By Helen Zhang, David Jin, X. J. Zhao
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The chemical composition of a synthesizable additive is given in table. 1. 68 At an assessment of chemical composition of the synthesized aluminosilicates it is established that the oxides of silicon, making 55,45%, prevail. The X-ray phase analysis revealed the existence of a crystal phase (22%), presented by thenardite and gibbsite, and also by the amorphous component, presented by units of nanodimensional similar cristobalite crystal grains (78%). The microstructure of the received additive was studied by means of a electron microscope at increase by 20 000 times (fig.
This paper introduces a variety of commonly used composite nondestructive testing technologies [1-6]. Ultrasonic Testing Traditional Ultrasonic Testing (UT). UT is the most widely used and effective detection method of all kinds of nondestructive testing technologies. It is based on the differences of ultrasonic reflection, attenuation and resonance between the defect area and the normal area in the materials to determine the defect size and location, then according to the reflection characteristics of the materials and the practical experience to judge the defect types.
Improved adaptive genetic algorithm maintains the population’s variety meantime it ensures the convergence of genetic algorithm. 001 Target feature extraction After target was segmentated from image, the measure and analysis of geometry and shape feature toward target location is further conducted. On this basis, object is recognized and also can be classified or judged to see if it conforms to standard to achieve quality control. After the object region is confirmed then if can be measured immediately including geometrical feature region on area, perimeter, shape feature round character, rectangle character, the ratio of length and width, eccentricity and so on.