Engineering topics
Publications and source records attributed to Feinstein, L..
Introduction of sinusoidal signal across welded structure to determine reliability of integrated circuit connections is discussed. In-phase frequencies and quadrature frequency functions are used to evaluate weld reliability. Schematic diagram of test equipment and components is provided.
Surface defect detection by reflected microwave radiation pattern
Nondestructive noncontacting microwave depth measurement of thin slits and cracks in metal surfaces
Metal surface cracks detection by microwave techniques resulting in noncontacting, nonfocusing and high sensitivity self illuminating system
Microwave surface-crack detection system examines metallic surfaces with a noncontacting probe. The change in the microwave signal reflected from the surface under investigation is an indication of the existence of surface flaws. This technique can detect flaws and scratches as small as 100 microinches.
Microwave technology application to surface crack detection and continuous observation in metals