Backscatter Radiography
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Radiography by selective detection (RSD) allows for preferential detection of backscatter components that are responsible for improving image contrast. This is accomplished through a set of specially designed detectors and both fixed and movable detector collimators. An example of RSD is lateral migration radiography (LMR). The LMR approach is based on image contrast generated by the lateral migration of scattered x-rays in directions perpendicular to the radiation illumination beam. This technique has been used successfully to detect buried landmines and flaws and defects in aluminum, plastics, honeycomb laminates, reinforced carbon composites, steel, and titanium. LMR has been used to detect variations in composition, including corrosion, and to detect flaws as small as 50 microns in height, 1 mm in width and 1 cm long in samples of actual aircraft components.

Single-sided image
Easy to read and interpret
Industrial proven technology
Patented radiography by
Selective detection
Improved subsurface resolution
Improved subsurface contrast
Depth information
Land mine detection
Flaw detection
Cracks and voids
Delaminations
Corrosion
Deposits
Adhesive thickness
Materials
Boric acid residue
Plastics
Reinforced carbon-carbon composites
Space shuttle external tank foam
Honeycomb structures (Aircraft wings)
Laminates
Aluminum & titanium alloy
FOD inspections
Security applications
