magnification settings
  • Clamp-, clip- and vise-style sample holders to accomodate a variety of sample sizes and shapes
  • Ergonomic station for comfort during experimental set-up
  • Access to Avizio software for image reconstruction on a separate data-processing computer
  • Various user manuals in hard-copy and electronic formats

UVA RATES:

 

Xradia Micro-XCT Instrument Usage: $25/hr

Xradia Micro-XCT Operator Costs:  $55/hr

 

EDUCATIONAL, GOVERNMENT & NON-PROFIT INSTITUTIONS RATES:

 

Xradia Micro-XCT Instrument Usage (Operator Costs Included): $100/hr

 

INDUSTRIAL PARTNER RATES:

 

Xradia Micro-XCT Instrument Usage (Operator Costs Included): $250/hr

 

.*Rates are for reference only. See R. White for current instrument costs.