RF REFLECTION FOR INSPECTING COMPOSITE MATERIALS

摘要

A material (30) formed of a plurality of non-insulating particles (40), wherein the material is substantially equally spaced in the matrix and the material is a matrix having coherent electrical periodicity in at least one dimension; (10) arranged to receive a source RF signal and a returned RF signal, wherein the source RF signal is reflected by non-insulating particles to generate an RF signal that is returned. A change in at least one of the non-insulated particles causes an RF signal that has returned to the change, so that a change in the material's properties can be determined from the returned RF signal.