The Research of Models For TKY Tubular Joint Welds In Ultrasonic Phased Array Inspection

In order to solve the problem of locating defects from TKY node structure weld using for marine engineering, the article present a new approach of establishing TKY's mathematical model to replace the traditional method of Graphic analytic method, which uses the computer to carry on the drawing. Firstly three-dimensional mathematical model of the Y-shaped tube node is made, based on what it work out the equation of the cross-sectional on different position of weld by introducing the concept of intersecting angle phi, eventually it establish the two dimensional mathematical model of cross-sectional. In the end of the article, some experimental examples show the effectiveness of the models, which testify that using computer graphics to evaluate ultrasonic pulse-echo is more effective, smaller error, higher working efficiency and reduces the impact of human factors greatly.