As aircraft age corrosion forms upon unobservable surfaces particularly at the junction of the sheet aluminum and the steel rivets used to attach the sheets to the airframe degrading the aircraft s airworthiness. Previous research developed a noninvasive technique fo... Lees meer.

Energies the scattered gamma ray spectra are significantly influenced by the momentum distribution of the electrons in the target a phenomenon known as Doppler broadening. This broadening is energy-variant and the shape is a function of scattering material. A determin... Lees meer.