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In this paper, a technique to measure the locations and orientations of apertures, and their diameters, on the spout nozzle of an engine is presented and a complex measuring apparatus designed for the purpose is discussed. This consists of an area CCD camera, an image acquisition card, stepper motors, optical and mechanical units and a computer system for data acquisition and control. Results on the...
Orientation relationships between the parent phase and 2H type martensite, and between different variants in a plate group of martensite in the CuAlNi shape memory alloy were determined by electron backscatter diffraction. The result reveals clearly that the basal planes of different correspondence variants of the 2H martensite originate from different {110} P planes of the parent phase, and...
A brief and effective method-arithmetie mean thresholding is suggested for segmenting interference image of complex light interfereometer used in automatic measurement of surface roughness. The roughness profile information extracted from binary image after thresholding and calculated results by sampling enough height deviation data from roughness profile coincide with those charted and measured...
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