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INSPECTION OF THICK POLYETHYLENE SECTIONS BY RADIOGRAPHY AND FLUOROSCOPY,
PICATINNY ARSENAL DOVER N J FELTMAN RESEARCH LABS
A 12 in. x 12 in. x 1 12 in. penetrameter was made from high-density polyethylene containing less than 10 amorphous boron. Fourteen other blocks of the same dimensions and material were fabricated these blocks were void-free. The total thickness of the test specimen was 22 12 in. including the penetrameter. A series of tests was run to determine the detectability of various size voids through different thicknesses of material. Test results showed that, using a cobalt-60 source, voids 12 in. long x 18 in. deep were detectable through the entire 22 12 in. of borated polyethylene. In an attempt to use a similar technique as a rapid scanning process, x-ray equipment 150 kv was teamed with image intensification on a fluoroscopic screen. Author