LARGE SAMPLE X-RAY UNIT

RSUC

Diffraction User Center
Thermophysical Properties User Center
Diff. and Therm. Prop. Group
High Temperature Materials Laboratory
Metals and Ceramics Division
Oak Ridge National Laboratory


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The rugged open area of the large sample x-ray unit allows the study of large specimens over a wide tilt and high Bragg angle range.  This unit is examining a bearing race.
 
 
 
 
 
 
 

The TEC Model 1630 stress analyzer is designed to permit mapping of the residual stress state across the surface of large specimens, metals, or ceramics.  This instrument permits measurement of biaxial or triaxial residual strains in ceramics and alloys.   Strain tensors are subsequently converted to stress tensors utilizing the elastic constants of the phase.  The RSUC facilities also enable determination of diffraction elastic constants and to directly measure, on a phase by phase basis, the response of materials to applied loads.

Features:

  • Interchangeable, 100 W X-Ray Tubes (Cu, Cr, Co)
  • Divergent beam optics
  • 2-theta range (from 128 to 160 degrees)
  • Large specimens accepted
  • Sample Z translation
  • Position-sensitive detector for rapid data collection
  • Highly automated, flexible data-collection options include omega tilts (-45<Y<+60)
  • Software includes parabollic fitting of peak position for biaxial and triaxial stress analysis
  • Retained Austenite Analysis
  • Open sample area and semi-portability allows for load cell work for determination of diffraction elastic constants and furnaces for elevated temperature measurements

Return to the X-ray Residual Stress Instrument List


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Diffraction UC | Residual Stress UC | Thermophysical Properties UC
Diffraction & Thermophysical Prop. Group | High Temperature Materials Laboratory
Metals & Ceramics Division | Oak Ridge National Laboratory

Acknowledgments
URL: http://www.html.ornl.gov/rsuc/sxray.html