This paper proposes the method of estimating vibration-induced stress for the complex small-bore piping vith general piping. The method consists of the vibration m easurements and the finite element method FEM). The stresses are estimated using the FEM model optimized by the values of vibration measurements. Vibration test is performed to validate the method. As the results, the estimated stress using the second proposal method became to be from 0.5 to 2 times to the measured one. Sinc e the vibration-indu...
英字タイトル:
Method of Estimating Vibration-Induced Stress of Small-Bore Piping Using Portable Vibrometer

In the nuclear power plant, where many small-bore piping connected to vibrational sources like pumps, it is important to evaluate vibrational stress to keep the plant operating safely. The purpose o f this study is to develop a method to measure vibrational stress efficiently by using multiple contactless displacement sensors. The applicability of the method is verified by vibration tests with a pipe. In the vibration tests, the stress calculated by the proposed method was compared with the stress measured...
英字タイトル:
Development of Method to Measure Vibrational Stress of Small-Bore Piping with Multiple Contactless Displacement Sensors