Neutron radiography of aircraft composite flight control surfaces

摘要

Neutron radiography is considered a complementary nondestructive testing technique to conventional radiography. In X- and gamma radiography, attenuation increases uniformly with mass number and density, whereas, with neutrons, attenuation is random with a tendency for certain light elements such as hydrogen to absorb and scatter neutrons rather well. Thus, neutron radiography is especially well suited to detecting corrosion and moisture entrapment, especially in aircraft structures.