Visualization of flaws within heavy section ultrasonic test blocks using high energy computed tomography

Conference · Wed May 01 04:00:00 EDT 1996

OSTI ID:296771

House, M B; Ross, D M; Janucik, F X; Friedman, W D ^[1]; Yancey, R N ^[2]

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1. Lockheed Martin Corp., Schenectady, NY (United States)
2. Advanced Research and Applications Corp., Dayton, OH (United States)

The feasibility of high energy computed tomography (9 MeV) to detect volumetric and planar discontinuities in large pressure vessel mock-up blocks was studied. The data supplied by the manufacturer of the test blocks on the intended flaw geometry were compared to manual, contact ultrasonic test and computed tomography test data. Subsequently, a visualization program was used to construct fully three-dimensional morphological information enabling interactive data analysis on the detected flaws. Density isosurfaces show the relative shape and location of the volumetric defects within the mock-up blocks. Such a technique may be used to qualify personnel or newly developed ultrasonic test methods without the associated high cost of destructive evaluation. Data is presented showing the capability of the volumetric data analysis program to overlay the computed tomography and destructive evaluation (serial metallography) data for a direct, three-dimensional comparison.

• Research Organization: Knolls Atomic Power Lab., Schenectady, NY (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Nuclear Energy, Washington, DC (United States)
• DOE Contract Number: AC12-76SN00052
• OSTI ID: 296771
• Report Number(s): KAPL-P--000042; CONF-9605347--; ON: DE99000440
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
42 ENGINEERING
COMPUTERIZED TOMOGRAPHY
DATA ANALYSIS
DEFECTS
NONDESTRUCTIVE TESTING
PRESSURE VESSELS
ULTRASONIC TESTING