Abstract: Methods and systems for analyzing and processing digital data comprising a plurality of infra-red (IR) video images acquired by a pulse thermography system are used to compute video data from the raw and smoothed video data acquired for the performance of non-destructive evaluation. New video data types computed may include but are not limited to contrast evolution data such as normalized contrast, converted contrast and normalized temperature contrast. Additionally, video data types computed comprise surface temperature, surface temperature rise and temperature simple contrast.

Abstract: Methods and systems for converting an image contrast evolution of an object to a temperature contrast evolution and vice versa are disclosed, including methods for assessing an emissivity of the object; calculating an afterglow heat flux evolution; calculating a measurement region of interest temperature change; calculating a reference region of interest temperature change; calculating a reflection temperature change; calculating the image contrast evolution or the temperature contrast evolution; and converting the image contrast evolution to the temperature contrast evolution or vice versa, respectively.

Abstract: A diffuse reflector is provided which isotropically reflects the infrared and far-infrared regions of the spectrum. The reflector includes a metal plate having one surface that is roughened by an electric discharge machine so as to have an r.m.s. roughness large enough to diffusely reflect far-infrared radiation. The roughening process creates facets having cavities which trap and diffusely reflect normally incident far-infrared radiation. An example of a reflector so produced has an isotropic bidirectional reflectance distribution function approximately equal to 1/.pi. sr.sup.-1 between the wavelengths of 5 .mu.m and 100 .mu.m.

Abstract: A Hall effect device and a method of obtaining a magnetic field map of a magnetic body with the Hall effect device. The device comprises: (1) a substrate, (2) a first layer having a first Hall coefficient deposited over the substrate and (3) a second layer having a second Hall coefficient deposited over the first layer, the first and second layers cooperating to create, in the Hall effect device, a third Hall coefficient different from the first and second Hall coefficients. Creation of the third Hall coefficient by cooperation of the first and second layers allows use of materials for the first and second layers that were previously unavailable for Hall effect devices due to their relatively weak Hall coefficient.

Abstract: A full-color, flat-panel, matrix-addressed, electroluminescent display 10 is achieved using red, green and blue phosphors in two layers separated by layers of insulating material 16, 20, 24 and 30 and layers of row 22 and column 14 and 32 electrodes used to excite the phosphors when voltage is applied. One phosphor layer is all one color 18 while the second phosphor layer is composed of alternating, side-by-side stripes of a second color 26 and a third color 28. At each intersection of the row 22 and column 14 and 32 electrodes, a picture element is formed by the two side-by-side color phosphors 26 and 28 as they are superimposed over the single color 18 layer.