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            CIVA-UT Model Validation for Rail Flaw Inspection Simulation
      

      
  Document Series
              Research Results


      
  Author
          Federal Railroad Administration


      
Report Number
              RR 22-28

  Office
              RDI-21


      Subject
                    Track


      
  Keywords
              Nondestructive evaluation (NDE), ultrasonic testing (UT), CIVA, Modeling, Validation


      

      
      
              
                  
      
              
  Document
              CIVA UT Model Validation Final.pdf (508.02 KB)

      
              In 2022, the Federal Railroad Administration (FRA) contracted with Transportation Technology Center, Inc. (TTCI) to conduct validation studies of CIVA software’s rail models for hand-held, angled beam, shear vertical wave (SW) inspections. The research team generated side-drilled holes (SDHs) at different depths in a carbon steel block and in a rail sample to establish a ground truth. They then conducted laboratory-based ultrasonic testing (UT) scans and theoretical simulation studies for both of these test samples. The scans and subsequent simulation demonstrated that, for the most part, the modeling results were in good agreement with the experimental results for the 70 and 45 degree SW inspections. However, the modeling results did not match the experimental results for the 45 degree SW inspections in a steel block with SDHs at depths from 60 mm to 80 mm.
      
            
      
      
              Last updated: Thursday, October 13, 2022 U.S. DEPARTMENT OF TRANSPORTATION

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