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A New Radiographic Corrosion Inspection Capability.
Final rept. 2 Jul 84-2 Jan 85,
ADVANCED RESEARCH AND APPLICATIONS CORP SUNNYVALE CA
Pagination or Media Count:
A dual-energy radiographic technique is reported which could significantly enhance the corrosion detection and damage assessment capabilities of any radiometric system. Digital radiographs taken at two different effective energies are manipulated in such a way as to greatly improve the conspicuity of detail in the image by reducing the amount of structural noise present. The improved sensitivity offered by the method can be traded for an equivalent detectability at a much lower dose level, an important consideration for on-board or in-situ inspections. In addition, an important consideration when foreign material is present. Results indicate that the effective atomic number of unknown contaminants can be determined to better than 3 absolute error. Keywords Photoelectricity Nondestructive testing Software development Experimental data.
APPROVED FOR PUBLIC RELEASE