Development of a dynamic radiographic capability using high-speed video

Conference · Sun Jan 01 00:00:00 EST 1984

DOI:https://doi.org/10.1117/12.967964· OSTI ID:6632948

Bryant, Jr, L E

High-speed video equipment can be used to optically image up to 2000 full frames per second or 12,000 partial frames per second. X-ray image intensifiers have historically been used to image radiographic images at 30 frames per second. By combining these two types of equipment, it is possible to perform dynamic x-ray imaging of up to 2,000 full frames per second. The technique has been demonstrated using conventional, industrial x-ray sources such as 150 kV and 300 kV constant potential x-ray generators, 2.5 MeV Van de Graaffs, and linear accelerators. A crude form of this high-speed radiographic imaging has been shown to be possible with a cobalt 60 source. Use of a maximum aperture lens makes best use of the available light output from the image intensifier. The x-ray image intensifier input and output fluors decay rapidly enough to allow the high frame rate imaging. Data are presented on the maximum possible video frame rates versus x-ray penetration of various thicknesses of aluminum and steel. Photographs illustrate typical radiographic setups using the high speed imaging method. Video recordings show several demonstrations of this technique with the played-back x-ray images slowed down up to 100 times as compared to the actual event speed. Typical applications include boiling type action of liquids in metal containers, compressor operation with visualization of crankshaft, connecting rod and piston movement and thermal battery operation. An interesting aspect of this technique combines both the optical and x-ray capabilities to observe an object or event with both external and internal details with one camera in a visual mode and the other camera in an x-ray mode. This allows both kinds of video images to appear side by side in a synchronized presentation.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6632948
• Report Number(s): LA-UR-84-2540; CONF-840887-10; ON: DE84016477
• Resource Relation: Journal Volume: 0491; Conference: 16. international congress on high speed photography and photonics, Strasbourg, France, 27 Aug 1984; Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
X-RAY RADIOGRAPHY
VIDEO TAPES
ALUMINIUM
BLOWERS
ELECTRIC BATTERIES
IMAGE INTENSIFIERS
LENSES
LINEAR ACCELERATORS
STEELS
TURBULENCE
VAN DE GRAAFF ACCELERATORS
X-RAY SOURCES
ACCELERATORS
ALLOYS
ELECTROCHEMICAL CELLS
ELECTROSTATIC ACCELERATORS
ELEMENTS
EQUIPMENT
INDUSTRIAL RADIOGRAPHY
IRON ALLOYS
IRON BASE ALLOYS
METALS
RADIATION SOURCES
X-RAY EQUIPMENT
440300* - Miscellaneous Instruments- (-1989)