Neutron radiography with Kyoto University Research Reactor (2)

Studies for the evaluation of detection limit of defects in composites were carried out by using neutron radiography with Kyoto University Research Reactor (KUR). Nylon wires of diameters from 52 to 390 μm embedded in metals and plastics composite plates were used. It was found that the detection limit was about 390 μm for a composite made of an iron plate of 25-mm thickness and a plastic plate of 6-mm thickness, and was about 290 μm for a composite made of a lead plate of 25-mm thickness and a plastic plate of 6-mm thickness. The detection limit is better for composites of iron and plastic than for those of lead and plastic. (author)