Dong Pyo Hong

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Dept.of Mechnical Design Eng., Chosun Univ., 375 Seosuk-dong, Dong-gu, Gwangju, Korea, yonggary@ieee.org In this study, shearography and infrared thermography were used for measuring the wall thinning defects of the nuclear power plants pipes. It is very important to measure the wall thinning defects inside the pipes, because the wall thinning defects cause(More)
For solutions to point kinetic equations in nuclear dynamics, various analytical methods have been developed. Nevertheless, sometimes complex aspects of problems make it difficult to apply analytical methods to point kinetic equations. In addition, owing to the stiffness and need for small time steps of point kinetic equations, it is hard to obtain accurate(More)
In this paper, the novel approach for the rotating machine as diagnosis method in detecting the faults during its operation was proposed based upon the infrared thermograph technique. As experimental works, by performing the test of operation at several lubrication conditions for the ball bearing applied in the rotating machine which there has been used(More)
In research of photoelasticity, photoelastic fringe patterns are obtained through a circular polariscope with different optical arrangements and they are processed with image processing techniques in a personal computer. Image processing techniques are reviewed and discussed for stress analysis of the photoelastic fringes in this paper. The image processing(More)
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