Abstract
In the operation of industrial plant, it is essential that we ensure the piping integrity and safety. A serious problem of pipe is wall thinning because of erosion and corrosion (mechanical process and chemical process). Sometimes, the damage bring about the wholesale destruction of pipes, which will harm human on a large scale. In general, the wall thickness of pipe is measured with the ultrasonic test now. However, we expend much time and effort on the test and there are damages, which aren't measured by the test. In this study, we pay attention the pipe's surface vibration by fluid vibration of tube, and suggest that the measurement vibration analysis for piping integrity. If method of this study is available, it is expected that we will make an examination of pipe in operation of plant, grasp the condition of extensive pipe, and reduce the time of test. This paper has research findings of fundamental study for new method measuring wall thinning (transition of frequency distribution and frequency response). The analysis method is Fast Fourier Transform and Transfer Function by MATLAB.
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